What fitness component does the leg tuck primarily focus on?

The leg tuck primarily focuses on muscular endurance, as it requires the individual to repeatedly lift and hold their body weight while using their core, back, and arms. This exercise tests how well the muscles can sustain prolonged activity in a controlled manner. The movement demands strength from the abdominal and upper body muscles to maintain proper form and complete multiple repetitions, thus developing muscular endurance.

In contrast, cardiovascular fitness relates to the body’s ability to supply oxygen during sustained physical activities, flexibility refers to the range of motion in joints and muscles, and speed pertains to how quickly an individual can move from one point to another. None of these other components directly apply to the specific goals and requirements of the leg tuck exercise, solidifying muscular endurance as the correct focus area.