Introduction: There is evidence to suggest that one’s diet may affect sleep quality and/or quantity. The purpose of this investigation was to determine if a high-protein diet (>2.2g/kg/d) affected parameters of sleep in exercise-trained men and women.

Methods: Eighteen trained individuals participated in this 14-day randomized crossover investigation (mean±SD: age: 32±8 years; height: 162.9±29.0 centimeters; body weight: 65.6±6.0 kilograms; body fat percentage: 17.8±6.7 %). Subjects consumed a high-protein (>2.2 g/kg/d) and a lower protein diet (

Results: There was a significantly higher intake of protein and calories during the high-protein phase of the study; however, there were no significant differences vis a vis the other dietary measures. There was no effect of protein intake on any measures of sleep.

Conclusions: The consumption of a high protein diet had no effect on sleep quality or duration.