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Author Ferri, Alessandra ♦ Narici, Marco ♦ Grassi, Bru ♦ Pousson, Michel
Source SpringerLink
Content type Text
Publisher Springer-Verlag
File Format PDF
Copyright Year ©2006
Language English
Subject Keyword Ageing ♦ Heavy-resistance training session ♦ Muscle damage ♦ Muscle recovery
Abstract Ageing is associated with an increased susceptibility to muscle damage but little is known on how this affects muscle recovery after exercise. Hence, this study is aiming at investigating the effects of a heavy-resistance training session of neuromuscular recovery of the calf muscles of a group of elderly men aged >65. Maximal isometric and isokinetic torque, muscle voluntary activation (VA) capacity, surface electromyographic activity (EMG), peak-to-peak amplitude of action potentials associated with twitch responses of plantar flexors were evaluated before and 5 min (post1), 24 h (post2) and 48 h (post3) after 10 sets of 10 repetitions of a calf raise exercise performed at an intensity of 70% of the individual, one repetition maximum. Blood samples were taken before and 1, 48, 96 and 144 h after the training session and assayed for serum creatine kinase (CK), lactate dehydrogenase (LDH) and myoglobin (Mb). Peak torque during eccentric and concentric (120° s−1) contractions and twitch parameters were significantly reduced at post1, and recovered completely at post2. No significant changes were found in integrated EMG, M-wave amplitudes and VA throughout the entire test period. CK and LDH concentrations reached peak values 48 h after the exercise session and returned to the pre-exercise values 96 h after the training session. Serum Mb level increased by 73.2% 1 h after exercise and recovered at 48 h. The reduction in peak torque following a strength training session in an elderly population could be explained mainly by fatigue of peripheral origin. After 24 h the elders recovered completely their capacities of strength production, despite muscle damage being still evident 48 h after the strength training session.
ISSN 14396319
Age Range 18 to 22 years ♦ above 22 year
Educational Use Research
Education Level UG and PG
Learning Resource Type Article
Publisher Date 2006-03-30
Publisher Place Berlin/Heidelberg
e-ISSN 14396327
Journal European Journal of Applied Physiology
Volume Number 97
Issue Number 3
Page Count 8
Starting Page 272
Ending Page 279

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Source: SpringerLink