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Acute Oxygen Consumption Response to Fast Start High-Intensity Intermittent Exercise.

ABSTRACT: The current investigation compared the acute oxygen consumption (VO₂) response of two high-intensity interval exercises (HIIE), fast start (FSHIIE), and steady power (SPHIIE), which matched w prime (W') depletion. Eight cyclists completed an incremental max test and a three-minute all-out test (3MT) to determine maximal oxygen consumption (VO_2max), critical power (CP), and W'. HIIE sessions consisted of 3 X 4 min intervals interspersed by 3 min of active recovery, with W' depleted by 60% (W'target) within each working interval. SPHIIE depleted the W'target consistently throughout the 3 min intervals, while FSHIIE depleted the W'target by 50% within the first minute, with the remaining 50% depleted evenly across the remainder of the interval. The paired samples t-test revealed no differences in the percentage of training time spent above 90% of VO_2max (PT ≥ 90% VO_2max) between SPHIIE and FSHIIE with an average of 25.20% and 26.07%, respectively. Pairwise comparisons indicated a difference between minute 1 peak VO₂, minute 2, and minute 3, while no differences were present between minutes 2 and 3. The results suggest that when HIIE formats are matched based on W' expenditure, there are no differences in PT ≥ 90% VO_2max or peak VO₂ during each interval.

SUBMITTER: Miller P

PROVIDER: S-EPMC10747366 | biostudies-literature | 2023 Dec

REPOSITORIES: biostudies-literature

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Acute Oxygen Consumption Response to Fast Start High-Intensity Intermittent Exercise.

Miller Payton P Perez Noah N Farrell John W JW

Sports (Basel, Switzerland) 20231201 12

The current investigation compared the acute oxygen consumption (VO<sub>2</sub>) response of two high-intensity interval exercises (HIIE), fast start (FSHIIE), and steady power (SPHIIE), which matched w prime (W') depletion. Eight cyclists completed an incremental max test and a three-minute all-out test (3MT) to determine maximal oxygen consumption (VO<sub>2max</sub>), critical power (CP), and W'. HIIE sessions consisted of 3 X 4 min intervals interspersed by 3 min of active recovery, with W' d ...[more]

PMID: 38133105

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Dataset Information

Acute Oxygen Consumption Response to Fast Start High-Intensity Intermittent Exercise.

Publications

Acute Oxygen Consumption Response to Fast Start High-Intensity Intermittent Exercise.

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