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Abstract
Purpose: The purpose of this study is to investigate whether variety and choice affect adolescents’ motivation in high-intensity interval training during physical education. Method: We conducted a four-armed randomized controlled trial involving 206 students from one school (aged 12.6 ± 0.5 years), who participated in a 6-week high-intensity interval training program, delivered twice weekly during physical education. Students were randomized by class to the low- or high-varieties, choice, or control (standard warm-up) conditions. Results: Group-by-time effects resulted for the low- and high-variety groups on intrinsic motivation (d = 0.43, 0.47) compared with the control group; high-variety and choice groups had higher enjoyment than the low-variety group, and the high-variety group showed greater positive affect than low-variety and choice groups (d = 0.68, 0.61). Low-variety and choice groups had significant improvements for cardiorespiratory and lower body muscular fitness (respectively). Conclusion: Offering variety or choice in high-intensity interval training during physical education may enhance intrinsic motivation, enjoyment, positive affect, and/or fitness outcomes in adolescents.
Published Version
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