caa a22 4500 467941882 CHVBK 20180406153015.0 cr unu---uuuuu 170328e20060601xx s 000 0 eng 10.1007/s00421-006-0168-y doi (NATIONALLICENCE)springer-10.1007/s00421-006-0168-y Neuromuscular recovery after a strength training session in elderly people [Elektronische Daten] [Alessandra Ferri, Marco Narici, Bruno Grassi, Michel Pousson] 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 5min (post1), 24h (post2) and 48h (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 144h 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 48h after the exercise session and returned to the pre-exercise values 96h after the training session. Serum Mb level increased by 73.2% 1h after exercise and recovered at 48h. The reduction in peak torque following a strength training session in an elderly population could be explained mainly by fatigue of peripheral origin. After 24h the elders recovered completely their capacities of strength production, despite muscle damage being still evident 48h after the strength training session. Springer-Verlag, 2006 Ageing nationallicence Heavy-resistance training session nationallicence Muscle damage nationallicence Muscle recovery nationallicence Ferri Alessandra Department of Experimental, Environmental Medicine and Medical Biotechnologies, University of Milano-Bicocca, via Cadore 48, Monza (MI), Italy aut Narici Marco Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University (MMU), Cheshire, Hassal Road, ST7 2HL, Alsager, UK aut Grassi Bruno Department of Sciences and Biomedical Technologies, University of Milan, via Flli Cervi 93, 20090, Segrate (MI), Italy aut Pousson Michel Inserm Erm 207 Plasticity-Motricity, Faculty of Sport Science, University of Burgundy, BP 27877, 21078, Dijon Cedex, France aut European Journal of Applied Physiology Springer-Verlag 97/3(2006-06-01), 272-279 1439-6319 97:3<272 2006 97 421 https://doi.org/10.1007/s00421-006-0168-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00421-006-0168-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Ferri Alessandra Department of Experimental, Environmental Medicine and Medical Biotechnologies, University of Milano-Bicocca, via Cadore 48, Monza (MI), Italy aut NATIONALLICENCE 700 1- Narici Marco Institute for Biophysical and Clinical Research into Human Movement, Manchester Metropolitan University (MMU), Cheshire, Hassal Road, ST7 2HL, Alsager, UK aut NATIONALLICENCE 700 1- Grassi Bruno Department of Sciences and Biomedical Technologies, University of Milan, via Flli Cervi 93, 20090, Segrate (MI), Italy aut NATIONALLICENCE 700 1- Pousson Michel Inserm Erm 207 Plasticity-Motricity, Faculty of Sport Science, University of Burgundy, BP 27877, 21078, Dijon Cedex, France aut NATIONALLICENCE 773 0- European Journal of Applied Physiology Springer-Verlag 97/3(2006-06-01), 272-279 1439-6319 97:3<272 2006 97 421 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer