Which factor is most important for improving muscle power?

Improving muscle power fundamentally depends on the ability to exert force quickly, which is best achieved through a training approach that emphasizes both resistance and velocity. The correct choice focuses on medium resistance paired with high velocity, striking a balance that allows the muscles to develop both strength and speed concurrently.

When resistance is moderate, it enables the muscles to lift heavier weights at a faster rate, fostering neuromuscular adaptations that enhance explosive strength. This combination is essential for athletes and individuals looking to improve their power output, as it trains the body to respond quickly and forcefully, making it suitable for sports that require rapid bursts of energy.

In contrast, high resistance with slow repetitions primarily focuses on building strength rather than power, as it does not allow for the same level of explosive movement. Low resistance with high repetitions is useful for muscular endurance but does not contribute significantly to power development. Lastly, static stretching before workouts may increase flexibility but does not directly influence muscle power development, which relies more on strength and speed-based training techniques.