Azarbaijan Shahid Madani University Journal of Applied Health Studies in Sport Physiology 2676-6507 Articles in Press 2025 10 22 The effects of Tribulus terrestris supplements on testosterone and cortisol and Explosive power levels in elite weightlifters The effects of Tribulus terrestris supplements on testosterone and cortisol and Explosive power levels in elite weightlifters 15035 10.22049/jahssp.2025.30524.1735 FA Saeid Alihosseini University of Mohaghegh Ardabili Marefat Siahkouhian University of Mohaghegh Ardabili Omid Yousefi University of Mohaghegh Ardabili Ebrahim Piri University of Mohaghegh Ardabili 0000-0001-9188-9746 Journal Article 2025 04 17 Abstract <br /><br />Background& purpose: The use of various supplements to enhance athletic performance has become widespread among athletes. This study aimed to investigate the effects of Tribulus terrestris supplementation on testosterone and cortisol levels, as well as explosive power in elite weightlifters from Ardabil.<br /><br />Methods: This was a double-blind, quasi-experimental study. Twenty elite weightlifters (mean age 19.35±3.5 years, height 179.46±3.9 cm, and weight 102.6±5 kg) were randomly divided into experimental and control groups. The experimental group consumed Tribulus terrestris for 4 weeks alongside their weightlifting training, while the control group received a placebo. Data were analyzed using ANCOVA and independent t-tests.<br /><br />Results: The results showed no significant effect of Tribulus terrestris on testosterone (P=0.260) or cortisol levels (P=0.462). However, explosive power in both lower and upper body significantly improved in the experimental group (P=0.001).<br /><br />Conclusions: Short-term Tribulus terrestris supplementation does not affect hormonal levels but may enhance explosive power in weightlifters. Due to its potential unknown effects, further research is warranted. Abstract <br /><br />Background& purpose: The use of various supplements to enhance athletic performance has become widespread among athletes. This study aimed to investigate the effects of Tribulus terrestris supplementation on testosterone and cortisol levels, as well as explosive power in elite weightlifters from Ardabil.<br /><br />Methods: This was a double-blind, quasi-experimental study. Twenty elite weightlifters (mean age 19.35±3.5 years, height 179.46±3.9 cm, and weight 102.6±5 kg) were randomly divided into experimental and control groups. The experimental group consumed Tribulus terrestris for 4 weeks alongside their weightlifting training, while the control group received a placebo. Data were analyzed using ANCOVA and independent t-tests.<br /><br />Results: The results showed no significant effect of Tribulus terrestris on testosterone (P=0.260) or cortisol levels (P=0.462). However, explosive power in both lower and upper body significantly improved in the experimental group (P=0.001).<br /><br />Conclusions: Short-term Tribulus terrestris supplementation does not affect hormonal levels but may enhance explosive power in weightlifters. Due to its potential unknown effects, further research is warranted. https://jahssp.azaruniv.ac.ir/article_15035_3cd2e59957e87526c17f12601ba9bd49.pdf