Combination of High-Intensity Interval Training and Creatine Intake Enhances Leg Strength and Anaerobic Power without Changes in Body Composition in Physically Active Adult Men

Abstract

Abstract Background Different training methods and ergogenic aids has been used to increase athletic performance. In this study, to understand the effect of the combination of the six-week high intensity interval training (HIIT) and creatine supplementation on body composition, leg strength, and anaerobic power in physically active male adults was purposed. Methods In this six-week study a total of fifteen physically active men with the mean age of 21.13 ± 1.68 years were divided into two groups as Wingate based HIIT training group (HIIT) and Wingate based HIIT training + Creatine supplementation group (C-HIIT). Both groups performed a total of six weeks three days a week of HIIT training, the scope of which increased in the second three-week period and organized based on Wingate. In addition to these trainings, the C-HIIT group took a total of 10 g of creatine each training day, 5 grams 30 minutes before the load and 5 grams immediately after the load. Their body composition, leg strength, anaerobic power measurements were taken three days before the study started and three days after it ended. Results According to the findings, although there was no significant difference in body composition values between the two groups, it was observed that leg strength (p < 0.05) and anaerobic power parameters such as peak power, average power, and minimum power improved significantly in the C-HIIT group (p < 0.01). Conclusions Comparative effectiveness of additive of 10 gram of creatine monohydrate to HIIT appears to be efficient in improving leg strength and anaerobic power in physically active adult men. Trial registration This research was registered retrospectively on August 7, 2023 with the number NCT05981820.