Exercise helps women with obesity improve insulin sensitivity and lose some fat, but not belly fat inside organs

Original Title

Effect of exercise training on insulin sensitivity, hyperinsulinemia and ectopic fat in black South African women: a randomized controlled trial.

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Summary

A 12-week exercise program helped black South African women with obesity breathe better, use insulin more efficiently, and lose a little fat from their hips. But the fat inside their liver, muscles, and pancreas didn’t change. The improvements in insulin didn’t come from losing that deep fat.

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Surprising Findings

Exercise improved insulin sensitivity without reducing ectopic fat

Most people assume that improving insulin sensitivity requires reducing fat stored in organs like the liver and muscles. But this study found no association between changes in insulin sensitivity and changes in ectopic fat.

Practical Takeaways

Focus on consistent aerobic and resistance exercise — even if your belly fat doesn’t budge — to improve insulin sensitivity and heart health.

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53%
Moderate QualityOverall Score

Publication

Journal

European journal of endocrinology

Year

2020

Authors

Melony C. Fortuin-de Smidt, A. Mendham, J. Hauksson, O. Hakim, D. Stefanovski, L. Clamp, Lindokuhle Phiri, J. Swart, L. Goff, L. Micklesfield, S. Kahn, T. Olsson, J. Goedecke

Open Access
19 citations
Analysis v1