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https://www.readbyqxmd.com/read/28332118/nutrition-and-training-influences-on-the-regulation-of-mitochondrial-adenosine-diphosphate-sensitivity-and-bioenergetics
#1
REVIEW
Graham P Holloway
Since the seminal finding almost 50 years ago that exercise training increases mitochondrial content in skeletal muscle, a considerable amount of research has been dedicated to elucidate the mechanisms inducing mitochondrial biogenesis. The discovery of peroxisome proliferator-activated receptor γ co-activator 1α as a major regulator of exercise-induced gene transcription was instrumental in beginning to understand the signals regulating this process. However, almost two decades after its discovery, our understanding of the signals inducing mitochondrial biogenesis remain poorly defined, limiting our insights into possible novel training modalities in elite athletes that can increase the oxidative potential of muscle...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28332115/periodized-nutrition-for-athletes
#2
REVIEW
Asker E Jeukendrup
It is becoming increasingly clear that adaptations, initiated by exercise, can be amplified or reduced by nutrition. Various methods have been discussed to optimize training adaptations and some of these methods have been subject to extensive study. To date, most methods have focused on skeletal muscle, but it is important to note that training effects also include adaptations in other tissues (e.g., brain, vasculature), improvements in the absorptive capacity of the intestine, increases in tolerance to dehydration, and other effects that have received less attention in the literature...
March 22, 2017: Sports Medicine
https://www.readbyqxmd.com/read/28286988/exercise-and-nutritional-approaches-to-prevent-frail-bones-falls-and-fractures-an-update
#3
REVIEW
R M Daly
Osteoporosis (low bone strength) and sarcopenia (low muscle mass, strength and/or impaired function) often co-exist (hence the term 'sarco-osteoporosis') and have similar health consequences with regard to disability, falls, frailty and fractures. Exercise and adequate nutrition, particularly with regard to vitamin D, calcium and protein, are key lifestyle approaches that can simultaneously optimize bone, muscle and functional outcomes in older people, if they are individually tailored and appropriately prescribed in terms of the type and dose...
April 2017: Climacteric: the Journal of the International Menopause Society
https://www.readbyqxmd.com/read/28272266/lack-of-activation-of-mitophagy-during-endurance-exercise-in-human
#4
Céline Schwalm, Louise Deldicque, Marc Francaux
PURPOSE: To determine whether fission and mitophagy are activated by acute endurance exercise in human skeletal muscle and to investigate if this activation is dependent upon the nutritional state. METHODS: Trained athletes (n = 7) cycled for 2 h at 70% VO2 peak in a fed or fasted state. Vastus lateralis muscle biopsies were obtained at baseline, before, immediately after and 1 h after exercise. Protein and mRNA markers for mitophagy, mitochondrial biogenesis, fission and fusion were analyzed using qRT-PCR and Western blot...
March 8, 2017: Medicine and Science in Sports and Exercise
https://www.readbyqxmd.com/read/28271727/impact-of-sarcopenia-in-the-management-of-urological-cancer-patients
#5
Hiroshi Fukushima, Fumitaka Koga
Sarcopenia, the degenerative and systemic loss of skeletal muscle mass, develops as a consequence of the progression of cancer cachexia. Recent studies suggest that sarcopenia may be used as a biomarker in the management of patients with several cancers. Areas covered: In this article, the authors review 1) the methods to simply and optimally evaluate and define sarcopenia using computed tomography images in daily clinical practice and 2) the impact of sarcopenia in the management of urological cancers, specifically focusing on the usefulness in predicting treatment-related complications and prognosis...
March 8, 2017: Expert Review of Anticancer Therapy
https://www.readbyqxmd.com/read/28270867/gene-expression-is-differentially-regulated-in-skeletal-muscle-and-circulating-immune-cells-in-response-to-an-acute-bout-of-high-load-strength-exercise
#6
Gyrd O Gjevestad, Håvard Hamarsland, Truls Raastad, Inger Ottestad, Jacob J Christensen, Kristin Eckardt, Christian A Drevon, Anne S Biong, Stine M Ulven, Kirsten B Holven
BACKGROUND: High-intensity exercise induces many metabolic responses. In is unknown whether the response in the peripheral blood mononuclear cells (PBMCs) reflects the response in skeletal muscle and whether mRNA expression after exercise can be modulated by nutritional intake. The aims were to (i) investigate the effect of dairy proteins on acute responses to exercise in skeletal muscle and PBMCs measuring gene expression and (ii) compare this response in young and older subjects. METHODS: We performed two separate studies in young (20-40 years) and older subjects (≥70 years)...
2017: Genes & Nutrition
https://www.readbyqxmd.com/read/28265543/herbs-and-natural-supplements-in-the-prevention-and-treatment-of-delayed-onset-muscle-soreness
#7
REVIEW
Abbas Meamarbashi
OBJECTIVE: Unaccustomed and intense eccentric exercise is a common cause of delayed-onset muscle soreness (DOMS). There are multiple remedies for the treatment of DOMS, but its clinical and laboratory pieces of evidence are scarce. Currently, the treatments proposed for DOMS are numerous and include pharmaceuticals, herbal remedies, stretching, massage, nutritional supplements, and other alternatives. To find a holistic treatment with effective pain relief and minimum side effects, complementary and alternative medicine, including herbal therapies, plays a main role...
January 2017: Avicenna Journal of Phytomedicine
https://www.readbyqxmd.com/read/28262570/peripheral-muscle-abnormalities-in-cystic-fibrosis-etiology-clinical-implications-and-response-to-therapeutic-interventions
#8
Mathieu Gruet, Thierry Troosters, Samuel Verges
Peripheral muscle dysfunction is an important systemic consequence of cystic fibrosis (CF) with major clinical implications, such as exercise intolerance and reduced quality of life. Evidence is now accumulating that lack of physical activity is unlikely to be the sole explanation for peripheral muscle dysfunction of patients with CF. Particularly, the demonstration of CFTR expression in both murine and human skeletal muscle suggests the potential implication of intrinsic CF-related factors. By combining data from both human and animal models, this review describes CF peripheral muscle abnormalities and critically reviews the advances in understanding the impact of the underlying mechanisms...
March 2, 2017: Journal of Cystic Fibrosis: Official Journal of the European Cystic Fibrosis Society
https://www.readbyqxmd.com/read/28261043/the-role-of-circadian-rhythms-in-muscular-and-osseous-physiology-and-their-regulation-by-nutrition-and-exercise
#9
REVIEW
Shinya Aoyama, Shigenobu Shibata
The mammalian circadian clock regulates the day and night cycles of various physiological functions. The circadian clock system consists of a central clock in the suprachiasmatic nucleus (SCN) of the hypothalamus and peripheral clocks in peripheral tissues. According to the results of circadian transcriptomic studies in several tissues, the majority of rhythmic genes are expressed in a tissue-specific manner and are influenced by tissue-specific circadian rhythms. Here we review the diurnal variations of musculoskeletal functions and discuss the impact of the circadian clock on homeostasis in skeletal muscle and bone...
2017: Frontiers in Neuroscience
https://www.readbyqxmd.com/read/28253982/clinical-aspects-of-glucose-metabolism-and-chronic-disease
#10
J W Culberson
The burden of chronic disease is an emerging world health problem. Advances made in the treatment of individual disease states often fail to consider multimorbidity patterns in clinical research models. Adjusting for age as a confounder ignores its contribution as a powerful risk factor for most chronic diseases. Sarcopenia is an age-related loss of skeletal muscle mass, which is accelerated by chronic inflammation and its resulting cascade of cytokines. Skeletal muscle loss results in insulin resistance, hyperglycemia, and altered mitochondrial glucose signaling pathways...
2017: Progress in Molecular Biology and Translational Science
https://www.readbyqxmd.com/read/28251287/nutrition-and-physical-activity-in-the-prevention-and-treatment-of-sarcopenia-systematic-review
#11
REVIEW
C Beaudart, A Dawson, S C Shaw, N C Harvey, J A Kanis, N Binkley, J Y Reginster, R Chapurlat, D C Chan, O Bruyère, R Rizzoli, C Cooper, E M Dennison
This systematic review summarizes the effect of combined exercise and nutrition intervention on muscle mass and muscle function. A total of 37 RCTs were identified. Results indicate that physical exercise has a positive impact on muscle mass and muscle function in subjects aged 65 years and older. However, any interactive effect of dietary supplementation appears to be limited. INTRODUCTION: In 2013, Denison et al. conducted a systematic review including 17 randomized controlled trials (RCTs) to explore the effect of combined exercise and nutrition intervention to improve muscle mass, muscle strength, or physical performance in older people...
March 1, 2017: Osteoporosis International
https://www.readbyqxmd.com/read/28229646/special-nutrition-intervention-is-required-for-muscle-protective-efficacy-of-physical-exercise-in-elderly-people-at-highest-risk-of-sarcopenia
#12
A Molnár, I Jónásné Sztruhár, Á A Csontos, Cs Ferencz, Sz Várbíró, B Székács
Progressive loss of muscle mass and strength is a physiological consequence of aging, and without interventions, it usually deteriorates into sarcopenia. In this study, the hypothesis that combined special nutritional-physiotherapeutical intervention to prevent or reverse this biological deterioration in elderly people was tested. The effects of the regular resistance muscle training (PT, n = 17) alone and the combined exercise + special nutrition therapy containing whey protein and vitamin D (PT + NT, n = 17) were monitored for 3 months in 34 elderly patients (12 men and 22 women; mean age: 66...
September 2016: Physiol Int
https://www.readbyqxmd.com/read/28204901/the-effect-of-hydration-status-on-the-measurement-of-lean-tissue-mass-by-dual-energy-x-ray-absorptiometry
#13
Clodagh M Toomey, William G McCormack, Phil Jakeman
PURPOSE: Athletes cycle between exercise and recovery. Exercise invokes changes in total body water from thermal sweating, muscle and hepatic glycogen depletion and metabolic water loss. Recovery from exercise results in rehydration, substrate repletion, and possible glycogen supercompensation. Such changes may corrupt the measurement of hydrated tissues, such as lean tissue mass (LTM), by dual-energy X-ray absorptiometry (DXA). The purpose of this study was to determine the effect of exercise and thermal dehydration and subsequent glycogen supercompensation on DXA-based measurement of body composition...
March 2017: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/28187143/the-relation-between-exercise-and-glaucoma-in-a-south-korean-population-based-sample
#14
Shuai-Chun Lin, Sophia Y Wang, Louis R Pasquale, Kuldev Singh, Shan C Lin
PURPOSE: To investigate the association between exercise and glaucoma in a South Korean population-based sample. DESIGN: Population-based, cross-sectional study. PARTICIPANTS: A total of 11,246 subjects, 40 years and older who underwent health care assessment as part of the 2008-2011 Korean National Health and Nutrition Examination Survey. METHODS: Variables regarding the duration (total minutes per week), frequency (days per week), and intensity of exercise (vigorous, moderate exercise and walking) as well as glaucoma prevalence were ascertained for 11,246 survey participants...
2017: PloS One
https://www.readbyqxmd.com/read/28144165/osteosarcopenic-obesity-in-women-impact-prevalence-and-management-challenges
#15
REVIEW
Pegah JafariNasabian, Julia E Inglis, Owen J Kelly, Jasminka Z Ilich
Osteosarcopenic obesity syndrome (OSO) has recently been identified as a condition encompassing osteopenia/osteoporosis, sarcopenia and obesity. OSO is especially deleterious in older adults (even if they are not obese by conventional measures), due to age-related redistribution of fat and its infiltration into bone and muscle. Osteoporosis and bone fractures in elderly increase the risk of sarcopenia, which, through decreased mobility, increases the risk of more falls and fractures, creating a vicious cycle...
2017: International Journal of Women's Health
https://www.readbyqxmd.com/read/28143855/-nutraceuticals-in-relation-to-human-skeletal-muscle-and-exercise
#16
Colleen Siobhan Deane, Daniel J Wilkinson, Bethan E Phillips, Kenneth Smith, Timothy Etheridge, Philip J Atherton
Skeletal muscles have a fundamental role in locomotion and whole body metabolism, with muscle mass and quality being linked to improved health and even lifespan. Optimising nutrition in combination with exercise is considered an established, effective ergogenic practice for athletic performance. Importantly, exercise and nutritional approaches also remain arguably the most effective countermeasure for muscle dysfunction associated with ageing and numerous clinical conditions e.g. cancer cachexia, COPD and organ failure, via engendering favourable adaptations such as increased muscle mass and oxidative capacity...
January 31, 2017: American Journal of Physiology. Endocrinology and Metabolism
https://www.readbyqxmd.com/read/28138933/update-on-management-of-cancer-related-cachexia
#17
REVIEW
Lindsey J Anderson, Eliette D Albrecht, Jose M Garcia
Cachexia is a metabolic syndrome driven by inflammation and characterized by loss of muscle with or without loss of fat mass. In cancer cachexia, the tumor burden and host response induce increased inflammation, decreased anabolic tone, and suppressed appetite leading to the clinical presentation of reduced body weight and quality of life (QOL). There is no approved treatment for cancer cachexia, and commonly used nutritional and anti-inflammatory strategies alone have proven ineffective for management of symptoms...
January 2017: Current Oncology Reports
https://www.readbyqxmd.com/read/28138130/physical-inactivity-a-risk-factor-and-target-for-intervention-in-renal-care
#18
REVIEW
Dorien M Zelle, Gerald Klaassen, Edwin van Adrichem, Stephan J L Bakker, Eva Corpeleijn, Gerjan Navis
Regular physical activity is associated with an increased quality of life and reduced morbidity and mortality in the general population and in patients with chronic kidney disease (CKD). Physical activity, cardiorespiratory fitness, and muscle mass decrease even in the early stages of CKD, and continue to decrease with disease progression; notably, full recovery is generally not achieved with transplantation. The combined effects of uraemia and physical inactivity drive the loss of muscle mass. Regular physical activity benefits cardiometabolic, neuromuscular and cognitive function across all stages of CKD, and therefore provides an approach to address the multimorbidity of the CKD population...
March 2017: Nature Reviews. Nephrology
https://www.readbyqxmd.com/read/28129048/physical-inactivity-obesity-and-type-2-diabetes-an-evolutionary-perspective
#19
S Boyd Eaton, Stanley B Eaton
Physical inactivity (and unhealthy nutrition) has distorted body composition and, in turn, reordered the proportions of myocyte and adipocyte insulin receptors. Insulin acting on adipocyte receptors produces less glucose uptake than does comparable interaction with myocyte receptors. Accordingly, in individuals with disproportionate muscle/fat composition, any given glucose load requires greater-than-normal pancreatic insulin secretion for adequate disposal. This hyperinsulinemia then becomes the leading cause of type 2 diabetes (T2DM) as insulin-sensitive tissues become desensitized...
March 2017: Research Quarterly for Exercise and Sport
https://www.readbyqxmd.com/read/28124947/differentiating-sarcopenia-and-cachexia-among-patients-with-cancer
#20
Sarah J Peterson, Marisa Mozer
Patients with cancer are at an increased risk for muscle loss via 2 distinct mechanisms: sarcopenia, defined as the age-associated decrease in muscle mass related to changes in muscle synthesis signaling pathways, and/or cachexia, defined as cytokine-mediated degradation of muscle and adipose depots. Both wasting disorders are prevalent; among patients with cancer, 15%-50% are sarcopenic and 25%-80% are cachectic. Muscle mass may be difficult to quantify in overweight/obese individuals. Often, overweight/obese patients with cancer are assumed to be normally nourished when in fact severe muscle depletion may be present...
February 2017: Nutrition in Clinical Practice
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