Research

Mixed

Pre-contest preparation in physique athletes involves significant caloric restriction and high-volume training, leading to marked alterations in body composition, hormonal profiles, and psychometric outcomes, with sex-specific divergent responses in lean mass and hormone regulation.

If you are preparing for a physique competition, expect significant changes. You will likely lose 8-9% body fat over 3-8 months. Men may lose lean mass despite high protein intake, while women may maintain or slightly gain it. Hormones like testosterone will drop in men, and cortisol will rise in both sexes. Sleep quality and mood may suffer. This is a controlled stressor; manage it with consistent resistance training and gradual caloric deficits.

ModerateQualifiesMEDIUM confidence
The results indicated marked alterations across the array of analyzed outcomes, sometimes with high inter-individual variability and divergent sex-specific responses.
Brad J. Schöenfeld et al. · Journal of Functional Morphology and Kinesiology · 2023

Why this rating

The study is a systematic review of case studies (n=11, 15 athletes), which provides descriptive data but lacks the statistical power of randomized controlled trials.

Source

Alterations in Measures of Body Composition, Neuromuscular Performance, Hormonal Levels, Physiological Adaptations, and Psychometric Outcomes during Preparation for Physique Competition: A Systematic Review of Case Studies

Brad J. Schöenfeld et al. · Journal of Functional Morphology and Kinesiology · 2023

DOI 10.3390/jfmk8020059

systematic_review · n=15Cited 18×
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DOI resolved against Crossref · corpus check 2026-06-10

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