METABOLIC RESPONSES TO HIGH-SPEED TOTAL-BODY WORKOUTS
Journal Title: Medicina Sportiva - Year 2014, Vol 18, Issue 4
Abstract
Introduction: A male and female subject performed a high-speed total body circuit-based workout on an Impulse (Impulse Training Systems; Newnan, GA) exercise machine for the purpose of examining their metabolic responses to this training modality.Methods: Workouts occurred within a whole room calorimeter and entailed three circuits of ten exercises. Each subject’s exercise repetitions were done against 4.5 kg of resistance. Per exercise, repetitions were done as rapidly as possible for 30 and 60 seconds for unilateral and bilateral movements respectively, with no rest between different exercises. Changes in O2, CO2 and heat were measured before, during and after workouts. Metabolic data were used to calculate energy costs, substrate utilization and the net volume of work.Results: Net volumes of work done by our male and female subjects were 8124.5 and 6177.6 kilojoules respectively. Net energy costs for our male and female subjects were 405.5 and 339.7 kilocalories respectively. Despite the modest resistance employed, our energy expenditures are comparable to those from other resistive exercise studies, some of which entailed longer workouts and higher absolute loads. As compared to the male, our female subject had comparatively higher lipolysis during and after the workout, which may be due to several factors that include inter-gender differences in intramuscular triglyceride distribution and hormonal activity.Conclusions: Despite its novelty and modest loads, it appears a circuit weight training bout on the Impulse elicits high energy costs and a relatively higher degree of post-exercise lipolysis in women.
Authors and Affiliations
Steve W. Davison, Bill V. Rumpler, Amanda G. Barbosa, Evelyn V. Gutierrez, John F. Caruso
Keywords
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- DOI 10.5604/17342260.1133110
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