Effects of Resistance and Speed on Electromyographic Activity of Thigh and Gluteal Muscles in Elite Athletes Throughout Resisted Sprint Running

External resistance and running speed influence thigh muscle activity differently, even within the same muscle group, likely due to distinct muscle architecture and function. These insights should be considered when designing sprint training programs to target specific muscle groups, avoid muscle overloading, and account for interindividual differences to optimize performance and reduce injury risk.