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.
Highlights
Significant differences were observed in all measures on body composition over the six weeks regardless of group (IG or control group (CG)) and with no significant difference in the group-time interaction, indicating that the CrossFit® training program would be responsible and not the terrestris L. (TT) supplementation
The dose 770 mg · day−1 of TT used in CrossFit® -trained men does not appear to influence body composition, rated perceived exertion (RPE), total strength, and anaerobic performance
Our results suggest that it could potentially intervene in the recovery process by a tendency, not significant, to increase serum testosterone and maintain a favorable trend in the testosterone/cortisol ratio, which would mean that it could potentially influence less fatigue and catabolism associated with exercise
Summary
Botanicals had the second largest share in 2020 and are expected to experience significant growth over the five years [2]. This growing demand for dietary supplements is because the COVID-19 pandemic has made health status the primary concern of the world’s population [1]. 50–80% of athletes regularly consume dietary supplements [3,4,5,6]. Nutritional supplements for athletes are intended for a specific population group with special nutritional needs that are established by the intensity and duration of exercise, sport discipline, time of the season, age, and gender [7]
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