Macro partitioning
Higher dietary protein intake is significantly associated with higher Phase Angle (PhA) in athletes, independent of fat-free mass, sex, and age.
If you are an athlete, ensure your daily protein intake is sufficient (likely >1.2 g/kg/day, with higher intakes up to ~1.8-2.1 g/kg/day potentially offering higher Phase Angle benefits). Focus on high-quality protein sources like meat and eggs, as these were specifically linked to better Phase Angle values independent of total calories or muscle mass. This suggests that optimizing protein intake supports cellular health and muscle integrity, which can be monitored via Phase Angle.
Multiple linear regression analysis indicated that protein intake was a significant predictor of PhA in athletes. This association remained significant even after adjustments for sex, age, and fat-free mass (R2 = 0.48, β = 0.27, P = 0.02).
Why this rating
Cross-sectional design establishes association but not causation; sample size is moderate (n=153) but specific to athletes.
Source
Association between phase angle from bioelectrical impedance and dietary intake in athletes: a cross-sectional study
Christianne de Faria Coelho‐Ravagnani et al. · Journal of Nutritional Science · 2025
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