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Exercise induced muscle damage

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https://www.readbyqxmd.com/read/29333801/efficacy-of-the-regent-suit-based-rehabilitation-on-gait-emg-patterns-in-hemiparetic-subjects-a-pilot-study
#1
Luigi Iuppariello, Giovanni D'Addio, Maria Romano, Paolo Bifulco, Nicola Pappone, Bernardo Lanzillo, Mario Cesarelli
BACKGROUND: The recovery of the functional limb mobility of patients with cerebral damages can take great benefit of the role offered by proprioceptive rehabilitation. Recently have been developed a special Regent Suit (RS) for rehabilitative applications. Actually, there are preliminary studies which describes the effects of RS on gait recovery of stroke patients in acute stage, but none in chronic stage. Moreover, it is known that motor recovery does not always reflect improvements of the muscle activity and coactivity...
January 11, 2018: European Journal of Physical and Rehabilitation Medicine
https://www.readbyqxmd.com/read/29324825/early-and-later-phases-satellite-cell-responses-and-myonuclear-content-with-resistance-training-in-young-men
#2
Felipe Damas, Cleiton A Libardi, Carlos Ugrinowitsch, Felipe C Vechin, Manoel E Lixandrão, Tim Snijders, Joshua P Nederveen, Aline V Bacurau, Patricia Brum, Valmor Tricoli, Hamilton Roschel, Gianni Parise, Stuart M Phillips
Satellite cells (SC) are associated with skeletal muscle remodelling after muscle damage and/or extensive hypertrophy resulting from resistance training (RT). We recently reported that early increases in muscle protein synthesis (MPS) during RT appear to be directed toward muscle damage repair, but MPS contributes to hypertrophy with progressive muscle damage attenuation. However, modulations in acute-chronic SC content with RT during the initial (1st-wk: high damage), early (3rd-wk: attenuated damage), and later (10th-wk: no damage) stages is not well characterized...
2018: PloS One
https://www.readbyqxmd.com/read/29315567/the-influence-of-capillarization-on-satellite-cell-pool-expansion-and-activation-following-exercise-induced-muscle-damage-in-healthy-young-men
#3
Joshua P Nederveen, Sophie Joanisse, Tim Snijders, Aaron Cq Thomas, Dinesh Kumbhare, Gianni Parise
Factors that determine the skeletal muscle satellite cell (SC) response remain incompletely understood. It is known, however, that SC activation status is closely related to the anatomical relationship between SC and muscle capillaries. We investigated the impact of muscle fibre capillarization on the expansion and activation status of SC following a muscle damaging exercise protocol in healthy young men. Twenty-nine young men (21 ± 0.5 yrs) performed 300 unilateral eccentric contractions (180 deg·s-1 ) of the knee extensors...
January 6, 2018: Journal of Physiology
https://www.readbyqxmd.com/read/29298131/a-systematic-review-of-p53-regulation-of-oxidative-stress-in-skeletal-muscle
#4
Kaitlyn Beyfuss, David A Hood
BACKGROUND: p53 is a tumor suppressor protein involved in regulating a wide array of signaling pathways. The role of p53 in the cell is determined by the type of imposed oxidative stress, its intensity and duration. The last decade of research has unravelled a dual nature in the function of p53 in mediating the oxidative stress burden. However, this is dependent on the specific properties of the applied stress and thus requires further analysis. METHODS: A systematic review was performed following an electronic search of Pubmed, Google Scholar, and ScienceDirect databases...
January 3, 2018: Redox Report: Communications in Free Radical Research
https://www.readbyqxmd.com/read/29287792/platycodon-grandiflorum-derived-saponin-attenuates-the-eccentric-exercise-induced-muscle-damage
#5
Yong-An Kim, Suck-Hoon Oh, Gi-Ho Lee, Pham Thi Hoa, Sun Woo Jin, Young Chul Chung, Young Chun Lee, Hye-Gwang Jeong
Platycodon grandiflorum contains triterpenoid saponins, such as platycodin D and platyconic acid A, and acts as a multifold nutritious compound. Our previous research demonstrated that Platycodon grandiflorum-derived saponin (PS) improves high-fat diet-induced non-alcoholic steatohepatitis and inhibits osteoclast differentiation. The pivotal effects of PS on inflammatory mechanism were suppressed NF-κB and matrix metalloproteinase (MMPs). However, the effects of PS on skeletal muscle damage remain unknown...
December 26, 2017: Food and Chemical Toxicology
https://www.readbyqxmd.com/read/29277517/corrigendum-to-branched-chain-amino-acid-supplementation-and-exercise-induced-muscle-damage-in-exercise-recovery-a-meta-analysis-of-randomized-clinical-trials-nutrition-42-10-2017-30-36
#6
Mohammad Hossein Rahimi, Sakineh Shab-Bidar, Mehdi Mollahosseini, Kurosh Djafarian
No abstract text is available yet for this article.
December 22, 2017: Nutrition
https://www.readbyqxmd.com/read/29274169/muscle-damage-protective-effect-by-two-maximal-isometric-contractions-on-maximal-eccentric-exercise-of-the-elbow-flexors-of-the-contralateral-arm
#7
Trevor C Chen, Ming-Ju Lin, Hsin-Lian Chen, Jian-Han Lai, Hui-I Yu, Kazunori Nosaka
Muscle damage after 30 maximal eccentric contractions of the elbow flexors (30MVEC) is reduced when the same exercise is performed by the opposite arm, and when two maximal voluntary isometric contractions at a long muscle length (2MVIC) are performed prior to 30MVEC by the same arm. This study investigated the hypothesis that 2MVIC would attenuate muscle damage after 30MVEC performed by the opposite arm. Untrained young (20-25 y) men were placed into one of four experimental groups that performed 2MVIC at 1 (1d), 2 (2d), 4 (4d) or 7 days (7d) before 30 MVEC by the opposite arm, or one control group that performed 30MVEC only (n=13/group)...
December 23, 2017: Scandinavian Journal of Medicine & Science in Sports
https://www.readbyqxmd.com/read/29212849/trim63-murf-1-gene-polymorphism-is-associated-with-biomarkers-of-exercise-induced-muscle-damage
#8
Philipp Baumert, Mark J Lake, Barry Drust, Claire Stewart, Robert M Erskine
Unaccustomed strenuous exercise can lead to muscle strength loss, inflammation and delayed onset muscle soreness, which may be influenced by genetic variation. We investigated if a missense single nucleotide polymorphism (A>G, rs2275950) within the TRIM63 gene (encoding MuRF-1 and potentially affecting titin mechanical properties) was associated with the variable response to unaccustomed eccentric exercise. Sixty-five untrained, healthy participants (genotyped for rs2275950: AA, AG and GG) performed 120 maximal eccentric knee extensions (ECC) to induce muscle damage...
December 6, 2017: Physiological Genomics
https://www.readbyqxmd.com/read/29200908/ursolic-acid-supplementation-decreases-markers-of-skeletal-muscle-damage-during-resistance-training-in-resistance-trained-men-a-pilot-study
#9
Hyun Seok Bang, Dae Yun Seo, Young Min Chung, Do Hyung Kim, Sam-Jun Lee, Sung Ryul Lee, Hyo-Bum Kwak, Tae Nyun Kim, Min Kim, Kyoung-Mo Oh, Young Jin Son, Sanghyun Kim, Jin Han
Ursolic acid (UA) supplementation was previously shown to improve skeletal muscle function in resistance-trained men. This study aimed to determine, using the same experimental paradigm, whether UA also has beneficial effects on exercise-induced skeletal muscle damage markers including the levels of cortisol, B-type natriuretic peptide (BNP), myoglobin, creatine kinase (CK), creatine kinase-myocardial band (CK-MB), and lactate dehydrogenase (LDH) in resistance-trained men. Sixteen healthy participants were randomly assigned to resistance training (RT) or RT+UA groups (n=8 per group)...
November 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29200906/effects-of-intermittent-ladder-climbing-exercise-training-on-mitochondrial-biogenesis-and-endoplasmic-reticulum-stress-of-the-cardiac-muscle-in-obese-middle-aged-rats
#10
Kijin Kim, Nayoung Ahn, Suryun Jung, Solee Park
The aim of this study is to investigate the effects of intermittent ladder-climbing exercise training on mitochondrial biogenesis and ER stress of the cardiac muscle in high fat diet-induced obese middle-aged rats. We induced obesity over 6 weeks of period in 40 male Sprague-Dawley rats around 50 weeks old, and were randomly divided into four experimental groups: chow, HFD, exercise+HFD, and exercise+chow. The exercising groups underwent high-intensity intermittent training using a ladder-climbing and weight exercise 3 days/week for a total of 8 weeks...
November 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29200899/effects-of-exercise-on-obesity-induced-mitochondrial-dysfunction-in-skeletal-muscle
#11
REVIEW
Jun-Won Heo, Mi-Hyun No, Dong-Ho Park, Ju-Hee Kang, Dae Yun Seo, Jin Han, P Darrell Neufer, Hyo-Bum Kwak
Obesity is known to induce inhibition of glucose uptake, reduction of lipid metabolism, and progressive loss of skeletal muscle function, which are all associated with mitochondrial dysfunction in skeletal muscle. Mitochondria are dynamic organelles that regulate cellular metabolism and bioenergetics, including ATP production via oxidative phosphorylation. Due to these critical roles of mitochondria, mitochondrial dysfunction results in various diseases such as obesity and type 2 diabetes. Obesity is associated with impairment of mitochondrial function (e...
November 2017: Korean Journal of Physiology & Pharmacology
https://www.readbyqxmd.com/read/29182431/impact-induced-muscle-damage-and-contact-sport-aetiology-effects-on-neuromuscular-function-and-recovery-and-the-modulating-effects-of-adaptation-and-recovery-strategies
#12
Mitchell Naughton, Joanna Miller, Gary J Slater
Athletes involved in contact-sports are habitually exposed to skeletal muscle damage as part of their training and performance environments. This often leads to exercise-induced muscle damage (EIMD) resulting from repeated eccentric and/or high-intensity exercise, and impact-induced muscle damage (IIMD) resulting from collisions with opponents and the playing surface. Whilst EIMD has been an area of extensive investigation, IIMD has received comparatively little research, with the magnitude and timeframe of alterations following IIMD not presently well understood...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29182414/cfdna-as-an-earlier-predictor-of-exercise-induced-performance-decrement-related-to-muscle-damage
#13
Michely V Andreatta, Victor M Curty, João Victor S Coutinho, Miguel Ângelo A Santos, Paula F Vassallo, Nuno F de Sousa, Valério G Barauna
PURPOSE: The aims of this study were: a) to evaluate whether cell-free DNA (cfDNA) levels increase immediately after an acute light and heavy resistance exercise (RE) bout, and b) to whether cfDNA levels are associated with functional muscle capacity until 48hrs after exercise session. METHODS: Twenty healthy volunteers performed 3 sets of the leg press resistance exercise with 80% of 1RM (RE80) or 40% of 1RM (RE40) with similar exercise volume. Blood lactate was measured after completion of the 3 sets...
November 28, 2017: International Journal of Sports Physiology and Performance
https://www.readbyqxmd.com/read/29178461/the-guardian-of-the-genome-p53-regulates-exercise-induced-mitochondrial-plasticity-beyond-organelle-biogenesis
#14
REVIEW
William J Smiles, Donny M Camera
The Guardian of the Genome p53 has been established as a potent tumor suppressor. However, culminating from seminal findings in rodents more than a decade ago, several studies have demonstrated that p53 is required to maintain basal mitochondrial function [i.e., respiration and reactive oxygen species (ROS) homeostasis]. Specifically, via its role(s) as a tumor suppressor, p53 intimately surveys cellular DNA damage, in particular mitochondrial DNA (mtDNA), to ensure that the mitochondrial network is carefully monitored and cell viability is upheld, since aberrant mtDNA damage leads to apoptosis and widespread cellular perturbations...
November 27, 2017: Acta Physiologica
https://www.readbyqxmd.com/read/29161748/whole-body-cryotherapy-as-a-recovery-technique-after-exercise-a-review-of-the-literature
#15
Catriona Rose, Kate M Edwards, Jason Siegler, Kenneth Graham, Corinne Caillaud
This review aims to evaluate the current body of literature investigating the effect of whole body cryotherapy on recovery after exercise. A systematic search was conducted to investigate the effect of whole body cryotherapy (WBC, exposure to temperatures between -110 to -190°C) on markers of recovery after damaging exercise in healthy, physically active subjects. Of the 16 eligible articles extracted, ten induced muscle damage using controlled exercise in a laboratory setting, while six induced damage during sport-specific training...
November 21, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/29152896/trimetazidine-restores-the-positive-adaptation-to-exercise-training-by-mitigating-statin-induced-skeletal-muscle-injury
#16
Ming Song, Fang-Fang Chen, Yi-Hui Li, Lei Zhang, Feng Wang, Ran-Ran Qin, Zhi-Hao Wang, Ming Zhong, Meng-Xiong Tang, Wei Zhang, Lu Han
BACKGROUND: Exercise rehabilitation is demonstrated to improve the prognosis of patients with coronary heart disease (CHD). Statins, as the key medicine to lower cholesterol in CHD, result in skeletal muscle injury and impair exercise training adaptation. Energy metabolism dysfunction is identified as the potential mechanism underlying statin-induced skeletal muscle injury. In this study, we investigated the effects of the metabolic modulator trimetazidine on skeletal muscle energy metabolism and statin-associated exercise intolerance...
November 19, 2017: Journal of Cachexia, Sarcopenia and Muscle
https://www.readbyqxmd.com/read/29140910/polygenic-profile-and-exercise-induced-muscle-damage-by-a-competitive-half-ironman
#17
Juan Del Coso, Juan J Salinero, Beatriz Lara, César Gallo-Salazar, Francisco Areces, David Herrero, Carlos Puente
Del Coso, J, Salinero, JJ, Lara, B, Gallo-Salazar, C, Areces, F, Herrero, D, and Puente, C. Polygenic profile and exercise-induced muscle damage by a competitive half-ironman. J Strength Cond Res XX(X): 000-000, 2017-To date, it is still unknown why some individuals develop higher levels of muscle damage than other individuals, despite participating in exercise with comparable levels of physical intensity. The aim of this investigation was to analyze 7 single-nucleotide polymorphisms (SNPs) that are candidates to explain individual variations in the level of muscle damage attained during a half-ironman competition...
November 14, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29134614/acute-exercise-during-hemodialysis-prevents-the-decrease-in-natural-killer-cells-in-patients-with-chronic-kidney-disease-a-pilot-study
#18
Maria Isabel Fuhro, Gilson P Dorneles, Francini P Andrade, Pedro R T Romão, Alessandra Peres, Mariane B Monteiro
PURPOSE: To evaluate the acute response of natural killer (NK) cell subsets of chronic kidney disease patients submitted to intradialytic exercise in a randomized crossover study. METHODS: Nine patients were submitted to a single bout of 20-min intradialytic exercise and a control hemodialysis (HD) session with an interval of 7 days between them. Peripheral blood sample was collected at baseline, during HD and immediately after HD in each trial to evaluate the peripheral frequency of NK cells and their subsets (CD3-CD56(bright) and CD3-CD56(dim)), systemic cortisol concentrations, C-reactive protein (CRP), creatine kinase activity (CK), and urea and creatinine levels...
November 13, 2017: International Urology and Nephrology
https://www.readbyqxmd.com/read/29127187/apobec2-deficiency-causes-mitochondrial-defects-and-mitophagy-in-skeletal-muscle
#19
Yusuke Sato, Hideaki Ohtsubo, Naohiro Nihei, Takane Kaneko, Yoriko Sato, Shin-Ichi Adachi, Shinji Kondo, Mako Nakamura, Wataru Mizunoya, Hiroshi Iida, Ryuichi Tatsumi, Cristina Rada, Fumiaki Yoshizawa
Apobec2 is a member of the activation-induced deaminase/apolipoprotein B mRNA editing enzyme catalytic polypeptide cytidine deaminase family expressed in differentiated skeletal and cardiac muscle. We previously reported that Apobec2 deficiency in mice leads to a shift in muscle fiber type, myopathy, and diminished muscle mass. However, the mechanisms of myopathy caused by Apobec2 deficiency and its physiologic functions are unclear. Here we show that, although Apobec2 localizes to the sarcomeric Z-lines in mouse tissue and cultured myotubes, the sarcomeric structure is not affected in Apobec2-deficient muscle...
November 10, 2017: FASEB Journal: Official Publication of the Federation of American Societies for Experimental Biology
https://www.readbyqxmd.com/read/29123488/wearing-compression-tights-on-the-thigh-during-prolonged-running-attenuated-exercise-induced-increase-in-muscle-damage-marker-in-blood
#20
Sahiro Mizuno, Mari Arai, Fumihiko Todoko, Eri Yamada, Kazushige Goto
Purpose: To examine the effects of wearing a lower-body compression garment with different body coverage areas during prolonged running on exercise performance and muscle damage. Methods: Thirty male subjects were randomly assigned to one of three groups: (1) wearing a compression tights with 15 mmHg to thigh [n = 10, CT group], (2) wearing a compression socks with 15 mmHg to calf [n = 10, CS group], and (3) wearing a lower-body garment with < 5 mmHg to thigh and calf [n = 10, CON group]. The exercise consisted of 120 min of uphill running at 55% of [Formula: see text]O2max...
2017: Frontiers in Physiology
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