Acute Effects of Water-Based Concurrent Training Intrasession Exercise Sequences on Energy Expenditure in Young Women

Background: To compare the acute effects of water-based aerobic-resistance and resistance-aerobic concurrent training (CT) sessions on energy expenditure (EE) during and postexercise in young women. Methods: Nine active women (24 [3] y; 60 [5] kg) completed 4 sessions: (1) familiarization, (2) aquatic maximal test to determine the heart rate corresponding to the anaerobic threshold, (3) CT protocol with aerobic-resistance sequence, and (4) CT protocol with resistance-aerobic sequence. Both protocols started and ended with the participants in the supine position for 30 minutes to perform resting and postexercise oxygen consumption measurements. The water-based resistance protocol comprised 4 sets of 15 seconds at maximal velocity, and the water-based aerobic protocol was performed at a continuous intensity (heart rate corresponding to the anaerobic threshold). EE measurements were calculated based on oxygen consumption and the corresponding caloric equivalent. Paired t test was used to compare the EE values between the water-based CT intrasession exercise sequences (alpha =.05). Results: There was no difference between the water-based aerobic-resistance and resistance-aerobic in total EE (330.78 vs 329.56 kcal; P =.96), EE per minute (7.35 vs 7.32 kcal.min(-1); P =.96), and postexercise EE (63.65 vs 59.92 kcal; P =.50). Conclusions: The intrasession exercise sequence during water-based CT had no influence on the EE in young women.