Is eccentric exercise-induced torque decrease contraction type dependent?

Michaut, Anne; Pousson, Michel; Babault, Nicolas; Hoecke, Jacques Van

doi:10.1097/00005768-200206000-00016

Cited by 45 publications

(44 citation statements)

References 27 publications

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“…Perceived muscle soreness values are similar to those reported previously at 48 h following similar muscledamaging exercise (Marginson et al 2005;Paschalis et al 2005;Twist and Eston 2005). Isokinetic peak torque decreased following the plyometric protocol, with values decreasing to 84.5 ± 1.6% of baseline at 48 h and had recovered to 96.4 ± 2.02% at 168 h. The magnitude of isokinetic force loss observed in this study is consistent with those observed by previous studies (Byrne et al 2001;Michaut et al 2002).…”

Section: Discussionsupporting

confidence: 92%

The effect of exercise-induced muscle damage on perceived exertion and cycling endurance performance

Twist

Eston

2008

Eur J Appl Physiol

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This study evaluated the effects of exercise-induced muscle damage (EIMD) on fixed-load cycling and 5-min time-trial performance. Seven recreational athletes performed two submaximal fixed-load exercise bouts followed by a 5-min time-trial before, 48 and 168 h following 100 counter-movement jumps. Measurements of V(O)(2) heart rate, RER and blood lactate concentration remained unchanged during the fixed-load bouts following jumping exercise. However, VE and VE/VO2 increased (P < 0.05) at 48 h. RPE values were higher at 48 h as were the ratio of RPE:HR and RPE:VO2 (P < 0.05). In the time-trial, mean VO2 peak power output, mean power output, distance covered and post exercise blood lactate were lower at 48 h (P < 0.05). RPE remained unchanged between trials. These findings indicate that the ventilatory equivalent for oxygen and perceived exertion at submaximal work rates are increased 48 h following eccentric exercise. Furthermore, EIMD increases perceived exertion and impairs performance during a 5-min all-out effort.

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Section: Discussionsupporting

confidence: 92%

The effect of exercise-induced muscle damage on perceived exertion and cycling endurance performance

Twist

Eston

2008

Eur J Appl Physiol

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“…EE generally induces the strength development of fatigue, which has detrimental effects on performance (Michaut et al 2002;Hody et al 2011). One of the main mechanisms thought to be responsible for fatigue is a decrease in the release of Ca 2+ from the SR.…”

Section: Discussionmentioning

confidence: 99%

Effects of taurine supplementation following eccentric exercise in young adults

Silva

Tromm

Bom

et al. 2014

Appl. Physiol. Nutr. Metab.

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Abstract:The purpose of the present study was to investigate the effects of taurine supplementation on muscle performance, oxidative stress, and inflammation response after eccentric exercise (EE) in males. Twenty-one participants (mean age, 21 ± 6 years; weight, 78.2 ± 5 kg; height, 176 ± 7 cm) were selected and randomly divided into two groups: placebo (n = 10) and taurine (n = 11). Fourteen days after starting supplementation, subjects performed EE (3 sets until exhaustion, with EE of the elbow flexors on the Scott bench, 80% 1 repetition maximum (RM)). Blood samples were collected and muscle performance was measured on days 1, 14, 16, 18, and 21 after starting the supplements. Then, performance, muscle damage, oxidative stress, and inflammatory markers were analyzed. The taurine supplementation resulted in increased strength levels and thiol total content and decreased muscle soreness, lactate dehydrogenase level, creatine kinase activity, and oxidative damage (xylenol and protein carbonyl). Antioxidant enzymes (superoxide dismutase, catalase, and gluthatione peroxidase) and inflammatory markers (tumor necrosis factor, interleukin-1␤ (IL-1␤), and interleukin-10 (IL-10)) were not altered during the recovery period compared with the placebo group. The results suggest that taurine supplementation represents an important factor in improving performance and decreasing muscle damage and oxidative stress but does not decrease the inflammatory response after EE.Key words: taurine, eccentric exercise, physical performance, oxidative stress, inflammation, supplementation.Résumé : Cette étude se propose d'examiner les effets de la supplémentation en taurine sur la performance musculaire, le stress oxydatif et la réponse inflammatoire à la suite d'un exercice pliométrique chez des hommes. On répartit aléatoirement une sélection de 21 hommes (21 ± 6 ans, 78,2 ± 5 kg, 176 ± 7 cm) dans deux groupes : placebo (n = 10) et taurine (n = 11). Quatorze jours après le début de la supplémentation, les sujets effectuent sur un banc Scott trois séries d'exercices pliométriques des fléchisseurs du coude (80 % 1 RM) jusqu'à épuisement. On prélève des échantillons sanguins et on évalue la performance musculaire aux jours 1, 14, 16, 18 et 21 suivant le début de la supplémentation. Puis on analyse la performance, les lésions musculaires, le stress oxydatif et les marqueurs de l'inflammation. La supplémentation en taurine suscite une augmentation de la force et du contenu total en thiol ainsi qu'une diminution de la douleur musculaire, de la concentration de lactate déshy-drogénase, de l'activité de la créatine kinase et des lésions oxydatives (xylénol et protéine carbonylée). Pendant la période de récupération, on n'observe dans les groupes supplémentés aucune modification de l'activité des enzymes antioxydantes (superoxyde dismutase, catalase et glutathion peroxydase) et des marqueurs de l'inflammation (facteur de nécrose tumorale, interleukine-1␤ (IL-1␤) et interleukine-10 (IL-10)) comparativement au groupe placebo. D'après ces observa...

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“…Testing was performed using hard deceleration cushion. Maximal flexion and extension of the knee was first measured in concentric action at slow (60°/second) and fast (210°/second) velocities, and then in eccentric action at a slow velocity only (60°/second) (24). The motion ranged from 80°of knee flexion to full extension.…”

Section: Methodsmentioning

confidence: 99%

Exercise in waist‐high warm water decreases pain and improves health‐related quality of life and strength in the lower extremities in women with fibromyalgia

Gusi¹,

Tomás-Carús²,

Häkkinen³

et al. 2006

Arthritis & Rheumatism

138

105

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Objective. To evaluate the short-and long-term efficacy of exercise therapy in a warm, waist-high pool in women with fibromyalgia. Methods. Thirty-four women (mean ؎ SD tender points 17 ؎ 1) were randomly assigned to either an exercise group (n ‫؍‬ 17) to perform 3 weekly sessions of training including aerobic, proprioceptive, and strengthening exercises during 12 weeks, or to a control group (n ‫؍‬ 17). Maximal unilateral isokinetic strength was measured in the knee extensors and flexors in concentric and eccentric actions at 60°/second and 210°/second, and in the shoulder abductors and adductors in concentric contractions. Health-related quality of life (HRQOL) was assessed using the EQ-5D questionnaire; pain was assessed on a visual analog scale. All were measured at baseline, posttreatment, and after 6 months. Results. The strength of the knee extensors in concentric actions increased by 20% in both limbs after the training period, and these improvements were maintained after the de-training period in the exercise group. The strength of other muscle actions measured did not change. HRQOL improved by 93% (P ‫؍‬ 0.007) and pain was reduced by 29% (P ‫؍‬ 0.012) in the exercise group during the training, but pain returned close to the pretraining level during the subsequent de-training. However, there were no changes in the control group during the entire period. Conclusion. The therapy relieved pain and improved HRQOL and muscle strength in the lower limbs at low velocity in patients with initial low muscle strength and high number of tender points. Most of these improvements were maintained long term.

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Is eccentric exercise-induced torque decrease contraction type dependent?

Cited by 45 publications

References 27 publications

The effect of exercise-induced muscle damage on perceived exertion and cycling endurance performance

The effect of exercise-induced muscle damage on perceived exertion and cycling endurance performance

Effects of taurine supplementation following eccentric exercise in young adults

Exercise in waist‐high warm water decreases pain and improves health‐related quality of life and strength in the lower extremities in women with fibromyalgia

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