Research
Macro partitioning
Male physique athletes lose significantly more lean mass than female athletes during competition preparation, despite similar reductions in fat mass and muscle size.
Men preparing for physique competitions should be aware they may lose more muscle than women during a cut, likely because they reach lower body fat levels. Prioritizing protein and minimizing the depth of the cut may help preserve muscle.
GoodSupportsHIGH confidence
Weight loss, decreased energy intake, and increased aerobic exercise (p<0.05) led to decreased LM and FM-adjusted REE (p<0.05)... while males (p<0.001) lost more lean mass (LM) than females (p<0.05).
Why this rating
Controlled study with clear statistical differentiation.
Source
Weight loss induces changes in adaptive thermogenesis in female and male physique athletes
Ville Isola et al. · Applied Physiology Nutrition and Metabolism · 2023
DOI 10.1139/apnm-2022-0372
cohort · n=48Cited 21×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
More from this paper
- Intensive weight loss via energy restriction and increased aerobic exercise induces adaptive thermogenesis (reduced resting energy expenditure beyond mass loss predictions) in both male and female physique athletes.Good
- Adaptive thermogenesis is associated with significant hormonal changes, specifically decreased leptin and T3, and reduced resting heart rate.Good
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