This study described the prevalence of supplement use by 309 male and female competitive bodybuilders. Participants completed a comprehensive survey detailing their supplementation patterns with respect to frequency of product use, spending characteristics, and reasons for use. Supplement use varied with training phase. Protein powder was more popular in the bulking phase, ammo acids and fat burners in the cutting phase. Fifty-nine percent of respondents spent $25-100 per month; 4.9% spent over $150. The most popular reason for supplement use was “to meet extra demands of heavy training.” In the bulking phase, both weight gain and anabolic supplements were reportedly consumed more frequently by men than women. In the cutting phase, “fat burners” were reportedly consumed by a greater percentage of females than males. The information provided by this study can help sport nutritionists identify supplements most often consumed by bodybuilders and can aid counselors as they guide bodybuilders towards more healthful nutrition practices.

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