AND
*Tarnopolsky et al. (1988) used elite bodybuilders and found that less protein was needed than in novice bodybuilders. In fact, the finding that the more experienced you are, the less protein you need, has been replicated in several studies (Rennie & Tipton, 2000; Hartman, Moore & Phillips, 2006; Moore et al., 2007).
*Lemon et al. (1992) studied bodybuilders training 1.5h per day, 6 days per week and still concluded 0.75g/lb is the highest intake at which body composition benefits could occur.
*Phillips & Van Loon (2011) concluded 0.82g/lb is the upper limit at which protein intake benefits body composition.
*Tarnopolsky et al. (1992) observed no differences in whole body protein synthesis or indexes of lean body mass in strength athletes consuming either 0.64g/lb or 1.10g/lb over a 2 week period. Protein oxidation did increase in the high protein group, indicating a nutrient overload.
* Walberg et al. (1988) found that 0.73g/lb was sufficient to maintain positive nitrogen balance in cutting weightlifters over a 7 day time period.
* Tarnopolsky et al. (1988) found that only 0.37g/lb was required to maintain positive nitrogen balance in elite bodybuilders (over 5 years of experience, possible previous use of androgens) over a 10 day period. 0.45g/lb was sufficient to maintain lean body mass in bodybuilders over a 2 week period. The authors suggested that 0.55g/lb was sufficient for bodybuilders.
* Lemon et al. (1992) found no differences in
muscle mass or strength gains in novice bodybuilders consuming either 0.61g/lb or 1.19g/lb over a 4 week period. Based on nitrogen balance data, the authors recommended 0.75g/lb.
* Hoffman et al. (2006) found no differences in body composition, strength or resting hormonal concentrations in strength athletes consuming either 0.77g/lb or >0.91g/lb over a 3 month period.
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