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Self-Control Strength Depletion Reduces Self-Efficacy and Impairs Exercise Performance.

Jeffrey D Graham¹, Steven R Bray

¹Department of Kinesiology, McMaster University, Hamilton, Ontario, Canada.

Journal of Sport & Exercise Psychology

|November 3, 2015

Summary

Self-control depletion negatively impacts task self-efficacy, which in turn reduces physical endurance performance. This highlights the psychological role of self-efficacy in maintaining physical tasks after mental exertion.

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Area of Science:

Psychology
Sports Science
Cognitive Science

Background:

Self-control strength is a finite resource that can be depleted through demanding cognitive tasks.
Depletion of self-control has been linked to impaired performance in various domains, including physical tasks.
The psychological mechanisms underlying this performance decrement require further elucidation.

Purpose of the Study:

To examine the mediating role of task self-efficacy in the relationship between self-control depletion and physical endurance.
To investigate how cognitive exertion affects an individual's belief in their ability to perform subsequent physical tasks.

Main Methods:

Thirty-seven participants completed two isometric handgrip endurance trials.
A Stroop task (incongruent condition) was used to induce self-control depletion between trials.
Task self-efficacy for the second endurance trial was measured post-depletion.

Main Results:

Participants in the self-control depletion condition reported significantly lower task self-efficacy.
The depletion group exhibited a greater reduction in physical endurance performance compared to the control group.
Task self-efficacy was found to mediate the negative impact of self-control depletion on endurance performance.

Conclusions:

Self-control depletion negatively influences task self-efficacy.
Reduced task self-efficacy is a key psychological factor contributing to decreased physical endurance after cognitive exertion.
Future research should explore task self-efficacy interventions to mitigate performance decrements in sports and physical activities.