Document Type : Original Article
Researchers
1 The master student of allameh tabatabaee university
2 university of allameh tabatabaee
3 university of allame tabatabaee
Ministerial Ethics Committee
Research Objective:
This study aims to investigate the effect of caffeine supplementation on the athletic performance of female sprinters during the menstrual phase, at two different times of day: morning and afternoon. The research seeks to explore the interaction between circadian timing, hormonal fluctuations, and performance parameters such as anaerobic power, strength, balance, sprint speed, and reaction time.
Methodology:
This is a semi-experimental study using a pre-test/post-test design with control and experimental groups. Participants were semi-professional female sprinters aged 18 to 24, all in the menstrual phase. Caffeine was administered at a dose of 6 mg/kg body weight, one hour prior to exercise. Performance tests were conducted in both morning and afternoon sessions. Data were analyzed using repeated measures ANOVA.
Results:
It is anticipated that caffeine consumption will lead to significant improvements in anaerobic power, sprint performance, reaction time, and a reduction in perceived exertion (RPE), particularly in the morning session. Additionally, caffeine’s effects may vary depending on the time of consumption within the menstrual cycle.
Conclusion:
The findings of this research can assist coaches, female athletes, and sports nutritionists in optimizing caffeine use based on menstrual cycle phases and training times. This could enhance performance and reduce fatigue in competitive settings.