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Can In-Task Affect During Interval and Continuous Exercise Predict 12-Month Physical Activity Behavior? Findings from

Matthew J Stork1, Alexandre Santos1, Sean R Locke2

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International Journal of Behavioral Medicine
|October 12, 2023
PubMed
Summary
This summary is machine-generated.

In-task affect predicts future physical activity for moderate-intensity continuous training (MICT) but not high-intensity interval training (HIIT). This suggests exercise type influences the affect-behavior relationship over the long term.

Keywords:
Affective responsesCore affectHedonic theoryPhysical activity behaviorPrediabetes

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Area of Science:

  • Exercise physiology
  • Behavioral science
  • Psychology of physical activity

Background:

  • In-task affective responses during exercise predict future physical activity.
  • Research on this affect-behavior relationship for high-intensity interval training (HIIT) and its long-term effects is limited.

Purpose of the Study:

  • To determine if in-task affect during moderate-intensity continuous training (MICT) and HIIT predicts changes in unsupervised physical activity 12 months later.
  • To investigate if exercise type (MICT vs. HIIT) moderates this affect-behavior prediction.

Main Methods:

  • Ninety-nine low-active, overweight adults were randomized to 2 weeks of supervised MICT or HIIT.
  • Free-living moderate-to-vigorous physical activity (MVPA) was assessed via accelerometry for 12 months post-intervention.

Main Results:

  • In-task affect predicted 12-month changes in MVPA for the MICT group (p=.03).
  • In-task affect did not significantly predict 12-month changes in MVPA for the HIIT group (p=.85).
  • The overall model predicting MVPA change was not significant (p=.07).

Conclusions:

  • The affect-behavior relationship in exercise may differ based on exercise modality.
  • For HIIT, other psychological factors beyond in-task affect may be needed to predict future physical activity behavior.