The leg extension is one of the most dependable exercises to build quad muscle, but depend on a machine. Here's how to grow monster thighs with other moves.

Knee-strengthening exercises do not directly affect the knee joint. However, they can strengthen the muscles surrounding it. Strong muscles in the legs can help provide support for the knees.

But what muscles do deadlifts work? Basically all the biggest muscle groups in the bottom half of your body, plus your core, ... knee extension is straightening the knee.) ...

When you feel ready, add range-of-motion exercises once or twice a day. Warm up your muscles with a 5-minute walk first. For your knee: Hamstring stretch. Lie on your back with both legs straight out.

Water workouts offer seniors with knee pain a safe, low-impact way to boost strength, balance, and stability. Learn how to do ...

Your physical therapist may also use electricity to help improve your leg muscle strength and knee movement. It's a method called "TENS," short for transcutaneous electrical nerve stimulation.

The muscles around the back of the thigh are the hamstrings, which are responsible for extension of the hip and flexion of the knee, making them equally essential for physical activity.