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Exercise induced muscle damage

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https://www.readbyqxmd.com/read/29140910/polygenic-profile-and-exercise-induced-muscle-damage-by-a-competitive-half-ironman
#1
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
#2
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
#3
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
#4
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
https://www.readbyqxmd.com/read/29120980/effect-of-cold-water-immersion-on-elbow-flexors-muscle-thickness-after-resistance-training
#5
Filipe Matos, Eduardo Borba Neves, Claudio Rosa, Victor Machado Reis, Francisco Saavedra, Severiano Silva, José Vilaça-Alves
Cold Water Immersion (CWI) is commonly applied in order to speed up the recovery process after exercise. Muscle damage may induce a performance reduction, consequence of the intramuscular pressure induced by the muscular swelling. The aim of the study was to verify the CWI effects on muscle thickness (MT) behavior of the elbow flexors after a strength training protocol (ST). Eleven males were submitted to a RT, performed in two different weeks. In one of the weeks, subjects experienced a passive recovery. In the other, subjects were submitted to a CWI (20 min at 5C-10°C)...
November 6, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29106812/whey-protein-hydrolysate-supplementation-accelerates-recovery-from-exercise-induced-muscle-damage-in-females
#6
Meghan A Brown, Emma J Stevenson, Glyn Howatson
A number of different forms of protein and their analogues have been investigated for their efficacy in ameliorating exercise-induced muscle damage (EIMD) and recovery. Preliminary data regarding whey protein hydrolysate (WPH) supplementation are promising. However, its efficacy beyond acute eccentric/resistance exercise bouts or longer-term training programmes are limited and all investigations have been conducted in male or mixed-sex groups. This study sought to elucidate whether the benefits of WPH previously reported can be demonstrated in females following repeated-sprint exercise...
November 6, 2017: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/29091464/effect-of-four-weeks-ingestion-of-tomato-based-carotenoids-on-exercise-induced-inflammation-muscle-damage-and-oxidative-stress-in-endurance-runners
#7
David C Nieman, Courtney L Capps, Christopher R Capps, Zack L Shue, Jennifer E McBride
This double blind, randomized, placebo controlled crossover trial determined if ingestion of a supplement containing a tomato extract with 11 mg lycopene, phytoene, and phytofluene (T-LPP) for 4 weeks would attenuate inflammation, muscle damage, and oxidative stress post-exercise and during recovery from a 2-h running bout that included 30 minutes of -10% downhill running. Study participants ingested the T-LPP supplement or placebo with the evening meal for 4 weeks prior to running 2 h at high intensity. Blood samples and delayed-onset of muscle soreness (DOMS) ratings were taken pre- and post-4-weeks supplementation, and immediately following the 2-h run, and then 1-h-, 24-h-, and 48-h post-run...
November 1, 2017: International Journal of Sport Nutrition and Exercise Metabolism
https://www.readbyqxmd.com/read/29084097/differential-effects-of-different-warm-up-protocols-on-repeated-sprints-induced-muscle-damage
#8
Che-Hsiu Chen, Xin Ye, Yi-Tse Wang, Yung-Sheng Chen, Wei-Chin Tseng
The purpose of this investigation was to examine whether adding a set of hamstring resistance exercise or dynamic stretching to a regular running-based warm-up before a bout of repeated sprints provides protective effects against the sprinting-induced muscle damage. Twelve elite tennis players participated in this study. After the familiarization, subjects completed 3 separate randomly sequenced experimental visits, during which 3 different warm-up interventions were performed before the muscle-damaging protocol (12 sets of 30-m maximal repeated sprints): 5 minutes of running (control); control with single leg slide curl (SLC); and control with active hamstring stretching (AHS)...
October 27, 2017: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/29082755/influence-of-different-types-of-compression-garments-on-exercise-induced-muscle-damage-markers-after-a-soccer-match
#9
Diego Marqués-Jiménez, Julio Calleja-González, Iñaki Arratibel-Imaz, Anne Delextrat, Fernando Uriarte, Nicolás Terrados
There is not enough evidence of positive effects of compression therapy on the recovery of soccer players after matches. Therefore, the objective was to evaluate the influence of different types of compression garments in reducing exercise-induced muscle damage (EIMD) during recovery after a friendly soccer match. Eighteen semi-professional soccer players (24 ± 4.07 years, 177 ± 5 cm; 71.8 ± 6.28 kg and 22.73 ± 1.81 BMI) participated in this study. A two-stage crossover design was chosen. Participants acted as controls in one match and were assigned to an experimental group (compression stockings group, full-leg compression group, shorts group) in the other match...
October 30, 2017: Research in Sports Medicine
https://www.readbyqxmd.com/read/29065533/leucine-enriched-essential-amino-acids-augment-muscle-glycogen-content-in-rats-seven-days-after-eccentric-contraction
#10
Hiroyuki Kato, Kyoko Miura, Katsuya Suzuki, Makoto Bannai
Eccentric contractions induce muscle damage, which impairs recovery of glycogen and adenosine tri-phosphate (ATP) content over several days. Leucine-enriched essential amino acids (LEAAs) enhance the recovery in muscles that are damaged after eccentric contractions. However, the role of LEAAs in this process remains unclear. We evaluated the content in glycogen and high energy phosphates molecules (phosphocreatine (PCr), adenosine di-phosphate (ADP) and ATP) in rats that were following electrically stimulated eccentric contractions...
October 23, 2017: Nutrients
https://www.readbyqxmd.com/read/29039798/the-effect-of-taurine-on-the-recovery-from-eccentric-exercise-induced-muscle-damage-in-males
#11
Yanita McLeay, Stephen Stannard, Matthew Barnes
Eccentric exercise is known to bring about microstructural damage to muscle, initiating an inflammatory cascade involving various reactive oxygen species. This, in turn, can significantly impair physical performance over subsequent days. Taurine, a powerful endogenous antioxidant, has previously been shown to have a beneficial effect on muscle damage markers and recovery when taken for a few days to several weeks prior to eccentric exercise. However, to date no studies have looked at the effects of supplementing over the days following eccentric exercise on performance recovery...
October 17, 2017: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/29038363/moderate-exercise-training-does-not-prevent-the-reduction-in-myocardial-l-type-ca-2-channels-protein-expression-at-obese-rats
#12
Vitor L da Silva, Ana P Lima-Leopoldo, Artur J T Ferron, Jóctan P Cordeiro, Paula P Freire, Dijon H S de Campos, Carlos R Padovani, Mário M Sugizaki, Antonio C Cicogna, André S Leopoldo
Authors have showed that obesity implicates cardiac dysfunction associated with myocardial L-type calcium channels (LTCCs) activity impairments, as well as moderate exercise training (MET) seems to be an important therapeutic tool. We tested the hypothesis that MET promotes improvements on LTCCS activity and protein expression at obesity induced by unsaturated high-fat diets, which could represent a protective effects against development of cardiovascular damage. Male Wistar rats were randomized in control (C, n = 40), which received a standard diet and obese (Ob; n = 40), which received high-fat diet...
October 2017: Physiological Reports
https://www.readbyqxmd.com/read/29037326/%C3%AE-hydroxy-%C3%AE-methylbutyrate-free-acid-supplementation-may-improve-recovery-and-muscle-adaptations-after-resistance-training-a-systematic-review
#13
REVIEW
Vagner R Silva, Felipe L Belozo, Thayana O Micheletti, Marcelo Conrado, Jeffrey R Stout, Gustavo D Pimentel, Adam M Gonzalez
β-Hydroxy-β-methylbutyrate free acid (HMB-FA) has been suggested to accelerate the regenerative capacity of skeletal muscle after high-intensity exercise and attenuate markers of skeletal muscle damage. Herein a systematic review on the use of HMB-FA supplementation as an ergogenic aid to improve measures of muscle recovery, performance, and hypertrophy after resistance training was conducted. This review was performed using the Preferred Reporting Items for Systematic Reviews and Meta-Analyses. We included randomized, double-blinded, placebo-controlled trials investigating the effects of HMB-FA supplementation in conjunction with resistance exercise in humans...
September 2017: Nutrition Research
https://www.readbyqxmd.com/read/29018242/nuclear-factor-erythroid-derived-2-like-2-activation-increases-exercise-endurance-capacity-via-redox-modulation-in-skeletal-muscles
#14
Sechang Oh, Shoichi Komine, Eiji Warabi, Kentaro Akiyama, Akiko Ishii, Kazunori Ishige, Yuji Mizokami, Keisuke Kuga, Masaki Horie, Yoshihiro Miwa, Takao Iwawaki, Masayuki Yamamoto, Junichi Shoda
Sulforaphane (SFN) plays an important role in preventing oxidative stress by activating the nuclear factor (erythroid derived 2)-like 2 (Nrf2) signalling pathway. SFN may improve exercise endurance capacity by counteracting oxidative stress-induced damage during exercise. We assessed running ability based on an exhaustive treadmill test (progressive-continuous all-out) and examined the expression of markers for oxidative stress and muscle damage. Twelve- to 13-week-old Male wild-type mice (Nrf2 (+/+)) and Nrf2-null mice (Nrf2 (-/-)) on C57BL/6J background were intraperitoneally injected with SFN or vehicle prior to the test...
October 10, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28981384/the-effects-of-a-korean-ginseng-ginst15-on-hypo-pituitary-adrenal-and-oxidative-activity-induced-by-intense-work-stress
#15
Shawn D Flanagan, William H DuPont, Lydia K Caldwell, Vincent H Hardesty, Emily C Barnhart, Matthew K Beeler, Emily M Post, Jeff S Volek, William J Kraemer
The effect of GINST15, an enzyme fermented ginseng supplement, on hormonal and inflammatory responses to physical stress in humans is unknown. The purpose of this investigation was to examine the constitutive and stress-induced effects of GINST15 supplement on hypo-pituitary-adrenal (HPA) and antioxidant activity in addition to muscle damage. Ten women (age: 38.7 ± 7.8 years; height: 163.81 ± 4.4 cm; body mass 76.0 ± 11.6 kg) and nine men (age: 41.2. ± 9.7 years; height: 177.4 ± 5...
October 5, 2017: Journal of Medicinal Food
https://www.readbyqxmd.com/read/28979160/preconditioning-by-light-load-eccentric-exercise-is-equally-effective-as-low-level-laser-therapy-in-attenuating-exercise-induced-muscle-damage-in-collegiate-men
#16
Samar Nausheen, Jamal Ali Moiz, Shahid Raza, Mohammad Yakub Shareef, Shahnawaz Anwer, Ahmad H Alghadir
BACKGROUND/OBJECTIVE: Previous studies have already reported an independent effect of light-load eccentric exercise (10% eccentric exercise contraction [EEC]) and low-level laser therapy (LLLT) as a protective measure against more strenuous eccentric exercise. However, the difference between these two interventions is largely unknown. Therefore, the present study aimed to compare the preconditioning effect of 10% EEC vs. LLLT on subjective, physiological, and biochemical markers of muscle damage in elbow flexors in collegiate men...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28974931/muscle-tendon-unit-properties-during-eccentric-exercise-correlate-with-the-creatine-kinase-response
#17
Kirsty M Hicks, Gladys L Onambele-Pearson, Keith Winwood, Christopher I Morse
Aim: The aim of this paper was to determine whether; (1) patella tendon stiffness, (2) the magnitude of vastus lateralis fascicle lengthening, and (3) eccentric torque correlate with markers of exercise induced muscle damage. Method: Combining dynamometry and ultrasonography, patella tendon properties and vastus lateralis architectural properties were measured pre and during the first of six sets of 12 maximal voluntary eccentric knee extensions. Maximal isometric torque loss and creatine kinase activity were measured pre-damage (-48 h), 48, 96, and 168 h post-damage as markers of exercise-induced muscle damage...
2017: Frontiers in Physiology
https://www.readbyqxmd.com/read/28966053/proteome-analysis-in-dystrophic-mdx-mouse-muscle-reveals-a-drastic-alteration-of-key-metabolic-and-contractile-proteins-after-chronic-exercise-and-the-potential-modulation-by-anti-oxidant-compounds
#18
Tania Gamberi, Tania Fiaschi, Elisa Valocchia, Alessandra Modesti, Paola Mantuano, Jean-Francois Rolland, Francesca Sanarica, Annamaria De Luca, Francesca Magherini
Weakness and fatigability are typical features of Duchenne muscular dystrophy patients and are aggravated in dystrophic mdx mice by chronic treadmill exercise. In the present study, we describe, the pattern of differentially abundant spots that is associated to the worsening of dystrophy phenotype induced by chronic exercise. Our proteomic analysis pointed out 34 protein spots with different abundance between sedentary and exercised mdx mice. These proteins belong mostly to glucose metabolism, energy production and sarcomere structure categories...
January 6, 2018: Journal of Proteomics
https://www.readbyqxmd.com/read/28965341/dynamic-expression-and-the-role-of-bdnf-in-exercise-induced-skeletal-muscle-regeneration
#19
Tao Yu, Yun Chang, Xiao Lin Gao, Han Li, Peng Zhao
Brain-derived neurotrophic factor (BDNF) is a myokine. However, its role in skeletal muscle has not been well elucidated. In this study, we aimed to investigate its expression profile in skeletal muscle following downhill running and to explore its functions. Male Sprague Dawley rats were assigned to sedentary and downhill running groups. Tail vein blood, total mRNA and protein from soleus muscle was obtained from rats at different time points post-exercise (1d, 3d, 5d, 7d and 14d). We found a significant elevation of BDNF mRNA level 5d and 7d post-exercise (p<0...
October 1, 2017: International Journal of Sports Medicine
https://www.readbyqxmd.com/read/28961497/irisin-protects-against-neuronal-injury-induced-by-oxygen-glucose-deprivation-in-part-depends-on-the-inhibition-of-ros-nlrp3-inflammatory-signaling-pathway
#20
Juan Peng, Xian Deng, Wei Huang, Ji-Hua Yu, Jian-Xiong Wang, Jie-Ping Wang, Shi-Bin Yang, Xi Liu, Li Wang, Yun Zhang, Xiang-Yu Zhou, Hui Yang, Yan-Zheng He, Fang-Yuan Xu
Recent studies found that irisin, a newly discovered skeletal muscle-derived myokine during exercise, is also synthesized in various tissues of different species and protects against neuronal injury in cerebral ischemia. The NOD-like receptor pyrin 3 (NLRP3) inflammasome play an important role in detecting cellular damage and mediating inflammatory responses to aseptic tissue injury during ischemic stroke. However, it is unclear whether irisin is involved in the regulation of NLRP3 inflammasome activation during ischemic stroke...
November 2017: Molecular Immunology
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