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Acute exercise effects on postprandial fat oxidation: meta-analysis and systematic review
Regis C Pearson1,1, Alyssa A Olenick1,1, Edward S Green1,1
1Integrative Cardiovascular Physiology Laboratory, Department of Kinesiology, University of Georgia, Athens, GA 30602, USA.
Exercise moderately enhances postprandial fat oxidation. Factors like sex, age, and exercise type significantly influence this effect, highlighting the need for diverse research. Future studies should explore sex differences and varied exercise protocols.
Area of Science:
- Exercise Physiology
- Metabolic Health
- Nutritional Science
Background:
- Postprandial fat oxidation is crucial for metabolic health.
- Understanding exercise's role in postprandial fat metabolism is key.
- Current literature requires synthesis to guide future research.
Purpose of the Study:
- To systematically review and evaluate the effects of exercise on postprandial fat oxidation.
- To conduct a meta-analysis of existing studies.
- To identify moderators influencing exercise's impact and suggest future research directions.
Main Methods:
- Systematic review and meta-analysis of 26 studies (56 effects).
- Moderator analysis to investigate influencing variables.
- Quantitative review using established meta-analytic methods.
Main Results:
- A moderate overall effect of exercise on postprandial fat oxidation was found (Cohen's d = 0.58).
- Sex, age, weight status, training status, exercise type, intensity, timing, and meal composition were significant moderators.
- Most prior research focused on young, lean men undertaking moderate-intensity endurance exercise.
Conclusions:
- Exercise exerts a moderate positive influence on postprandial fat oxidation.
- Significant variability exists, influenced by numerous individual and exercise-related factors.
- Future research should prioritize investigating sex differences, diverse exercise modalities/intensities/durations, and varied meal compositions.
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