Repeated sprint training and continuous endurance training provoked comparable improvements in VO2 kinetics and exercise performance (P<0.05), with RST being more time-efficient.
RCT (n=23)
Randomly assigned
Does repeated sprint training improve Vo2 kinetics and exercise performance compared to continuous endurance training in recreationally active subjects?
Repeated sprint training is a more time-efficient approach than continuous endurance training to elicit comparable improvements in Vo2 kinetics and exercise performance.
p-value: p=<0.05
The purpose of this study was to test the hypothesis that Vo2 kinetics would be speeded to a greater extent following repeated sprint training (RST), compared with continuous endurance training (ET), in the transition from moderate- to severe-intensity exercise. Twenty-three recreationally active subjects were randomly assigned to complete six sessions of ET (60-110 min of moderate-intensity cycling) or RST (four to seven 30-s all-out Wingate tests) over a 2-wk period. Subjects completed three identical work-to-work cycling exercise tests before and after the intervention period, consisting of baseline cycling at 20 W followed by sequential step increments to moderate- and severe-intensity work rates. The severe-intensity bout was continued to exhaustion on one occasion and was followed by a 60-s all-out sprint on another occasion. Phase II pulmonary Vo2 kinetics were speeded by a similar magnitude in both the lower (ET pre, 28 ± 4; ET post, 22 ± 4 s; RST pre, 25 ± 8; RST post, 20 ± 7 s) and upper (ET pre, 50 ± 10; ET post, 39 ± 11 s; RST pre, 54 ± 7; RST post, 40 ± 11 s) steps of the work-to-work test following ET and RST (P < 0.05). The tolerable duration of exercise and the total amount of sprint work completed in the exercise performance test were also similarly enhanced by ET and RST (P < 0.05). Therefore, ET and RST provoked comparable improvements in Vo2 kinetics and exercise performance in the transition from an elevated baseline work rate, with RST being a more time-efficient approach to elicit these adaptations.
Boit et al. (Fri,) conducted a rct in Recreationally active (n=23). Repeated sprint training (RST) vs. Continuous endurance training (ET) (60-110 min of moderate-intensity cycling) was evaluated on Phase II pulmonary Vo2 kinetics in the transition from moderate- to severe-intensity exercise (p=<0.05). Repeated sprint training and continuous endurance training provoked comparable improvements in VO2 kinetics and exercise performance (P<0.05), with RST being more time-efficient.