Strength and power training did not modify cardiovascular responses to aerobic exercise in elderly subjects

Strength and power training did not modify cardiovascular responses to aerobic exercise in elderly subjects

Autor Kanegusuku, Hélcio Google Scholar
Queiroz, Andréia Carneiro Carrenho Google Scholar
Chehuen, Marcel da Rocha Google Scholar
Costa, Luiz Augusto Riani Google Scholar
Wallerstein, Lilian França Google Scholar
Mello, Marco Tulio de Autor UNIFESP Google Scholar
Ugrinowitsch, Carlos Google Scholar
Forjaz, Cláudia Lúcia de Moraes Google Scholar
Instituição Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Resumo Resistance training increases muscle strength in older adults, decreasing the effort necessary for executing physical tasks, and reducing cardiovascular load during exercise. This hypothesis has been confirmed during strength-based activities, but not during aerobic-based activities. This study determined whether different resistance training regimens, strength training (ST, constant movement velocity) or power training (PT, concentric phase performed as fast as possible) can blunt the increase in cardiovascular load during an aerobic stimulus. Older adults (63.9 ± 0.7 years) were randomly allocated to: control (N = 11), ST (N = 13, twice a week, 70-90% 1-RM) and PT (N = 15, twice a week, 30-50% 1-RM) groups. Before and after 16 weeks, oxygen uptake (VO2), systolic blood pressure (SBP), heart rate (HR), and rate pressure product (RPP) were measured during a maximal treadmill test. Resting SBP and RPP were similarly reduced in all groups (combined data = -5.7 ± 1.2 and -5.0 ± 1.7%, respectively, P < 0.05). Maximal SBP, HR and RPP did not change. The increase in measured VO2, HR and RPP for the increment in estimated VO2 (absolute load) decreased similarly in all groups (combined data = -9.1 ± 2.6, -14.1 ± 3.9, -14.2 ± 3.0%, respectively, P < 0.05), while the increments in the cardiovascular variables for the increase in measured VO2 did not change. In elderly subjects, ST and PT did not blunt submaximal or maximal HR, SBP and RPP increases during the maximal exercise test, showing that they did not reduce cardiovascular stress during aerobic tasks.
Palavra-chave Aging
Resistance training
Maximal exercise test
Aerobic exercise
Idioma Inglês
Data de publicação 2011-09-01
Publicado em Brazilian Journal of Medical and Biological Research. Associação Brasileira de Divulgação Científica, v. 44, n. 9, p. 864-870, 2011.
ISSN 0100-879X (Sherpa/Romeo)
Publicador Associação Brasileira de Divulgação Científica
Extensão 864-870
Fonte http://dx.doi.org/10.1590/S0100-879X2011007500100
Direito de acesso Acesso aberto Open Access
Tipo Artigo
SciELO S0100-879X2011000900006 (estatísticas na SciELO)
Endereço permanente http://repositorio.unifesp.br/handle/11600/6595

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