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"Exercise induced muscle damage"

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https://www.readbyqxmd.com/read/30485571/prolonged-depression-of-knee-extensor-torque-complexity-following-eccentric-exercise
#1
Jamie Pethick, Katherine Whiteaway, Samantha L Winter, Mark Burnley
NEW FINDINGS: What is the central question of this study? Does eccentric exercise leading to prolonged knee-extensor torque depression also result in a prolonged loss of knee-extensor torque complexity? What is the main finding and its importance? The recovery of the loss of torque complexity after eccentric exercise took 24 h, whereas after acute muscle fatigue it took 10 min. The depression of torque complexity after eccentric exercise was prolonged. ABSTRACT: Neuromuscular fatigue reduces the temporal structure, or complexity, of muscle torque output...
November 28, 2018: Experimental Physiology
https://www.readbyqxmd.com/read/30456534/cold-water-immersion-or-led-therapy-after-training-sessions-effects-on-exercise-induced-muscle-damage-and-performance-in-rats
#2
Vanessa Batista da Costa Santos, Julio Cesar Molina Correa, Priscila Chierotti, Giovana Stipp Ballarin, Dari de Oliveira Toginho Filho, Fábio Yuzo Nakamura, Solange de Paula Ramos
Cryotherapy and phototherapy have been suggested as recovery methods due to their anti-inflammatory effects. They may also induce mitochondrial biogenesis, thus favoring endurance training adaptation. The aim of this study was to evaluate the anti-inflammatory and ergogenic effects of phototherapy or cold water immersion (CWI) applied daily after exercise in rats. Thirty-five rats were divided into five groups: control (CO), non-exercised (CE), passive recovery (PR), cold water immersion (CWI), and LED therapy (LED)...
November 19, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/30410150/non-pharmacological-interventions-to-combat-exercise-induced-muscle-damage-a-little-natural-tax-on-work-out
#3
Muhammad Mustafa Qamar, Muhammad Shahid Javed, Muhammad Zahoor-Ul-Hassan Dogar, Ayesha Basharat
Debilitating pain, stiffness, tenderness, fatigue, impaired muscle function, lack of strength subsequent to exercise are not welcomed by those not accustomed to it. It may discourage an individual from participating in regular exercise. Numerou s ph armacological and non - pharmacological strategies have been used to alleviate symptoms of muscle soreness, muscle pain, improving muscle function, the range of motion and recovery time. Non-steroidal anti-inflammatory drugs are suggested to have a beneficial impact on muscle soreness, but fail to rejuvenate muscle weakness and range of motion coupled with muscle soreness...
November 2018: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/30399118/whole-body-vibration-as-a-warm-up-before-exercise-induced-muscle-damage-on-symptoms-of-delayed-onset-muscle-soreness-in-trained-subjects
#4
Ryan D Magoffin, Allen C Parcell, Robert D Hyldahl, Gilbert W Fellingham, J Tyson Hopkins, J Brent Feland
Magoffin, RD, Parcell, AC, Hyldahl, RD, Fellingham, GW, Hopkins, JT, and Feland, JB. Whole-body vibration as a warm-up before exercise-induced muscle damage on symptoms of delayed-onset muscle soreness in trained subjects. J Strength Cond Res XX(X): 000-000, 2018-There is no clear scientific evidence that whole-body vibration (WBV) used as a warm-up before performing eccentric exercise mitigates delayed-onset muscle soreness (DOMS) and speeds strength loss recovery. These benefits were observed primarily in nonresistance-trained individuals...
November 5, 2018: Journal of Strength and Conditioning Research
https://www.readbyqxmd.com/read/30390268/physical-exercise-for-muscle-atrophy
#5
Liang Shen, Xiangmin Meng, Zhongrong Zhang, Tianhui Wang
The most direct characteristic of muscle atrophy is reduction in muscle mass, which is due to increased protein degradation or reduced protein synthesis in skeletal muscle. The loss of muscle mass can directly affect the quality of daily life, prolong the recovery period, and become the main risk factor for chronic diseases. However, there is currently no effective way to prevent and treat this disease, and therefore it is imperative to explore effective therapeutic approaches for muscle atrophy. It is well known that physical exercise is important for maintaining good health and long-term adherence to exercise can reduce the risk of cardiovascular diseases, obesity, and diabetes...
2018: Advances in Experimental Medicine and Biology
https://www.readbyqxmd.com/read/30376452/can-exercise-induced-muscle-damage-be-related-to-changes-in-skin-temperature
#6
Willian da Silva, Álvaro S Machado, Mauren A Souza, Marcos R Kunzler, Jose I Priego-Quesada, Felipe P Carpes
OBJECTIVE: Measurement of skin temperature using infrared thermography has become popular in sports, and has been proposed as an indicator of exercise-induced muscle damage after exercise. However, the relationship between skin temperature and exercise-induced muscle damage is still unclear. Here we set out to investigate the relationship between skin temperature and exercise-induced muscle damage. APPROACH: Twenty untrained participants completed a protocol of exercise for calf muscles...
October 30, 2018: Physiological Measurement
https://www.readbyqxmd.com/read/30365470/cold-water-immersion-has-no-effect-on-muscle-stiffness-after-exercise-induced-muscle-damage
#7
João Pinto, Pedro Rocha, Rui Torres
OBJECTIVE: To analyze the effect of cryotherapy on muscle stiffness after exercise-induced muscle damage. DESIGN: A leg-to-leg comparison model. SETTING: University research laboratory. PARTICIPANTS: Thirty (30) untrained men (21.1 ± 1.6 years, 177.6 ± 6.4 cm, 75.9 ± 10.0 kg, and 15.9 ± 2.9% fat mass) with no history of lower-limb injury and no experience in resistance training. INTERVENTION: All participants underwent a plyometric exercise program to induce muscle damage; however, randomly, one leg was assigned to a treatment condition and subjected twice to cold-water immersion of the lower limb at 10°C (±1°C) for 10 minutes, while the other leg was assigned to control...
October 24, 2018: Clinical Journal of Sport Medicine: Official Journal of the Canadian Academy of Sport Medicine
https://www.readbyqxmd.com/read/30360698/the-stiffness-response-of-type-iia-fibres-after-eccentric-exercise-induced-muscle-damage-is-dependent-on-actn3-r577x-polymorphism
#8
Siacia Broos, Laurent Malisoux, Daniel Theisen, Ruud Van Thienen, Marc Francaux, Martine A Thomis, Louise Deldicque
The aim of the study was to determine the effect of α-actinin-3 (ACTN3) deficiency (XX) on muscle damage induced by an eccentric exercise bout. In this purpose, 4 RR and 4 XX individuals performed an intensive eccentric knee flexion exercise on an isokinetic dynamometer. Muscle biopsies, blood and pain scores were taken before and after the exercise to determine the extent of the exercise-induced damage and the effect of the ACTN3 R577X polymorphism. Maximal isometric strength of the quadriceps and single fibre properties were compared before and after the exercise...
October 26, 2018: European Journal of Sport Science
https://www.readbyqxmd.com/read/30350760/effects-of-pomegranate-supplementation-on-exercise-performance-and-post-exercise-recovery-in-healthy-adults-a-systematic-review
#9
Achraf Ammar, Stephen J Bailey, Hamdi Chtourou, Khaled Trabelsi, Mouna Turki, Anita Hökelmann, Nizar Souissi
The functional significance of pomegranate (POM) supplementation on physiological responses during and following exercise is currently unclear. This systematic review aimed (i) to evaluate the existing literature assessing the effects of POM supplementation on exercise performance and recovery; exercise-induced muscle damage, oxidative stress, inflammation; and cardiovascular function in healthy adults and (ii) to outline the experimental conditions in which POM supplementation is more or less likely to benefit exercise performance and/or recovery...
December 2018: British Journal of Nutrition
https://www.readbyqxmd.com/read/30337971/protective-role-of-vitamin-c-intake-on-muscle-damage-in-male-adolescents-performing-strenuous-physical-activity
#10
Shreef G N Gabrial, Marie-Christine R Shakib, Gamal N Gabrial
BACKGROUND: Strenuous non-regular exercise increases reactive oxygen species ROS level leading to an impaired balance between the endogenous antioxidant defence system and the free radicals production. Antioxidants intake can detoxify the peroxides produced during exercise, attenuating the inflammatory responses and therefore may prevent exercise-induced muscle damage. AIM: The purpose of this study was to determine the role of vitamin C intake in attenuating markers of muscle damage, oxidative stress and inflammatory responses in male adolescents performing the non-regular strenuous exercise...
September 25, 2018: Open Access Macedonian Journal of Medical Sciences
https://www.readbyqxmd.com/read/30335577/stimuli-and-sensors-that-initiate-skeletal-muscle-hypertrophy-following-resistance-exercise
#11
Henning Wackerhage, Brad J Schoenfeld, D Lee Hamilton, Maarit Lehti, Juha J Hulmi
One of the most striking adaptations to exercise is the skeletal muscle hypertrophy that occurs in response to resistance exercise. A large body of work shows that a mTORC1-mediated increase of muscle protein synthesis is the key, but not sole, mechanism by which resistance exercise causes muscle hypertrophy. Whilst much of the hypertrophy signaling cascade has been identified, the initiating, resistance exercise-induced and hypertrophy-stimulating stimuli have remained elusive. For the purpose of this review, we define an initiating, resistance exercise-induced and hypertrophy-stimulating signal as "hypertrophy stimulus", and the sensor of such a signal as "hypertrophy sensor"...
October 18, 2018: Journal of Applied Physiology
https://www.readbyqxmd.com/read/30328526/modulation-of-exercise-induced-muscular-damage-and-hyperalgesia-by-different-630-nm-doses-of-light-emitting-diode-therapy-ledt-in-rats
#12
Alan B Vasconcelos, Fernando K Nampo, Júlio C Molina, Miriam B Silva, Alan S Oliveira, Tarlyson R de Angelis, Amanda L Hasuda, Enilton A Camargo, Solange P Ramos
We compared the acute effects of different doses of 630 nm light-emitting diode therapy (LEDT) on skeletal muscle inflammation and hyperalgesia in rats submitted to exercise-induced muscle damage (EIMD). Wistar rats were divided into five experimental groups (n = 5-8/group): sedentary control (CON); exercise + passive recovery (PR); and exercise + LEDT (1.2 J/cm2 , 1.8 J; 4.2 J/cm2 , 6.3 J; 10.0 J/cm2 , 15 J). After 100 min of swimming, the rats in the LEDT groups were exposed to phototherapy on the triceps surae muscle...
October 17, 2018: Lasers in Medical Science
https://www.readbyqxmd.com/read/30327870/more-than-a-speed-gene-actn3-r577x-genotype-trainability-muscle-damage-and-the-risk-for-injuries
#13
REVIEW
Juan Del Coso, Danielle Hiam, Peter Houweling, Laura M Pérez, Nir Eynon, Alejandro Lucía
A common null polymorphism (rs1815739; R577X) in the gene that codes for α-actinin-3 (ACTN3) has been related to different aspects of exercise performance. Individuals who are homozygous for the X allele are unable to express the α-actinin-3 protein in the muscle as opposed to those with the RX or RR genotype. α-actinin-3 deficiency in the muscle does not result in any disease. However, the different ACTN3 genotypes can modify the functioning of skeletal muscle during exercise through structural, metabolic or signaling changes, as shown in both humans and in the mouse model...
October 16, 2018: European Journal of Applied Physiology
https://www.readbyqxmd.com/read/30304134/cryotherapy-biochemical-alterations-involved-in-reduction-of-damage-induced-by-exhaustive-exercise
#14
A B V Furtado, D D Hartmann, R P Martins, P C Rosa, I K da Silva, B S L Duarte, L U Signori, F A A Soares, G O Puntel
When exercises are done in intense or exhaustive modes, several acute biochemical mechanisms are triggered. The use of cryotherapy as cold-water immersion is largely used to accelerate the process of muscular recovery based on its anti-inflammatory and analgesic properties. The present study aimed to study the biochemical effects of cold-water immersion treatment in mice submitted to exercise-induced exhaustion. Swiss albino mice were divided into 4 treatment groups: control, cold-water immersion (CWI), swimming exhaustive protocol (SEP), and SEP+CWI...
October 4, 2018: Brazilian Journal of Medical and Biological Research, Revista Brasileira de Pesquisas Médicas e Biológicas
https://www.readbyqxmd.com/read/30298476/the-influence-of-caffeine-supplementation-on-resistance-exercise-a-review
#15
REVIEW
Jozo Grgic, Pavle Mikulic, Brad J Schoenfeld, David J Bishop, Zeljko Pedisic
This paper aims to critically evaluate and thoroughly discuss the evidence on the topic of caffeine supplementation when performing resistance exercise, as well as provide practical guidelines for the ingestion of caffeine prior to resistance exercise. Based on the current evidence, it seems that caffeine increases both maximal strength and muscular endurance. Furthermore, power appears to be enhanced with caffeine supplementation, although this effect might, to a certain extent, be caffeine dose- and external load-dependent...
October 8, 2018: Sports Medicine
https://www.readbyqxmd.com/read/30273919/muscle-fiber-conduction-velocity-of-the-vastus-medilais-and-lateralis-muscle-after-eccentric-exercise-induced-muscle-damage
#16
Razieh Nasrabadi, Zahra Izanloo, Ali Sharifnezad, Mohammad Reza Hamedinia, Nosratollah Hedayatpour
Change in muscle fiber conduction velocity (MFCV) has been reported after eccentric exercise induces muscle fiber damage, most likely due to a change in membrane permeability of the injured fiber. The extent of damage to the muscle fiber depends on the morphological and architectural characteristics of the muscle fibers. Morphological and architectural characteristics of the VMO muscle fibers are different from VL muscle. Thus, it is expected that eccentric exercise of quadriceps muscle results in a non-uniform fiber damage within the VMO and VL muscle and, as a consequence, non-uniform changes in membrane excitability and conduction velocity...
December 2018: Journal of Electromyography and Kinesiology
https://www.readbyqxmd.com/read/30257503/involvement-of-neutrophil-dynamics-and-function-in-exercise-induced-muscle-damage-and-delayed-onset-muscle-soreness-effect-of-hydrogen-bath
#17
Takuji Kawamura, Katsuhiko Suzuki, Masaki Takahashi, Miki Tomari, Reira Hara, Yuko Gando, Isao Muraoka
The purpose of this study was to investigate the involvement of neutrophil dynamics and function in exercise-induced muscle damage (EIMD) and delayed-onset muscle soreness (DOMS), and the effect of molecular hydrogen (H₂) intake on these parameters. Nine healthy and active young men performed H₂ and placebo bath trial in a crossover design. They carried out downhill running (-8% slope) for 30 min at a speed corresponding to 75~85% of peak oxygen uptake (VO₂peak). Subsequently, they repeated bathing for 20 min per day for one week...
September 25, 2018: Antioxidants (Basel, Switzerland)
https://www.readbyqxmd.com/read/30235812/the-effects-of-exercise-induced-muscle-damage-on-knee-joint-torque-and-balance-performance
#18
Nicole C Dabbs, Harish Chander
The purpose of this investigation is to determine the effects of exercise induced muscle damage (EIMD) on balance and knee joint torque. Thirteen males and females volunteered to participate in the study. Following a familiarization session, baseline measures were obtained for isometric torque measured during a maximal voluntary isometric contraction (MVIC) for knee flexors and extensors, and ankle dorsi-flexors and plantar-flexors. Additionally, balance performance was tested in double leg (DL), and right single leg (RSL) static and dynamic unstable stability was measured...
September 19, 2018: Sports
https://www.readbyqxmd.com/read/30222937/effects-of-myostatin-on-the-mechanical-properties-of-muscles-during-repeated-active-lengthening-in-the-mouse
#19
Danguole Satkunskiene, Aivaras Ratkevicius, Sigitas Kamandulis, Tomas Venckunas
The aim of the present study was to investigate how myostatin dysfunction affects fast and slow muscle stiffness and viscosity during severe repeated loading. METHODS: Isolated extensor digitorum longus (EDL) and soleus muscles of young adult female mice of the BEH (dysfunctional myostatin) and BEH+/+ (functional myostatin) strains were subjected to 100 subsequent contraction-stretching loading cycles during which contractile and mechanical properties were assessed. BEH mice exhibited greater exercise-induced muscle damage, although the effect was muscle- and age-dependent and limited to the early phases of simulated exercise...
September 17, 2018: Applied Physiology, Nutrition, and Metabolism, Physiologie Appliquée, Nutrition et Métabolisme
https://www.readbyqxmd.com/read/30177888/investigation-of-circulating-extracellular-vesicle-microrna-following-two-consecutive-bouts-of-muscle-damaging-exercise
#20
Jason A C Lovett, Peter J Durcan, Kathryn H Myburgh
Background: Extracellular vesicles (EVs) are nano-sized vesicles that are known to be powerful mediators of intercellular communication via their microRNA (miR) content. A paucity of information on EV-mediated communication arising from skeletal muscle (SkM) in response to exercise-induced muscle damage is present in the published literature. Lack of such information inhibits our understanding of muscle injury and repair processes. Aims: To assess circulating EV levels and selected miR content within them, in response to two consecutive bouts of muscle-damaging exercise...
2018: Frontiers in Physiology
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