Research
Adherence
Physical activity improves insulin sensitivity by altering skeletal muscle fatty acid composition, specifically by reducing palmitic acid and improving delta-5 desaturase activity.
Regular physical activity changes the fat composition in your muscles, lowering palmitic acid and improving enzyme activity related to insulin sensitivity, even if your diet stays the same.
GoodSupportsHIGH confidence
Despite an identical fatty acid composition of the diet, subjects who were physically active showed a fatty acid pattern of the skeletal muscle phospholipids characterized by less palmitic acid and DHLA and an improved activity of delta-5 desaturase...
Why this rating
Based on studies comparing trained vs. untrained subjects with controlled diets.
Source
Desaturation and Elongation of Fatty Acids and Insulin Action
B. Vessby et al. · Annals of the New York Academy of Sciences · 2002
DOI 10.1111/j.1749-6632.2002.tb04275.x
narrative_reviewCited 317×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Substituting saturated fatty acids with monounsaturated fatty acids in the diet improves insulin sensitivity, whereas substituting saturated fats with polyunsaturated n-6 fatty acids does not.Good
- High activity of the delta-5 desaturase and high levels of long-chain polyunsaturated fatty acids in skeletal muscle are strongly associated with good insulin sensitivity.Good
Related findings · Adherence
- Regular physical activity (at least 150 minutes/week of moderate-intensity) reduces all-cause and cardiovascular mortality by 20-30% and lowers the risk of type 2 diabetes by 25-35%.Strong
- Increasing physical activity from a sedentary lifestyle to an active one in middle adulthood significantly reduces the risk of coronary events compared to remaining sedentary.Strong
- Resistance exercise is the only intervention capable of consistently restoring muscle function and strength in sarcopenia, partially overcoming age-related anabolic resistance.Strong
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