Abstract
IntroductionHigh-intensity interval training (HIIT) provides notable physiological benefits and is generally well-tolerated across modalities and populations. This study investigated how exercise autonomy support impacts psychological responses to exercise. MethodsTwenty-nine participants completed three HIIT trials: Conventional-HIIT with 60-sec work segments, Varied-HIIT with a mix of 30, 60, 90, & 120-sec segments, and Autonomous-HIIT with self-selected 30, 60, 90, & 120-sec segments. Affective valence, enjoyment, and intention were measured. ResultsAffective valence during exercise was not different between trials (p > 0.05) but enjoyment during exercise was higher for Autonomous-HIIT (p < 0.05). Enjoyment and intention measured post-exercise were greater for Autonomous-HIIT than Varied-HIIT (p < 0.05). ConclusionAutonomous HIIT produced more desirable responses than varied and traditional HIIT sessions. These data suggest that HIIT sessions utilizing self-selected interval durations can produce more positive responses, which provides the basis for recommending autonomy within HIIT exercise.
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