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Exercise and Ageing

Muscle mass, pain and the immune system

Sarcopenia

by Martin Krause: uploaded ~2001, updated Dec 2004, April 2005, June 2012, November 2013

- have you ever looked upon muscle as an important source of protein for the immune system?

- have you wondered whether exercise could enhance the immune response?

- have you considered the role of pain and inflammation during exercise and the immune response?

 

Body Mass Index

- do you commonly use strength training for the prevention of metabolic syndrome?

Index

Abstract

Introduction

T lymphocyte immune responses

Muscle as a source of protein for immune function

Heat shock protein (HSP)

Muscle glutamine and inflammatory-immune response

Implications for exercise training and immune function

Conclusion

Resistance-exercise-hormone-repetitions

Exericise and age related decline in vasodilation

Exercise and Pain

Pain and the central sympathetic nervous system

 

Abstract

As we age, our adaptive immune system develope's specific responses as a result of antigen exposure. The ability to develop these responses is in part dependent upon protein-telomere shortening of eukaryotic carrier sites. These carrier sites represent protein endings which are splice off through mRNA. Subsequently, as we age, the protein sequences shorten. There is a finite limit to this shortening-splicing process. Therefore, the greater the protein mass in our youth, the greater the ability to respond to novel antigen exposure throughout life. Unfortunately, the aging process (beyond the 3rd decade) also reduces protein quality and quantity in the greatest store of protein in our body i.e. muscle. Furthermore, the innate immune system is also compromised by reduced muscle mass as the amount of natural killer (NK) cells are directly proportional to muscle mass in the aged population. This is particularly the case in people who commit to muscle atrophy through sedentary lifestyles, as well as those who deal poorly with psychogenic stressors which release catabolic hormones. Therefore the importance of regular exercise cannot be underestimated. A variety of exercise including cardiovascular, progressive resistance training and mind-body awareness (e.g. Yoga, Chi Gong, etc) is recommended.

There is direct relationship with muscle mass and immune function. The better your muscle mass the better the reservoir of proteins for the immune system to use at times of need. However, when in vigorous training and/or over-training the protein is being used for muscle recuperation and repair and therefore little is left over for the immune system. Moreover, animal experiments have demonstrated impaired proliferative responses of mononuclear or spleen cells to mitogens (Sacerdote P et al 1994 Brain Behav Immun, 8, 251-260) and IgG antibody responses to novel antigen exposure (Laudenslager ML et al 1988 Brain Behav Immun, 2, 92-101 cited in Pain Clinical Updates XIII, No1) in the presence of intermittent pain. Plausibly, immune suppression is more evident when you are doing potentially muscle damaging stuff such as downhill running, plyometrics , etc. I find it beneficial before doing such exercise to do an eccentric stretching regime as well as afterwards doing concentric X's such as bike riding. Additionally, mind-body awareness and relaxation through yoga can be particularly useful. These factors may then aid in reducing pain and inflammation associated with eccentric exercise. Also keep in mind that if you've hit the flu season, plenty of freshly squeezed oranges are great and better than the bottled stuff. Drink it within minutes of squeezing, otherwise the enzymes (due to lack of added preservatives and exposure to oxygen) start to break down the goodness. Naturally, all other essential dietary vitamins and minerals are also important. Emphasis has been placed on the omega 3 and 6 FFA's such as fish oil and evening primrose oil (EPO), anti-oxidants such as Vit E (slightly controversial recently), magnesium and Vitamin B's. However, there are a plethora of other minerals which help catalyze metabolic reactions (e.g. Zinc, Molybdenum, etc). Therefore, athletes should seek advice from a qualified sports dietician.

Progressive resistance training (PRT) can enhance muscle function by creating hypertrophy of muscle tissue. 40-60 minutes of PRT, 3 times per week, using a gym based weights programme can enhance your ability to fight infection by increasing the protein reservoir residing in your muscle mass. Ideally, 6-8 exercises are chosen which incorporate the largest muscle groups e.g. quadriceps, calfs, gluteals, pectorals, deltoids and trapezius. Since cachexia is a cascade of cytokine-immune responses, then eccentric exercises should also be chosen, as this may 'fine tune' the regulation of the cytokinine-immune response from the microtrauma induced by exercise. Additionally, such exercises can provide better functional stability and balance for ADL. Concentric exercise such as cycling can enhance muscle bulk. Ergogenic aids such as protein-carbohydrate supplementation, as well as creatine phosphate - HMB preparations taken during and/or within 20 minutes after cessation of exercise aids the restorative-regenerative training effect. Creatine phosphate is also thought to improve insulin sensitivity. Similarly, moderate exercise every 72 hours is thought to reduce the susceptibility to metabolic syndrome (i.e. hypertension, hyper-cholesterol, hyper-lipidemia, artherosclerosis, cardiovascular disease, & insulin resistant diabetes) . Since magnesium acts as an antithesis to calcium, it's supplementation may also aid in the prevention of injury, by improving the rate of muscle relaxation thereby reducing the chance of stiffening up and/or cramping during exercise as well enhancing the rate of recovery.

Sarcopenia-contributing-fac

Sarcopenia is characterized by the reduction in muscle mass and may contribute to immunosenescence, as it is thought that muscle provides an important reservoir of heat shock proteins (HSP) and glutamine as well as act as a site for the action of insulin. HSPs are the cellular link, which activate T lymphocyte proliferation. Exercise can activate HSPs and may provide the 'danger signal' for T lymphocyte re-activation after a period of quiescence. Muscle glutamine appears to be important for inter-organ transport as well being a precursor for anti-oxidant activity. Dose specific exercise is thought to improve immune function through an improved ratio of TNF-a: IL-6, which may promote the anabolic effects of IGF-1 and insulin thereby possibly improving muscle mass, leading to enhanced mechanical loading tolerance. Additionally, older people with preserved muscle mass have the highest number of NK cells. The weight of evidence suggests that the preservation of muscle mass and/or reversal of sarcopenia through exercise could be a useful anabolic method to provide a protein reservoir for later use when the older person is exposed to infection, inflammation and/or severe trauma. Click on diagram for PDF file

Introduction

Sarcopenia is characterized by reduced muscle mass [1]. This is significant as skeletal muscle contains 50-75% of all proteins in the human body and represents a store of energy and nitrogen which becomes a vital supply of fuel for the immune system, as well as a substrate for wound healing during malnutrition, injury and disease [2]. Loss of muscle mass may result in immunosenescence, which is characterized by impaired cellular immune function concomitant with increased inflammatory activity [3]. Little is known about the effects of exercise on the senescent immune system [3]. Moreover, exercise has been suggested as a prototype for studying the effects of stress factors on the cellular immune system, because several other physical stressors, such as burns, surgery, acute myocardial infarction and hyperthermia induce similar immune responses [3].

Muscle accounts for 90% of the cross sectional area in active young men, but only 30% of that area in frail older women [4]. The prevalence of clinically significant sarcopenia is estimated to range from 8.8% in 'young old' women to 17.5% in 'old old' men [1]. This review will entertain the notion that the loss of muscle mass due to sarcopenia attenuates the inflammatory-immune response due to the lack of protein stores (glutamine [5], heat shock protein [HSP] [6]). Cytokines such as Interleukin-6 (IL-6) could enhance the immune response through inhibition of Tumor Necrosis Factor ? (TNF-aplha) production and insulin resistance [7]. TNF-alpha is considered to enhance protein degradation through the activation of HSP [8], whereas Insulin [9, 10] and Insulin like Growth Factor (IGF-1) [11] are thought to enhance protein synthesis. Additionally, it will be hypothesized that dose specific exercise training can ameliorate some of the effects of sarcopenia as well as enhance immune function by balancing protein synthesis with proteolysis.

T lymphocyte immune responses

Cytokines are a group of low molecular weight regulatory proteins secreted by white blood cells and a variety of other cells which generally function as intercellular messenger molecules [12]. Proliferation of T lymphocytes is essential for the first step in an adaptive immune response [3]. Essentially there are 2 types of immune cells, the 'memory cells' and 'virgin cells'. With age, the percentage of memory cells increases with a corresponding decrease in virgin cells [3]. Consequently, a reduction in naïve cell responses, and a resulting shift to memory cell proliferative response has been shown in the older person [13]. Fortunately, with advancing age a progressive increase in natural killer (NK) cell number appears to compensate for a decreased number and function of T lymphocytes [14]. More importantly, these findings suggest that cells from older individuals do not suffer from a quantitative decline in cytokine production on a per cell basis [13]. Indeed, centenarians and nonagenarians who presented with the highest number of NK cells and best preserved cytolytic function, also had preserved integrity of muscle mass [14]. Therefore, this suggests that the maintenance of muscle cell mass could preserve the immune response to environmental stressors.

Muscle as a source of protein for immune function

Since muscle represents approximately 40% of body weight, it is thought to be an important reservoir of proteins [8], which may be called upon by the immune system in response to injury [10]. Even a 10% loss in lean body mass (LBM) corresponds with impaired immune function [15] and a loss of approximately 30% of the body proteins can result in death [2]. During severe trauma, such as burns, the need for essential amino acids drives the catabolic loss of protein from skeletal muscle, which can be as high as 1% per day of illness [16]. Accelerated muscle proteolysis is the primary cause of this loss of lean body mass characteristic of many diseases [17]. Some peptides generated by the breakdown of cell proteins are transported to the cell surface where they are presented to cytotoxic lymphocytes, which destroy cells presenting foreign (eg viral) peptides [17]. This may partially explain why successful aging has been associated with the preservation of muscle mass [14] as this would endow these individuals to draw on their store of protein for inflammatory-immune responses.

Increased cytokine activity has been associated with aging and muscle weakness [18], possibly resulting in inactivity. This age associated progressive dysregulation of immune response [19], is seen in older women with high IL-6 serum levels who have a higher risk of developing physical disability and experience steeper declines in walking ability than those with lower levels [18]. However, the statistical interaction of IL-6 concentration with disability was non-linear and the progression of disability and IL-6 concentration over time was not investigated [18]. Therefore, it is difficult to conclude whether elevated levels of IL-6 are the cause or the effect of skeletal muscle weakness, as the progressive withdrawal of a number of anabolic stimuli, also causes skeletal muscle weakness [18]. Furthermore, high levels of TNF-? and IL-6 have been shown to be associated with classical risk factors such as smoking, physical inactivity and body mass index (BMI) [20]. It is difficult to conclude whether the high levels of cytokines lead to inactivity or whether they are the result of reduced skeletal muscle loading capacity from inactivity. However a cycle of inactivity and chronic inflammatory-immune response is plausible.

Heat shock protein (HSP)

Numerous attempts to link exercise to meaningful alterations in immune function have been largely unconvincing [21]. It has been argued that it is local as opposed to the global immune system activation by HSPs, which is at the core of immune effects of exercise [21]. It is thought that HSPs on a cells surface activate T lymphocyte proliferation when accompanied by a co-stimulatory 'danger signal' [21]. These T lymphocytes can switch between the active and quiescent memory states, to be later re-activated in the presence of an antigen and co-stimulatory 'danger signal' [21]. Decreases in HSP72, a heat shock protein specifically related to skeletal muscle [22], is considered to promote apoptosis [23] possibly due to the lack of this secondary 'danger signal' [21]. Not surprisingly, apoptosis has been linked with sarcopenia [24]. HSP are involved in protein folding and sorting, in the assembly of protein complexes as well as binding of denatured proteins and are primarily induced in response to stress [6]. Impaired recovery from acute complications and the reduced renewal of damaged and toxic proteins are potential undesired consequences of low-protein turnover [25]. Indeed, critically ill patients have been shown to have low protein synthesis in skeletal muscle correlating with metabolic status and clinical indices of the severity of the disease [26]. Conversely, specific adaptation in muscle associated with enhanced proteolysis can occur [17], whereby HSPs provide a link between immune response to infection and autoimmunity during fever [27]. In fact older people have been shown to have a reduced incidence of fever in response to injury [28]. Although, exercise induced HSP activity has been described [6, 22] it is uncertain what level of exercise can provide the 'danger signal' required to enhance immune function [21].

Exercise may provide a hormonal stimulus to regulate HSP proteolysis. Recently, rodent investigations have demonstrated that Insulin-Like Growth Factor 1 (IGF-1) inhibits both lysosomal and ubiqitin-proteasome dependent stress protein breakdown in skeletal muscle [11] thus suggesting a hormonal regulating mechanism. Increased IGF-1 concentrations have been demonstrated near the Z-bands in the elderly after resistance training regime [29]. In particular, eccentric exercises have been associated with damage to these Z-bands [30]. Therefore, IGF-1 production in muscle may be responsible for the regulation of protein synthesis after HSP induced proteolysis as a result of exercise induced trauma.

Muscle glutamine and inflammatory-immune response

Skeletal muscle may represent an important source of anti-oxidants. Alterations of respiration in mitochondria of muscle cells has been associated with aging and sarcopenia [10, 31-34]. Interestingly, the muscle protein glutamine is a substrate for glutathione, which acts as an endogenous scavenger with an ability to counteract oxidative injury from oxygen free radicals [16]. This may be particularly important, as the level of oxidative stress imposed on the aging muscle is influenced by two fundamental biological processes: the increased generation of reactive oxygen species (ROS) and age-associated changes in antioxidant defense [33, 35]. Therefore, since glutamine accounts for nearly two thirds of the free intracellular amino acid pool and is abundant in skeletal muscle [16] it is likely to be an important source of anti-oxidants.

It is thought that TNF may mediate protein degradation in cachexia through a ubiquitin-proteasome pathway [8]. This skeletal muscle proteolysis seen in response to severe injury has been speculated to be for the provision of precursors for glutamine synthesis [16]. Glutamine is also thought to be a significant inter-organ nitrogen and carbon transporter as well as being important in glycogen metabolism and therefore can presumably affect mitochondrial oxidative responses [16]. Additionally, in the fasting state, an increase in glucocorticoids and reduction in insulin results in muscle proteolysis [17] presumably through an inter-organ mechanism. During acidosis, some amino acids from muscle protein are converted to glutamine, which is used by the kidneys in acid excretion and energy metabolism [17] (figure 1). Therefore, muscle may represent an important anti-oxidative organ during an inflammatory-immune response. Hence, in the presence of sarcopenia, reduced ability to counteract damage by oxidative radicals may be expected due to reduced glutamine stores.

Implications for exercise training and immune function

Investigators have recently demonstrated that muscle contractions induce the production and release of IL-6 but not TNF-alpha into the circulation [7]. Contrary to the conclusions of Ferrucci et al (2002) [18], other authors suggested that muscle-derived IL-6 contributes to mediate the beneficial metabolic effects of exercise and may inhibit TNF-alpha production and insulin resistance [7]. Administration of insulin has been shown to promote protein synthesis [9]. Furthermore, resistance exercise training has been shown to attenuate the catabolic effect of TNF by suppressing skeletal muscle TNF-alpha expression [36]. However, a 12 week high intensity progressive resistance training program did not affect immune function in healthy older people or subjects with systemic inflammation [37]. Yet, eccentric exercise is associated with an increase in pro-inflammatory cytokines [3, 30]; whereas concentric exercise has been associated with inflammation from oxidative stress [32] and hydrogen ion accumulation due to hypoperfusion [5]. Furthermore, a recent review concluded that older people have a preserved ability to recruit T lymphocytes and NK cells in response to exercise [3]. However, the cells recruited had a replicative history suggesting they were memory cells. Additionally, a lack of investigations into circulating levels of pro-inflammatory cytokines during eccentric exercise in older versus young populations was lamented by these authors [3]. Nevertheless, it would appear that resistance training could be beneficial for IL-6 production as well as TNF-alpha suppression post exercise.

Although investigators have demonstrated enhanced muscle size with resistance training in older people [38], there is little evidence to suggest that this change in size is sufficient to improve immune function [3, 39]. Yet, resistance training has been shown to significantly increase lean body mass and strength in HIV associated muscle wasting [40], therefore indicating a role for exercise in the presence of protease inhibitors and retroviral activity. Additionally, improved lean body mass and reduced fat has been shown to enhance IGF-1 levels during endurance training [41]. Consensus indicates that 'moderate exercise' may enhance immune function and may reduce the incidence of infection while long term exhaustive exercise results in immuno-suppression and an increased susceptibility to infections [12, 42-45]. This is consistent with Ji [33] who suggest that the major benefit of non-exhaustive exercise is to induce a mild oxidative stress that stimulates the expression of antioxidant enzymes, as well as the induction of IGF-1 [11] seen in resistance training [29,46]. Additionally, resistance training accompanied by nutritional supplementation has been shown to result in significant muscle hypertrophy [47]. Biomechanical principles dictate that for the same force, the strain in a skeletal muscle is reduced proportional to the skeletal muscle's cross sectional area [48]. Therefore, if contractile skeletal muscle mass is maintained or enhanced, then it is plausible that a greater spectrum of 'moderate exercise' can be entertained.

Nitrogen imbalance

Highly conditioned elderly humans seem to have a better preserved immune system, although it is not possible to conclude if this is linked to training or other lifestyle-related factors [3]. Specifically, a bi-directional neuro-immune system has been implicated for exercise induced modulation of immune function through the autonomic nervous system [49]. Importantly, the effect of exercise on immune function requires future investigation using dose specific criteria [39, 50] as over-training is characterized by reduced catecholamine levels, decreases in neutrophil function, serum and salivary immunoglobulin concentrations and NK cell numbers and possibly cytotoxic activity in peripheral blood, at least in younger individuals [51]. In particular, the 2-4 hours post exercise have been shown to demonstrate inflammation with concomitant suppression of immune function, especially after high intensity, eccentric exercise in young populations [5, 12]. If these findings can be extrapolated to older people then the periodization of training and careful selection of the type, volume, frequency, duration and intensity of exercise would appear to be important to gain the maximum anabolic and minimum catabolic effect. Presumably, this anabolic effect would reduce the prevalence of sarcopenia through the prevention or reversal of muscle mass loss thereby concomitantly ameliorating immunosenescence.

Conclusion

Sarcopenia is characterized by the reduction in muscle mass and may contribute to immunosenescence as muscle is thought to provide an important reservoir of heat shock proteins and glutamine as well as to represent a site for the action of insulin. HSPs are the cellular link, which activate T lymphocyte proliferation. Exercise can activate HSPs and may provide the 'danger signal' for T lymphocyte re-activation after a period of quiescence. Muscle glutamine appears to be important for inter-organ transport as well being a precursor for anti-oxidant activity. Gathering evidence suggests that dose specific exercise could improve immune function through an improved ratio of TNF-alpha: IL-6, which promotes the anabolic effects of IGF-1 and insulin thereby improving muscle mass, which can lead to enhanced mechanical loading tolerance. Additionally, older people with preserved muscle mass have the highest number of NK cells. Taken together the evidence suggests that the preservation of muscle mass and/or reversal of sarcopenia through exercise could improve the protein reservoir for a person to draw upon when they are exposed to infection, inflammation and/or severe trauma.

Exercise and Age-Related Decline in Arterial Vasodilation

Ageing has been associated with reduced arterial vasodilation and hypertension. Elevation of free oxygen radicals are thought to inactivate Nitrous Oxide (NO). Using a severe hand-gripping model, Shoemaker et al (Am J Physiol, 1997; 273, H23488-95) were able to demonstrate 7% vasodilation in young subjects versus only 3% brachial vasodilation in older individuals. Anecdotal evidence supporting the use of oral antioxidant supplementation comes from Japanese, Scandinavian and Italian populations where a high incidence of centenarians has been associated with diet. However, the use of oral antioxidants alone, in the abscence of exercise, has not been shown to reduce the risk of cardiovascular disease. Paradoxically, administration of high levels of Vitamin C after exercise seem to reduce the vasodilatory effect of exercise, suggesting some positive 'down-stream'  effects of oxygen free radicals on cardiovascular health (Wry et al 2011, Exerc & Sp Sci Rev, 39, 2, 68-76). Alternatively, the chronic balance of oxygen free radicals and their complementary antioxidants may be more important, suggesting regular exercise and dietry function rather than extremes of either are more significant contributors to cardiovascular health. Investigations, using small muscle mass oxidative stress such as knee extension training, which have minimal central cardiovascular responses, have demonstrated positive cardiovascular effects on blood pressure function (Richardson et al 2004, Am J Resp Crit Care Med, 169, 1, 89-96; Shephard et al 1997, Sports Medicine, 23, 2, 75-92). Such findings are important in subjects with central cardiovascular compromise, but moreover have an impact on exercise adherence where subjects do not enjoy whole body high oxidative stress exercise. Furthermore, although blood pressure wasn't shown to be effected by acute antioxidant supplementation, the muscle perfusion post exercise was 30-40% greater in the older individuals receiving supplementation (Wry et al 2009, Clin Sci (Lond.), 116, 5, 433-41). Moreover, phosphate markers of post exercise skeletal muscle energetics suggests further positive benefits of antioxidant supplementation in older individuals (Wry et all 2011, Exerc & Sp Sci Rev, 39, 2, 68-76). Therefore, regardless of the reduction in perfusion during exercise, post exercise effects of antioxidant supplemenation and the known increased functional capacity of trained individuals suggest efficient physiological musculoskeletal compensation, to mitigate against the aging process.

Exercise and pain

Individuals may exhibit reduced physical activity due to pain related 'fear-avoidance' behaviour. Unfortunately, this results in a viscous cycle of muscle atrophy and predisposition to muscle inflammation and injury. Cardiovascular training may stimulate the carotid sinus reflex, which via the ventral noradrenegic bundles (VNB) of the Locus Coeruleus to the Solitary Nucleus (Nucleus Tractus Solitarius) can provide descending modulation of pain in the neurons of the spinal cord.

The Locus Coeruleus is the origin of most noradrenergic neurons in the CNS. This pontine nucleus resides bilaterally next to the 4th ventricle. There are both dorsal and ventral bundles of neurones which have descending, ascending and cerebellar projections. The dorsal noradrenergic bundle (DNB) projects throughout the limbic system and neocotex and therefore has substantial influence on higher level brain activity. Any stimulus that threatens the biological, psychological or psychosocial integrity of the individual increases the firing of the Locus Coeruleus (LC). Thus, the LC is responsible for global vigilance for threatening and harmful stimuli. Interestingly the LC remains active during waking and non-REM sleep. Therefore, REM sleep is probably important for replenishing noradrenergic stores in the LC during suppression of sympathetic tone.

Does a relationship with chronic fatigue, bone density, thyroid function and the peripheral sympathetic nervous system exist? ? ?

The central sympathetic nervous system, osteoporosis and menstrual dysfunction (amenorrhea) as a consequence of over-training

Neurons in the medullary reticular formation project to the hypothalamus via the ventral noradrenergic bundle of the the LC. The hypothalamic paraventricular nucleus (PVN) coordinates the HPA axis. Neurons of the PVN receive afferent information from the ventrolateral medulla, dorsal raphe nucleus, nucleus raphe magnus, LC, dorsomedial nucleus and nuclues tractus solitarius. The PVN sends direct projections to the sympathetic intermediolateral cell column of the spinal cord, which in turn sends projections to the peripheral sympathetic nervous system. The peripheral sympathetic nervous system innervates the lymphatic glands. Prolonged nociception may cause sustained stress responses. Clinically this may manifest as fatigue, dysphoria, myalgia, nonrestorative sleep, somatic hypervigilence, reduced apetite and libido, impaired physical functioning and reduced concentration. Interestingly, these are also the signs and symptoms of over training. Well structured training regimes have the capacity to engage the body's capacity to regenerate and repair.

Anterior cruciate ligament (ACL) and the menstrual cycle

The ACL is designed to prevent forward shearing of the shin bone (tibia) on the thigh bone (femur).  Anterior knee laxity (AKL) and hyperextension of the knees were shown to be significant predictors of anterior tibial translation (ATT) in both males and females. Interestingly the restraining structures to knee hyperextension are the posterior cruciate ligament (PCL) and popliteus muscle, suggesting that the knee in non weight bearing is in a relative posterior position and hence allows for greater total anterior excursion of the tibia. Notably, if a females AKL changes as much as 3mm across her menstrual cycle the ATT changes by 2mm which represented a change of approx 30% in mean magnitude of the ATT (Schultz et al 2011 Med Sc Sp Ex, 43, 2, 287-295). Furthermore, in another investigation, the same authors demonstrated increased absolute and relative magnitudes of multiplanar knee laxity changes. These were seen as increased valgus coupled with relatively greater external rotation of the tibia, making the knee more susceptible to injury on ground contact and early in the landing phase (Schultz et al 2012 Med Sc Sp Ex, 44, 5, 900-909)

Muscle activation around the patella and the menstrual cycle

The initial firing rate is lower in the VMO (vastus medialis oblique) compared with VM (vastus medialis) in women not men. The firing rate is affected by the menstrual cycle, showing increases in initial firing during the early follicular phase through tp the late luteal phase. The initial firing was lower in VMO compared to VM during ovulatory and midluteal phases (Tenan et al 2013, Ex Sc Sp Ex, 45, 11, 2151-2157). This could play a bearing on anterior knee pain due to an increased lateral gliding of the patella over the femur, leading to patellofemoral syndrome.

Rises in Estrogen levels around ovulation have recently been demonstrated to increase the risk of traumatic knee injury in athletes. Furthermore, researchers hypothesized that oral monophasic contraceptive pill may reduce the incidence of cruciate ligament rupture. See the ABC website Catalyst for transcript, Thursday, 7th April 2005.

Young active female athletes frequently suffer from menstrual dysfunction, with late onset of menstruation (menarche), and/or amenorrhea which manifests as irregular menstrual cycles with disruption of the luteal phase of the cycle where it has been hypothesised that a surging luteal hormone phase competes with an endogenous opioid phase which affects bone mineral activity resulting in osteopenia in very young women (teenagers) which can lead to premature osteoporosis later in life. Additionally, nitrogen imbalance as welll as general negative energy imbalance have also been implicated in creating hormonal imbalances.

 

Predicting the failure of disc surgery by a hypofunctional HPA axis: evidence from a prospective study on patients undergoing disc surgery

Andrea Geiss, Nicolas Rohleder, Clemens Kirschbaum, Klaus Steinbach, Heinz W. Bauer and Fernand Anton

Abstract

Patients with postoperative ongoing sciatic pain have been shown to exhibit reduced cortisol levels along with enhanced IL-6 levels. The aim of the present study was to clarify the relationship between a reduced cortisol secretion and enhanced cytokine levels by performing a prospective study on patients with disc herniation. Twenty-two patients were examined before and after their disc surgery. Twelve healthy, pain-free subjects matched for age, education and gender constituted the control group. The preoperative examinations included the assessment of the diurnal pattern of cortisol secretion and the feedback sensitivity of the hypothalamus-pituitary-adrenal (HPA) axis. Patients' subjective stress levels also were assessed during the preoperative examination. The diurnal pattern of cortisol secretion was again assessed during the postoperative examination. Furthermore, blood samples were collected to measure catecholamine, adrenocorticotropic hormone (ACTH)- and interleukin-6 (IL-6) levels before and after measuring the pressure pain thresholds (PPTs). An assessment of the sensitivity of circulating monocytes to the immunosuppressive effects of glucocorticoids was further included in the postoperative examinations. Failed back syndrome (FBS) patients ( n =12) showed a reduced cortisol secretion in the morning hours and enhanced feedback sensitivity of the HPA axis. Furthermore, FBS patients displayed an increased in-vitro production of proinflammatory cytokines and a relative glucocorticoid resistance of pro-inflammatory cytokine producing monocytes as compared to non-FBS patients ( n =10) and controls. After PPT measurement FBS patients exhibited an increased norepinephrine but decreased epinephrine response, together with lower ACTH levels and a four times higher plasma IL-6 response. These findings suggest that chronically stressed patients are at a higher risk for a poor surgical outcome as their reduced cortisol secretion promotes the postoperative ongoing synthesis of proinflammatory cytokines.

Keywords: Sciatic pain; Hypothalamus-pituitary-adrenal axis; Localized glucocorticoid resistance; Proinflammatory cytokines; Chronic stress

Corresponding author. Address: Department of Orthopaedics, Sahlgrenska Academy, Göteborg University, SE-41345 Gothenburg, Sweden. Tel.: +46 31 342 6086; fax: +46 31 416816

Exercise, allostasis, cognitive behavioural therapy and immune responses

See also : Dworkin RH, Beitbart WS (2004) Psychosocial aspects of pain: a handbook for health care providers.  IASP Press

ISBN 0-931092-48 to 5

Additionally see : DeLeo JA, Yezierski RP (2001)  The role of neuroinflammation and neuroimmune activation in persistent pain. Pain, 90, 1 to 6

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29. Urso, M.L., T.M.F. Manfredi, and M.A. Fiatarone, Skeletal muscle IGF-I receptor localization and quantitation following resistance training in the frail elderly. Med Sci Sports Exercise. 2001;33:S187

30. Fielding RA, Manfredi T, Parzick A, Fiatarone M, Evans W, Cannon JG. Eccentric exercise-induced muscle injury in humans. Med Sci Sports Exercise 1996;28:188.

31. Ji LL, Leeuwenburgh C, Leichtweis S, et al. Oxidative Stress and Aging: Role of Exercise and Its Influences on Antioxidant Systems. Ann N Y Acad Sci. 1998;854:102 to 117.

32. Ji LL. Exercise at old age: does it increase or alleviate oxidative stress? Ann N Y Acad Sci. 2001;928:236 to 247.

33. Ji LL. Exercise-induced modulation of antioxidant defense. Ann N Y Acad Sci. 2002;959:82 to 92.

34. Reid MB, Durham WJ. Generation of Reactive Oxygen and Nitrogen Species in Contracting Skeletal Muscle: Potential Impact on Aging. Ann N Y Acad Sci. 2002;959:108 to 116.

35. Wei Y.-H. Oxidative stress and mitochondrial DNA mutations in human aging. Proceedings of the Society for Exp Biol Med (Maywood). 1998;217:53 to 63.

36. Greiwe JS, Cheng BO, Rubin DC, Yarasheski KE, Semenkovich CF. Resistance exercise decreases skeletal muscle tumor necrosis factor [alpha] in frail elderly humans. FASEB Journal. 2001;15:475 to 482.

37. Rall LC, Roubenoff R, Cannon JG, Abad LW, Dinarello CA, Meydani SN. Effects of progressive resistance training on immune response in aging and chronic inflammation. Med Sci Sports Exercise. 1996;28:1356 to 1365.

38. Zinna EM, Yarasheski KE. Exercise treatment to counteract protein wasting of chronic diseases. Curr Opin Clin Nutr Metab Care. 2003;6:87-93.

39. Woods JA, Lowder TW, Keylock KT. Can Exercise Training Improve Immune Function in the Aged? Ann N Y Acad Sci. 2002;959:117 to 127.

40. Roubenoff R, McDermott A, Weiss L et al . Short-term progressive resistance training increases strength and lean body mass in adults infected with human immunodeficiency virus. AIDS. 1999;13:231-239.

41. Sun G, Gagnon J, Chagnon YC, Pérusse L et al. Association and linkage studies between the IGF-1 gene and body composition: the heritage family study. Med Sci Sports Exercise. 1998; 30:7.

42. Gleeson M, Overview: Exercise immunology. Immunol Cell Biol. 2000;78:483 to 484.

43. Woods JA, Lowder TW, Keylock KT. Exercise and cellular innate immune function. Med Sci Sports Exercise. 1999;31:57 to 66

44. Dressendorfer RH, Petersen SR, Moss Lovshin SE, Hannon JL, Lee SF, Bell GJ. Performance enhancement with maintenance of resting immune status after intensified cycle training. Clin J Sport Med. 2002;12:301 to 307.

45. Armstrong LE, VanHeest JL. The unknown mechanism of the overtraining syndrome: clues from depression and psychoneuroimmunology. Sports Med. 2002;32:185 to 209.

46. Fiatarone Singh MA, Ding W, Manfredi TJ et al. Insulin-like growth factor I in skeletal muscle after weight-lifting exercise in frail elders. Am J Physiol Endocrinol Metab. 1999;277:E136 to E143.

47. Fiatarone MA, O'Neill EF, Ryan ND et al. Exercise Training and Nutritional Supplementation for physical frailty in very elderly people. N Engl J Med. 1994;330:1769 to 1775.

48. Hunter SM, White M, Thompson M. Techniques to evaluate elderly human muscle function: a physiological basis. J Geront Biol Sci. 1998:53A:B204 to B216.

49. Jonsdottir IH. Neuropeptides and their interaction with exercise and immune function. Immunol Cell Biol. 2000:78:562 to 570.

50. Krishnathasan DB, Vandervoort A. Eccentric Strength Training Prescription for Older Adults. Topics in Geriatric Rehabilitation. 2000;15:29 to 40.

51. Mackinnon LT. Overtraining effects on immunity and performance in athletes. Immunol Cell Biol. 2000;78:502-509.

52. Marcell TJ. Sarcopenia: causes, consequences, and preventions. J Gerontol Med Sci. 2003;58:911 to 916.

53. Yarasheski KE. Exercise, aging, and muscle protein metabolism. J Gerontol Med Sci. 2003;58:918 to 922.

 

References for Neuroendocrinology, Fibromyalgia, Thyroid, Pituitary, Hypothlamic-Gonadal axis, and Superior Cervical Ganglion

Alafou et al (1985). Origin and distribution of noradrenergic and NPY containing nerves in cerebral blood vessels of the gerbil. J.Cerebral Blood Flow, 5, S543 to 544

Acheson et al (1991). Detection of BDNF like activity in fibroblasts and Schwann cells: inhibition by antibodies to NGF. Neuron, 7, 265 to 275

Bennett et al (1989) Thyroid releasing hormone - catecholamine interactions in brain and spinal cord. Ann. NY Acad. Sci, 553, 106 to 120

Berenberg et al (1977). Recovery of peripheral nerve function after axotomy: effects of tri-iodothyronine. E xperimental Neurology, 57, 349 to 363

Bilezckian et al (1991). The influence of hyperthyroidism & hypothyroidism on alpha and beta adrenergic receptor systems and adrenergic responsiveness. Endo Reviews, 4, 378 to 388

Boada et al (1991). Evidence suggesting that the sympathetic nervous system mediates thyroidal depression in turpintine induced non thyroidal illness syndrome. Neuroendocrinology, 53, 360 to 364

Bijlsma et al (1984). Neurotrophic factors and nerve regeneration in the peripheral nervous system. Psychoneuroendocrinology, 9, 199 to 215

Bijlsma et al (1983a). Stimulation by ACTH 4-10 of nerve fibre regeneration following sciatic nerve crush. Muscle & Nerve, 6, 104 to 112

Bronk (1939) Synaptic mechanisms in sympathetic ganglion. J Neurophysiology, 2, 380 to 401

Brown & McAfee (1937) Long term potentiation in the superior cervical ganglion. Am J Physiol, 119, 221 to 235.

Brown et al (1989). Changes in blood pressure and plasma noradrenaline in short term hypothyroidism. Clinical Endocrinology, 30, 635 to 638

Butler et al (1982) Relationship of beta adrenoceptor density to fitness in athletes. Nature (London), 298, 60 to 62

Cardinali et al (1982). Efferent neuroendocrine pathways of the superior cervical ganglion (early depression of the pituitary-thyroid axis after ganglionectomy) Neuroendocrinology, 35, 248 to 254

Chanoine et al (1992) The role of transthyretin in the transport of thyroid hormone to cerebrospinal fluid and brain. Acta Med Austriaca, 19, Suppl 1, 25to 28

Chunhabundit et al (1992) Microvasculaturization of the rat superior cervical ganglion : a 3 dimensional observation. Acta Anatomica, 143, 54to 58

Danielson et al (1986). Experimental hyperthyroidism stimulates axonal growth in mesothelial chambers. Exp Neuro, 94, 54 to 65

de Florida et al (1991). Modulated long term potentiation in the cat superior cervical ganglion in vivo. Brain Res, 544, 203 to 210

Dessein et al (2000) Neuroendocrine deficiency-mediated development and persistence of pain in fibromyalgia : a promising paradigm? Pain, 86, 213-215

Fagius et al (1990) Baroreflex governed sympathetic outflow to muscle vasculture is increased in hypothyroidism. Clin Endo, 33, 177 to 185

Fogelfeld & Schneider (1990). Inhibition of chondroitin sulphate incorporation into human thyroglobulin Endo, 126, 1064 to 1069

Fone et al (1987) Regional distribution of substance P and thyrotropin releasing hormone like immunoreactivity and indoleamines in the rabbit spinal cord. J. Neurochem, 48, 1027-10323

Gillberg & Askmark (1991) Changes in Cholinergic and opioid receptors in the rat spinal cord, dorsal root and sciatic nerve after ventral and dorsal root lesion J Neural Transmission (Gen Sect), 85, 31 to 39

Landa et al (1991) In vitro effects of thyroxine on cholinergic neurotransmission in rat sympathetic superior cervical ganglion. Neuroendocrinology, 54, 552 to 558

Lehman et al (1992) Decreased nocturnal catecholamine excretion : parameter for an overtraining syndrome in athletes? Int. J. Sports Med, 12, 444 to 452

Lindvall et al (1978) Sympathetic nervous control of cerebrospinal fluid production from the choroid plexus. Science, 201, 176 to 8

Marcocci et al (1987) Norepinephrine and thyrotropin stimulation of iodide efflux in FRTL-5 thyroid cells involves metabolites of arachadonic acid and is associated with the iodination of thyroglobulin. Endocrinology, 120, 1127 to 1133

Mekhail et al (1990) Portal-like microcirculation in rat sympathetic ganglia. Acta Anatomica, 138, 200 to 207

Oleshansky et al (1990). The influence of fitness on neuroendocrine responses to exhaustive treadmill exercise. Euro. J. Appl. Physiol, 59, 405 to 410

Ratge et al (1987) Nebenwirkung und verhalten von Noradrenaline und Adrenaline in Plasma beim intravenoesen thyroliberin test bei Personen mit normaler und gestoerter Schilddruesen funktion. J. Clin. Chem & Clin Biomech, 25, 393 to 400

Stelmack & Kiernan (1977). Effects of triiodothyronine on the normal and regenerating facial nerve of the rat. Acta Neuropathologica, 40, 151 to 155

Tamamaki & Handa (1987) The distribution pattern of the sympathetic nerve fibres to the cerebral arterial system in rat as revealed by anterograde labeling with WGA-HRP. Exp Brain Res, 82, 493 to 498

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Immunohormonal responses to musculoskeletal injury initially conceptualised by Martin Krause 1991-3.  Submitted to Cumberland College, Sydney University as a possible Masters Research topic but rejected.

Endurance Training

©Martin Krause 2004-2005

Last update : 22 July 2006

 


 

Trending @ Back in B Physio

  • Thu 22 Dec 2016

    Ehlers Danlos Syndrome

    Is your child suffering Ehlers Danlos Syndrome? Hypermobile joints, frequent bruising, recurrent sprains and pains? Although a difficult manifestation to treat, physiotherapy can help. Joint Hypermobility Syndrome (JHS) When joint hypermobility coexists with arthralgias in >4 joints or other signs of connective tissue disorder (CTD), it is termed Joint Hypermobility Syndrome (JHS). This includes conditions such as Marfan's Syndrome and Ehlers-Danlos Syndrome and Osteogenesis imperfecta. These people are thought to have a higher proportion of type III to type I collagen, where type I collagen exhibits highly organised fibres resulting in high tensile strength, whereas type III collagen fibres are much more extensible, disorganised and occurring primarily in organs such as the gut, skin and blood vessels. The predominant presenting complaint is widespread pain lasting from a day to decades. Additional symptoms associated with joints, such as stiffness, 'feeling like a 90 year old', clicking, clunking, popping, subluxations, dislocations, instability, feeling that the joints are vulnerable, as well as symptoms affecting other tissue such as paraesthesia, tiredness, faintness, feeling unwell and suffering flu-like symptoms. Autonomic nervous system dysfunction in the form of 'dysautonomia' frequently occur. Broad paper like scars appear in the skin where wounds have healed. Other extra-articular manifestations include ocular ptosis, varicose veins, Raynauds phenomenon, neuropathies, tarsal and carpal tunnel syndrome, alterations in neuromuscular reflex action, development motor co-ordination delay (DCD), fibromyalgia, low bone density, anxiety and panic states and depression. Age, sex and gender play a role in presentaton as it appears more common in African and Asian females with a prevalence rate of between 5% and 25% . Despite this relatively high prevalence, JHS continues to be under-recognised, poorly understood and inadequately managed (Simmonds & Kerr, Manual Therapy, 2007, 12, 298-309). In my clinical experience, these people tend to move fast, rely on inertia for stability, have long muscles creating large degrees of freedom and potential kinetic energy, resembling ballistic 'floppies', and are either highly co-ordinated or clumsy. Stabilisation strategies consist of fast movements using large muscle groups. They tend to activities such as swimming, yoga, gymnastics, sprinting, strikers at soccer. Treatment has consisted of soft tissue techniques similar to those used in fibromyalgia, including but not limited to, dry needling, myofascial release and trigger point massage, kinesiotape, strapping for stability in sporting endeavours, pressure garment use such as SKINS, BSc, 2XU, venous stockings. Effectiveness of massage has been shown to be usefull in people suffering from chronic fatigue syndrome (Njjs et al 2006, Man Ther, 11, 187-91), a condition displaying several clinical similarities to people suffering from EDS-HT. Specific exercise regimes more attuned to co-ordination and stability (proprioception) than to excessive non-stabilising stretching. A multi-modal approach including muscle energy techniques, dry needling, mobilisations with movement (Mulligans), thoracic ring relocations (especially good with autonomic symptoms), hydrotherapy, herbal supplementaion such as Devils Claw, Cats Claw, Curcumin and Green Tee can all be useful in the management of this condition. Additionally, Arnica cream can also be used for bruising. Encouragment of non-weight bearing endurance activities such as swimming, and cycling to stimulate the endurance red muscle fibres over the ballistic white muscles fibres, since the latter are preferably used in this movement population. End of range movements are either avoided or done with care where stability is emphasized over mobility. People frequently complain of subluxation and dislocating knee caps and shoulders whilst undertaking a spectrum of activities from sleeping to sporting endeavours. A good friend of mine, Brazilian Physiotherapist and Researcher, Dr Abrahao Baptista, has used muscle electrical stimulation on knees and shoulders to retrain the brain to enhance muscular cortical representation which reduce the incidence of subluxations and dislocations. Abrahao wrote : "my daughter has a mild EDS III and used to dislocate her shoulder many times during sleeping.  I tried many alternatives with her, including strenghtening exercises and education to prevent bad postures before sleeping (e.g. positioning her arm over her head).  What we found to really help her was electrostimulation of the supraspinatus and posterior deltoid.  I followed the ideas of some works from Michael Ridding and others (Clinical Neurophysiology, 112, 1461-1469, 2001; Exp Brain Research, 143, 342-349 ,2002), which show that 30Hz electrostim, provoking mild muscle contractions for 45' leads to increased excitability of the muscle representation in the brain (at the primary motor cortex).  Stimulation of the supraspinatus and deltoid is an old technique to hemiplegic painful shoulder, but used with a little different parameters.  Previous studies showed that this type of stimulation increases brain excitability for 3 days, and so we used two times a week, for two weeks.  After that, her discolcations improved a lot.  It is important to note that, during stimulation, you have to clearly see the humerus head going up to the glenoid fossa" Surgery : The effect of surgical intervention has been shown to be favourable in only a limited percentage of patients (33.9% Rombaut et al 2011, Arch Phys Med Rehab, 92, 1106-1112). Three basic problems arise. First, tissues are less robust; Second, blood vessel fragility can cause technical problems in wound closure; Third, healing is often delayed and may remain incomplete.  Voluntary Posterior Shoulder Subluxation : Clinical Presentation A 27 year old male presented with a history of posterior shoulder weakness, characterised by severe fatigue and heaviness when 'working out' at the gym. His usual routine was one which involved sets of 15 repetitions, hence endurance oriented rather than power oriented. He described major problems when trying to execute bench presses and Japanese style push ups.  https://youtu.be/4rj-4TWogFU In a comprehensive review of 300 articles on shoulder instability, Heller et al. (Heller, K. D., J. Forst, R. Forst, and B. Cohen. Posterior dislocation of the shoulder: recommendations for a classification. Arch. Orthop. Trauma Surg. 113:228-231, 1994) concluded that posterior dislocation constitutes only 2.1% of all shoulder dislocations. The differential diagnosis in patients with posterior instability of the shoulder includes traumatic posterior instability, atraumatic posterior instability, voluntary posterior instability, and posterior instability associated with multidirectional instability. Laxity testing was performed with a posterior draw sign. The laxity was graded with a modified Hawkins scale : grade I, humeral head displacement that locks out beyond the glenoid rim; grade II, humeral displacement that is over the glenoid rim but is easily reducable; and grade III, humeral head displacement that locks out beyond the glenoid rim. This client had grade III laxity in both shoulders. A sulcus sign test was performed on both shoulders and graded to commonly accepted grading scales: grade I, a depression <1cm: grade 2, between 1.5 and 2cm; and grade 3, a depression > 2cm. The client had a grade 3 sulcus sign bilaterally regardless if the arm was in neutral or external rotation. The client met the criteria of Carter and Wilkinson for generalized liagmentous laxity by exhibiting hyperextension of both elbows > 10o, genu recurvatum of both knees > 19o, and the ability to touch his thumbto his forearm Headaches Jacome (1999, Cephalagia, 19, 791-796) reported that migraine headaches occured in 11/18 patients with EDS. Hakim et al (2004, Rheumatology, 43, 1194-1195) found 40% of 170 patients with EDS-HT/JHS had previously been diagnosed with migraine compared with 20% of the control population. in addition, the frequency of migraine attacks was 1.7 times increased and the headache related disability was 3.0 times greater in migraineurs with EDS-HT/JHS as compared to controls with migraine (Bendick et al 2011, Cephalgia, 31, 603-613). People suffering from soft tissue hypermobility, connective tissue disorder, Marfans Syndrome, and Ehler Danlos syndrome may be predisposed to upper cervical spine instability. Dural laxity, vascular irregularities and ligamentous laxity with or without Arnold Chiari Malformations may be accompanied by symptoms of intracranial hypotension, POTS (postural orthostatic tachycardia syndrome), dysautonomia, suboccipital "Coat Hanger" headaches (Martin & Neilson 2014 Headaches, September, 1403-1411). Scoliosis and spondylolisthesis occurs in 63% and 6-15% of patients with Marfans syndrome repsectively (Sponseller et al 1995, JBJS Am, 77, 867-876). These manifestations need to be borne in mind as not all upper cervical spine instabilities are the result of trauma. Clinically, serious neurological complications can arise in the presence of upper cervical spine instability, including a stroke or even death. Additionally, vertebral artery and even carotid artery dissections have been reported during and after chiropractic manipulation. Added caution may be needed after Whiplash type injuries. The clinician needs to be aware of this possibility in the presence of these symptoms, assess upper cervical joint hypermobility with manual therapy techniques and treat appropriately, including exercises to improve the control of musculature around the cervical and thoracic spine. Atlantoaxial instability can be diagnosed by flexion/extension X-rays or MRI's, but is best evaluated by using rotational 3D CT scanning. Surgical intervention is sometimes necessary. Temperomandibular Joint (TMJ) Disorders The prevelence of TMJ disorders have been reported to be as high as 80% in people with JHD (Kavucu et al 2006, Rheum Int., 26, 257-260). Joint clicking of the TMJ was 1.7 times more likely in JHD than in controls (Hirsch et al 2008, Eur J Oral Sci, 116, 525-539). Headaches associated with TMJ disorders tend to be in the temporal/masseter (side of head) region. TMJ issues increase in prevelence in the presence of both migraine and chronic daily headache (Goncalves et al 2011, Clin J Pain, 27, 611-615). I've treated a colleague who spontaneously dislocated her jaw whilst yawning at work one morning. stressful for me and her! Generally, people with JHD have increased jaw opening (>40mm from upper to lower incisors). Updated 18 May 2017  Read More
  • Fri 09 Dec 2016

    Physiotherapy with Sharna Hinchliff

    Physiotherapy with Sharna Hinchliff    Martin is pleased to welcome the very experienced physiotherapist Sharna Hinchliff to Back in Business Physiotherapy for one on one physiotherapy sessions with clients in 2017.  Sharna is a passionate triathelete and mother and has had several years experience working locally and internationally (New York and London) in the field of physiotherapy. Originally from Western Australia, Sharna graduated from the world renowned Masters of Manipulative Physiotherapy at Curtin University. read more Read More
  • Mon 07 Nov 2016

    Pilates – with Brunna Cardoso

    Pilates – with Brunna Cardoso Martin is pleased to welcome the bubbly Brunna Cardoso to Back in Business Physiotherapy for Pilates Classes in February 2017.  Brunno is an experienced pilates instructor and has had several years experience training with pilates instructors in Brazil. Read more Read More

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Updated : 10 May 2014

No responsibility is assumed by Back in Business Physiotherapy for any injury and/or damage to persons or property as a matter of product liability, negligence, or from any use of any methods, products, instruction, or ideas contained in the material in this and it's related websites. Because of rapid advances in the medical sciences, the author recommends that there should be independent verification of diagnoses and exercise prescription. The information provided on Back in Business Physiotherapy is designed to support, not replace, the relationship that exists between a patient/site visitor and their treating health professional.

Copyright Martin Krause 1999 - material is presented as a free educational resource however all intellectual property rights should be acknowledged and respected