From: Dietary protein safety and resistance exercise: what do we really know?
Higher-protein group | Lower-protein group(s) | Duration of higher-protein intake | Uncontrolled or unanalyzed variables | Nationality | Reference |
---|---|---|---|---|---|
Large male bodybuilders (protein 169 ± 13 g/d)1 | Smaller, male endurance and skill athletes (protein 99 ± 8 g/d)1 | unspecified | Prior exercise, body composition, | Belgian | 19 |
Large male bodybuilders (protein 142 ± 75 g/d)2 | Smaller, mixed male and female bodybuilders, vegetarians, "normals" (protein 84 ± 35 g/d)2 | As little as four months | Prior exercise3, body composition, non-protein nutrition info. (diet logs) | German | 30 |