Which physical training strategy focuses on improving endurance and strength?

High-intensity interval training (HIIT) is a physical training strategy that combines short bursts of intense exercise with rest or low-intensity periods. This approach is effective for improving both endurance and strength due to its emphasis on varying the intensity and duration of the workouts. During the high-intensity phases, participants engage their muscles and cardiovascular system significantly, leading to increased strength and stamina over time.

HIIT is designed to push the body's limits, which contributes to enhanced aerobic capacity while also building muscle strength through explosive movements. It is a time-efficient method that can yield substantial benefits in both strength and endurance without requiring prolonged workout sessions. Thus, it effectively targets both fitness components, making it the most suitable option among the strategies listed.

While aerobic exercise programs focus primarily on cardiovascular endurance, resistance training is chiefly centered on building muscle strength. Continuous military drills may enhance specific skills and endurance but do not emphasize strength gains to the same extent as HIIT. Consequently, choosing HIIT aligns directly with the goal of improving both endurance and strength simultaneously.