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

Author 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
Institution Universidade de São Paulo (USP)
Universidade Federal de São Paulo (UNIFESP)
Abstract 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.
Keywords Aging
Resistance training
Maximal exercise test
Aerobic exercise
Language English
Date 2011-09-01
Published in 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)
Publisher Associação Brasileira de Divulgação Científica
Extent 864-870
Access rights Open access Open Access
Type Article
SciELO ID S0100-879X2011000900006 (statistics in SciELO)

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