Mixed
Professional athletic status, characterized by structured multidisciplinary training and personalized nutrition, is associated with significantly lower fat mass percentage and higher fat-free mass percentage compared to non-professional athletes.
If you are an athlete, the difference between amateur and pro body composition is significant. Pros have lower fat and more muscle. This isn't just genetics; it's the result of structured, supervised training and personalized diet. If you are not a pro, you can still improve by structuring your training and paying closer attention to your nutrition, even if you can't access a full pro team.
The results revealed that professional athletes had significantly lower FM percentages (16.2% ± 7.1%) and higher FFM percentages (80.8% ± 6.8%) compared to their nonprofessional counterparts (FM 18.8% ± 9.9%, FFM 78.0% ± 9.6%).
Why this rating
Cross-sectional observational study with a reasonable sample size (n=183) but potential for confounding variables (sport type, genetics).
Source
Comparison of athlete diet index and body composition between professional and non-professional athletes: a comparative cross-sectional study
Elaheh Dehghani et al. · Journal of the International Society of Sports Nutrition · 2025
DOI 10.1080/15502783.2025.2533497
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