what physical exercise can enhance running speed and leg power?

Answer 1

Lift weights, do a total body work out, do lots of abdominal and core muscle work.
2 days each week do plyometrics and run stairs or stadium bleachers.

Along with flexibility you need muscles to sprint.

Answer 2

Toe-lifts.

Find something solid and sturdy, such as a two-by-four of wood, and place the front of your feet on it, so that your toes and foreward "balls" of your feet are on it while your heels touch the ground. Push up with your toes (as if standing on 'tip-toes') and then lower back down to the starting position. Repeat these lifts in sets of reps, and even add weight (such as a barbell or dumbells) to increase the muscle mass gained from the exercise.

In conjunction with other conventional leg exercises, such as squats, leg curls, and inverted leg curls, you should gain power, and speed.

Answer 3

jump rope, it's really good as a running alternitive

Answer 4

Jump roping. It can be hard on your calves though.

Answer 5

What's your objective??? And why do you emphasize leg power???