Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity

Felipe Romano Damas Nogueira,1 Cleiton Augusto Libardi,1,2 Felipe Cassaro Vechin,1,2 Manoel Emílio Lixandrão,1 Ricardo Paes de Barros Berton,1 Thiago Mattos Frota de Souza,1 Miguel Soares Conceição,1 Claudia Regina Cavaglieri,1 Mara Patricia Traina Chacon-...

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Autores principales:	Nogueira FR, Libardi CA, Vechin FC, Lixandrão ME, Berton RP, de Souza TM, Conceição MS, Cavaglieri CR, Chacon-Mikahil MP
Formato:	article
Lenguaje:	EN
Publicado:	Dove Medical Press 2013
Materias:	Aging sarcopenia concentric contraction isometric contraction eccentric contraction. Geriatrics RC952-954.6
Acceso en línea:	https://doaj.org/article/f90acca3dd0747d48ec18e9703cb0974
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spelling	oai:doaj.org-article:f90acca3dd0747d48ec18e9703cb09742021-12-02T00:58:34ZComparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity1178-1998https://doaj.org/article/f90acca3dd0747d48ec18e9703cb09742013-04-01T00:00:00Zhttps://www.dovepress.com/comparison-of-maximal-muscle-strength-of-elbow-flexors-and-knee-extens-peer-reviewed-article-CIAhttps://doaj.org/toc/1178-1998Felipe Romano Damas Nogueira,1 Cleiton Augusto Libardi,1,2 Felipe Cassaro Vechin,1,2 Manoel Emílio Lixandrão,1 Ricardo Paes de Barros Berton,1 Thiago Mattos Frota de Souza,1 Miguel Soares Conceição,1 Claudia Regina Cavaglieri,1 Mara Patricia Traina Chacon-Mikahil11School of Physical Education, State University of Campinas, 2School of Physical Education and Sport, University of São Paulo, São Paulo, BrazilBackground: Aging promotes neuromuscular loss, significantly reducing muscle strength. The magnitude of loss of strength seems to be different between the limbs, probably because of differences in activities of daily living (ADL). Therefore, the present study compared the muscle strength of the elbow flexors and knee extensors in younger (n = 7, mean age 23.3 ± 1.2 years) and older (n = 5, mean age 61.8 ± 2.6 years) men matched by ADL level.Methods: The study participants performed maximal concentric, isometric, and eccentric contractions of the elbow flexors and knee extensors using an isokinetic dynamometer following a crossover study design. Changes in the dependent variables were compared using mixed model analysis (limb versus age).Results: The main results demonstrated that concentric, eccentric, and mean contraction torques for knee extensors were significantly (P < 0.05) higher for younger men than for elderly men. On the other hand, no statistically significant difference (P > 0.05) was found in concentric, isometric, eccentric, and mean torques for elbow flexors between younger and older individuals.Conclusion: These results show that elbow flexors maintain better strength than knee extensors through aging, even when comparing individuals with similar ADL levels.Keywords: aging, sarcopenia, concentric contraction, isometric contraction, eccentric contractionNogueira FRLibardi CAVechin FCLixandrão MEBerton RPde Souza TMConceição MSCavaglieri CRChacon-Mikahil MPDove Medical PressarticleAgingsarcopeniaconcentric contractionisometric contractioneccentric contraction.GeriatricsRC952-954.6ENClinical Interventions in Aging, Vol Volume 8, Pp 401-407 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Aging sarcopenia concentric contraction isometric contraction eccentric contraction. Geriatrics RC952-954.6
spellingShingle	Aging sarcopenia concentric contraction isometric contraction eccentric contraction. Geriatrics RC952-954.6 Nogueira FR Libardi CA Vechin FC Lixandrão ME Berton RP de Souza TM Conceição MS Cavaglieri CR Chacon-Mikahil MP Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
description	Felipe Romano Damas Nogueira,1 Cleiton Augusto Libardi,1,2 Felipe Cassaro Vechin,1,2 Manoel Emílio Lixandrão,1 Ricardo Paes de Barros Berton,1 Thiago Mattos Frota de Souza,1 Miguel Soares Conceição,1 Claudia Regina Cavaglieri,1 Mara Patricia Traina Chacon-Mikahil11School of Physical Education, State University of Campinas, 2School of Physical Education and Sport, University of São Paulo, São Paulo, BrazilBackground: Aging promotes neuromuscular loss, significantly reducing muscle strength. The magnitude of loss of strength seems to be different between the limbs, probably because of differences in activities of daily living (ADL). Therefore, the present study compared the muscle strength of the elbow flexors and knee extensors in younger (n = 7, mean age 23.3 ± 1.2 years) and older (n = 5, mean age 61.8 ± 2.6 years) men matched by ADL level.Methods: The study participants performed maximal concentric, isometric, and eccentric contractions of the elbow flexors and knee extensors using an isokinetic dynamometer following a crossover study design. Changes in the dependent variables were compared using mixed model analysis (limb versus age).Results: The main results demonstrated that concentric, eccentric, and mean contraction torques for knee extensors were significantly (P < 0.05) higher for younger men than for elderly men. On the other hand, no statistically significant difference (P > 0.05) was found in concentric, isometric, eccentric, and mean torques for elbow flexors between younger and older individuals.Conclusion: These results show that elbow flexors maintain better strength than knee extensors through aging, even when comparing individuals with similar ADL levels.Keywords: aging, sarcopenia, concentric contraction, isometric contraction, eccentric contraction
format	article
author	Nogueira FR Libardi CA Vechin FC Lixandrão ME Berton RP de Souza TM Conceição MS Cavaglieri CR Chacon-Mikahil MP
author_facet	Nogueira FR Libardi CA Vechin FC Lixandrão ME Berton RP de Souza TM Conceição MS Cavaglieri CR Chacon-Mikahil MP
author_sort	Nogueira FR
title	Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
title_short	Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
title_full	Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
title_fullStr	Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
title_full_unstemmed	Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
title_sort	comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity
publisher	Dove Medical Press
publishDate	2013
url	https://doaj.org/article/f90acca3dd0747d48ec18e9703cb0974
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Comparison of maximal muscle strength of elbow flexors and knee extensors between younger and older men with the same level of daily activity

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