Examining Matched Acute Physiological Responses to Various Modes of Exercise in Individuals Who Are Overweight

• Autores: James E. Clark
• Localización: Journal of strength and conditioning research: the research journal of the NSCA, ISSN 1064-8011, Vol. 24, Nº. 8, 2010, págs. 2239-2248
• Idioma: inglés
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• Resumen

  • The purpose of this study is to perform a match comparison of 3 different exercise programs: traditional continuous endurance training (ET); mixed-intensity interval ET (MI-ET); and circuit-interval resistance training (CRT) programs, to determine which of the 3 programs provides greater benefit of exercise in individuals who are overweight. This benefit of training is measured in Caloric expenditure per minute of exercise (kcal·min-1), along with acute cardiovascular responses (average and maximal heart rate [HR], b·min-1) and time of training spent within a favorable HR training zone for the exerciser. Thirteen (13) individuals, 7 men and 6 women, average of 35 ± 2.3 years of age, who are overweight, average body weight of 79.8 ± 5.1 kg with a body mass index of 35 ± 1, were recruited from a local fitness center and were then randomly assigned to an order to complete 1 session of each of the 3 modes of exercise. There was no difference between program groups (MI-ET, CRT, and ET programs) for average HR response, p > 0.05; however, the individuals while performing the MI-ET program spent a greater percent of training time within a favorable training zone than the CRT or ET programs (p < 0.01). Additionally, the MI-ET and CRT programs produced greater Caloric expenditure (kcal·min-1) than the ET program (p < 0.01) with no statistical difference between the MI-ET and CRT programs (p > 0.05). Although the CRT produces the greatest overall Caloric expenditure, the MI-ET program produces measures that provided a significantly greater benefit of exercise for the 3 programs of interest.