Summary: In a small crossover study in sedentary postmenopausal women, both high- and moderate-intensity interval exercise performed the day before a high-fat meal reduced post-meal triglycerides equally, but moderate intensity was better tolerated.
PICO Summary
| Element | Detail |
|---|---|
| Population | 11 sedentary postmenopausal women (mean age 56.7); randomised crossover trial, Brazil. |
| Intervention | High-intensity (HIIT) or moderate-intensity (MIIT) interval exercise performed the day before a standardised high-fat meal. |
| Comparison | No exercise (REST) before the high-fat meal. |
| Outcome | HIIT reduced triglycerides versus REST at 1, 3, and 4 hours, with no difference from MIIT. By incremental area under the curve, HIIT and MIIT both reduced triglycerides (28.2% and 39%; p<0.05) versus REST. Perceived exertion and heart rate were higher during HIIT. No effects on total cholesterol, HDL, or LDL. |
Interval exercise and post-meal triglycerides
Randomised crossover · postmenopausal women · high-fat meal
Moderate-intensity intervals lowered post-meal triglycerides as much as high-intensity, while being better tolerated. Either is reasonable; favour whichever the patient will sustain.
Expert Commentary
This is a tidy physiological crossover study addressing a clinically meaningful target, since postprandial triglyceride spikes are an independent cardiovascular risk factor and most people spend much of the day in the fed state, a concern heightened after menopause. The practical message is the reassuring one: moderate-intensity intervals lowered post-meal triglycerides just as much as high-intensity work, while being easier and more comfortable, which matters for adherence in sedentary women who often find vigorous exercise aversive. That the effect persisted to the next day is also useful, implying regular activity buffers dietary fat loads without needing to exercise right around every meal, consistent with enhanced lipoprotein lipase activity. The triglyceride-specific effect, with no change in cholesterol fractions, fits an acute rather than chronic adaptation. The clear limits are a very small sample of 11, single acute sessions rather than training, a standardised test meal, and postmenopausal women rather than a diabetes population, so generalisation is cautious. Can I use this with my patients? Yes, as encouragement. For postmenopausal or cardiometabolically at-risk patients, I would reassure them that moderate interval exercise confers comparable post-meal lipid benefit to high intensity, favouring whichever they will sustain.
References
Teixeira BC, Munhoz SV, Bicalho CCF, et al. Effects of high- and moderate-intensity interval training on postprandial lipemia in postmenopausal women after a high-fat meal. J Bodyw Mov Ther. 2025;45:870–877. doi:10.1016/j.jbmt.2025.10.013