Abstract
Tribulus terrestris L. (TT) supplementation have been shown to enhance sports performance in many but not all studies. Moreover, data regarding the potential impact of TT supplementation on CrossFit(®) endurance is limited. This study aimed to determine whether TT supplementation improve body composition, hormonal response, and performance among CrossFit(®) athletes. In a randomized, single-blind, placebo-controlled trial, a total of 30 healthy CrossFit(®)-trained males were randomly allocated to receive either 770 mg of TT supplementation or a placebo daily for 6 weeks. Body mass, fat mass, fat composition, testosterone and cortisol levels, and CrossFit(®) performance (5 common Workouts of the Day: back squat, bench press, dead lift, Grace, and CrossFit(®) Total) were assessed before and after intervention. There were no significant group x time interactions for the outcomes of the study except for testosterone levels and bench press performance (p < 0.05). TT supplementation did not impact enhance performance or body composition in CrossFit(®) male athletes. However, TT supplementation may act as a testosterone booster helping the recovery after physical loads and mitigating fatigue.