Stork Matthew J, Santos Alexandre, Locke Sean R, Little Jonathan P, Jung Mary E
School of Health and Exercise Sciences, The University of British Columbia, Kelowna, BC, V1V 1V7, Canada.
Department of Kinesiology, Brock University, St. Catharines, ON, L2S 3A1, Canada.
Int J Behav Med. 2025 Apr;32(2):157-167. doi: 10.1007/s12529-023-10224-8. Epub 2023 Oct 12.
In-task affective responses to moderate-intensity continuous exercise training (MICT) have been shown to predict future physical activity behavior. However, limited research has investigated whether this affect-behavior relationship is similar for high-intensity interval training (HIIT) and whether it holds true over the longer term. This study aims to determine (1) if in-task affect during 2 weeks of supervised MICT and HIIT predicted changes to unsupervised moderate-to-vigorous physical activity (MVPA) behavior 12 months post-intervention and (2) if this predictive relationship was moderated by exercise type (MICT vs. HIIT).
Ninety-nine adults (69.7% female; 50.9 ± 9.4 years) who were low active and overweight were randomized to 2 weeks of exercise training of MICT (n = 52) or HIIT (n = 47), followed by 12 months of accelerometry-assessed free-living MVPA.
The pooled moderation model was not significant, F(3, 94) = 2.54, p = .07 (R = 0.085), with a non-significant group by affect interaction (p = .06). The conditional effect for MICT was significant (B = 17.27, t = 2.17, p = .03), suggesting that 12-month change in MVPA increased by 17.27 min/week for every one-point increase in in-task affect. The conditional effect for HIIT was not significant (p = .85), suggesting that in-task affect was not predictive of 12-month change in MVPA.
The current findings raise important questions about whether the affect-behavior relationship may vary depending on exercise type. For HIIT-based exercise in particular, additional psychological constructs beyond in-task affect should be considered when attempting to predict future physical activity behavior.
对中等强度持续运动训练（MICT）的任务中情感反应已被证明可预测未来的身体活动行为。然而，仅有有限的研究调查了这种情感与行为的关系在高强度间歇训练（HIIT）中是否相似，以及在更长时期内是否依然成立。本研究旨在确定：（1）在为期2周的有监督的MICT和HIIT训练期间的任务中情感是否能预测干预后12个月无监督的中等至剧烈身体活动（MVPA）行为的变化；（2）这种预测关系是否受运动类型（MICT与HIIT）的调节。
99名低活动水平且超重的成年人（69.7%为女性；年龄50.9±9.4岁）被随机分为两组，分别进行为期2周的MICT（n = 52）或HIIT（n = 47）运动训练，随后进行12个月的通过加速度计评估的自由生活MVPA。
合并的调节模型不显著，F(3, 94) = 2.54，p = 0.07（R = 0.085），情感与组间的交互作用不显著（p = 0.06）。MICT的条件效应显著（B = 17.27，t = 2.17，p = 0.03），表明任务中情感每增加1分，MVPA的12个月变化每周增加17.27分钟。HIIT的条件效应不显著（p = 0.85），表明任务中情感不能预测MVPA的12个月变化。
当前研究结果引发了关于情感与行为关系是否可能因运动类型而异的重要问题。特别是对于基于HIIT的运动，在试图预测未来身体活动行为时，除任务中情感外还应考虑其他心理因素。
