Key result
Prior acute exercise moderately reduced the total postprandial triglyceride response (Cohen's d -0.60; P<0.0001), with larger effects in women and after high-intensity interval training.
Why the study?
Does prior acute exercise reduce postprandial lipemia?
Meta-Analysis
Does prior acute exercise reduce postprandial lipemia?
Standardized Mean Difference: -0.6
p-value: p=< 0.0001
Prior acute exercise significantly reduces postprandial lipemia, with greater effects observed in women, following high-intensity interval training, and when a post-exercise energy deficit is maintained.
Supports recommending acute exercise before meals to blunt TG excursions; confirms moderate effect and extends timing-focused research.
Reducing postprandial triglycerides (TG) can lower the risk for cardiovascular disease. The purpose of this study was to perform a meta-analytic review of the literature to estimate the effect of prior exercise on postprandial lipemia. A total of 121 effects were found from 76 studies for the total TG response and 70 effects from 44 studies for the incremental area under the curve (iAUC) TG response. The weighted mean effect was moderate for the total TG response, Cohen's d = -0.60 (P < 0.0001), and for the iAUC response, Cohen's d = -0.59 (P < 0.0001). Moderator analysis revealed women exhibited a larger reduction (P < .01) in the total TG response following exercise (d = -0.96) than men (d = -0.57); high-intensity interval training induced a larger reduction (P < .05) in the iAUC response (d = -1.49) than aerobic (d = -0.58) or resistance (d = -0.13) exercise, and participants maintaining an energy deficit following exercise exhibited a greater reduction in the iAUC response (d = -0.67) compared with participants in energy balance (d = -0.28). We conclude that prior acute exercise reduces postprandial lipemia, with the magnitude of effect influenced by sex, type of exercise, and energy deficit following exercise.
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Freese et al. (2013) conducted a meta-analysis in postprandial lipemia. prior exercise was evaluated on total TG response (Cohen's d -0.60, p=< 0.0001). Prior acute exercise moderately reduced the total postprandial triglyceride response (Cohen's d -0.60; P<0.0001), with larger effects in women and after high-intensity interval training.
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