Research
Energy balance
FFM decreased (0.3-2.7kg) in nine of 13 study groups.
Athletes may experience a decrease in muscle mass during caloric restriction.
StrongSupportsmedium confidence
FFM decreased (0.3-2.7kg) in nine of 13.
Why this rating
Based on systematic review of studies.
Source
A Systematic Review of Dietary Protein During Caloric Restriction in Resistance Trained Lean Athletes: A Case for Higher Intakes
Eric R. Helms et al. · International Journal of Sport Nutrition and Exercise Metabolism · 2014
DOI 10.1123/ijsnem.2013-0054
systematic_review · n=13Cited 123×
Read the paper DOI resolved against Crossref · corpus check 2026-06-10
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