Re-examination of the contribution of substrates to energy expenditure during high-intensity intermittent exercise in endurance athletes.

ABSTRACT:

Background

It has been believed that the contribution of fat oxidation to total energy expenditure is becoming negligible at higher exercise intensities (about 85% VO_2max). The aim of the present study was to examine the changes in substrate oxidation during high-intensity interval exercise in young adult men.

Methods

A total of 18 healthy well-trained (aged 19.60 ± 0.54 years, BMI = 22.19 ± 0.64 kg/m², n = 10) and untrained (aged 20.25 ± 0.41 years, BMI = 22.78 ± 0.38 kg/m², n = 8) young men volunteered to participate in this study. After an overnight fast, subjects were tested on a cycle ergometer and completed six 4-min bouts of cycling (at ∼80% VO_2max) with 2 min of rests between intervals. Energy expenditure and

SUBMITTER: Aslankeser Z 

PROVIDER: S-EPMC5591632 | biostudies-literature | 2017

REPOSITORIES: biostudies-literature