The quads, glutes, adductors and calves
quads and calfs
leg muscles and speed
To jump, you need the force of your leg muscles pushing off of the floor to move you into the air. Without bending your knees, you can't use your leg muscles.
The muscles used in a squat jump are the quads, and the hamstrings. The lower back muscles and the abdominals are used also
leg muscles and speed
When you Bend your Leg your hamstring contracts and your quadriceps relax
You can jump high because of the strength and power in your leg muscles. When you push off the ground with force, your muscles contract quickly, propelling you upwards. Additionally, your body's ability to generate energy and coordinate movements plays a role in how high you can jump.
Leg muscles are deep to the skin of your leg. The skin is superficial to the muscles.
Practice my dear. Jumping is an exercise and every time you try, you get better. Even in video games, the character doesn't always make the jump. But every time he tries, he gets better. Try running for exercise. If you run, your leg muscles will get stronger and if your leg muscles are strong you can jump better.
The muscles that flex and extend your finger are not as large as those in your leg. As a result, the biochemical processes that cause muscles to flex are limited. Trying to exert leg-force with your hands is a bit like using a moped to haul a boat.
What has the most affect on how high a person can jump has to do with ones muscles in their entire body, not just the leg muscles. Muscles in the trunk as well as all extremities are used when jumping. Technique is also a factor in gaining height as well.
Elepants can't jump it's as simple as that. No elephant whatever the age can physically jump.