Key result
15-second sprint interval training improved peak oxygen uptake by 12.1% and time to exhaustion by 16.2% at 9 weeks, demonstrating similar adaptations to a 30-second sprint program.
Why the study?
Does reduced-volume sprint interval training improve peak oxygen uptake and time to exhaustion in healthy active adults?
Population
25 healthy active adults (moderately-trained), including 18 males and 7 females.
Comparison
15-second training group consisting of 4-6 ×… vs 30-second training group consisting of 4-6 × 30…
Design
Other
Follow-up
9 weeks
Authors
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Shorter sprints may match longer ones for VO2 and endurance gains in active adults; leaves open optimal duration for critical power in prospective trials.
Does reduced-volume sprint interval training improve peak oxygen uptake and time to exhaustion in healthy active adults?
Absolute Event Rate: 12.1% vs 12.8%
p-value: p=<.05
A 50% reduction in sprint duration during interval training does not diminish overall cardiorespiratory and endurance adaptations over 9 weeks in moderately-trained individuals.
Yamagishi et al. (2017) studied Healthy active adults (n=25). 15-second sprint interval training vs. 30-second sprint interval training and no-training control was evaluated on Improvement in peak oxygen uptake (V˙O2peak) at 9 weeks (p=<.05). 15-second sprint interval training improved peak oxygen uptake by 12.1% and time to exhaustion by 16.2% at 9 weeks, demonstrating similar adaptations to a 30-second sprint program.
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