ArticleEuropean journal of applied physiology2026
No sex differences in fat oxidation in response to exercise prescribed according to maximal heart rate or ventilatory threshold.
Article in European journal of applied physiology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
aimMost data report that women exhibit higher fat oxidation (FOx) than men during exercise, yet studies typically prescribe exercise using percent maximal heart rate or oxygen uptake (%HR/VO PURPOSE: To examine sex differences in substrate metabolism when exercise is prescribed using %HRmax and ventilatory threshold (VT).
methodsActive men (n = 24) and women (n = 25) underwent incremental cycling to determine VO
resultsAt 62%HRmax (workload = 31 ± 6 vs. 24 ± 7%PPO, p < 0.001), there was no difference in RER (0.88 ± 0.05 vs. 0.85 ± 0.06, p = 0.12) or FOx (4.6 ± 2.3 vs. 4.8 ± 2.0 mg/kg FFM/min, p = 0.78) between men and women, although men revealed higher carbohydrate oxidation (CHOOx) versus women (16.4 ± 4.8 vs. 12.9 ± 6.1 mg/kg FFM/min, p = 0.03). Cycling at 30% below VT (workload = 46 ± 5 vs. 44 ± 7%PPO, p = 0.20) revealed no difference in RER (0.92 ± 0.06 vs. 0.90 ± 0.05, p = 0.16), FOx (3.9 ± 3.2 vs. 4.8 ± 2.6 mg/kg FFM/min, p = 0.49), or CHOOx (27.3 ± 7.8 vs. 24.6 ± 11.1 mg/kg FFM/min, p = 0.35).
conclusionData reveal no sex differences in FOx when exercise is prescribed according to VT or %HRmax.
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