Intermediate Knee
Strengthening Exercises

Written By: Chloe Wilson, BSc(Hons) Physiotherapy
Reviewed by: KPE Medical Review Board

Knee strengthening exercises will help nearly all cases of knee pain and can even prevent knee problems from developing and recurring.

Here we will look at intermediate level strengthening exercises for the knee and leg muscles.

I have grouped these knee strengthening exercises by muscle group: quads, hamstrings, buttocks, kneecap, calves and balance. Pick the ones you find best for you. 

If you haven’t already tried the beginners strengthening exercises, I suggest you start there. Once they are feeling easy, come back to these ones. Then, when you have mastered these ones, you can move on to the advanced knee strengthening exercises.

Purpose: A great twist on traditional squats. Strengthens the quads but protects the knees. One of my all-time favourite knee strengthening exercises

Starting position: Stand with your back against the wall, feet apart, toes pointing forwards

Action: Slowly slide down the wall a few inches bending your knees. Hold for 3-5 seconds and return to starting position.

Repetition: Repeat 10-25 times, 2x daily

Progression: 1) Increase the depth of the dip 2) Hold the bent knee position for longer (aiming for 10secs)

Note: As you squat, don’t let your knees come too far in or out - Keep your knee in line with your second toe so you can always see your big toe past the inside of your knee

Purpose: This is a great quads knee strengthening exercise that also helps reduce knee pain with stairs

Starting Position: Stand facing the bottom of the stairs or a single step. Hold onto the wall/rail for support if required

Action: Step up onto the first stair leading with the leg you want to strengthen. Without turning round, step both feet back down leading with the good leg

Repetition: Repeat 10-30 times, 2x daily

Progression: 1) Don’t hold onto anything 2) Keep the leg to be worked up on the step and just move the other leg up and down

Note: If you don’t have any steps at home, be creative e.g. telephone directory

Purpose: Strengthen the quadriceps, improve balance, improve knee stability

Starting Position: Stand sideways on top of a step. Hold the wall/rail for support

Action: Slowly lower your good leg down to the floor and then bring it back up (keeping your other foot up on the step throughout)

Repetition: Repeat 5-20x, 2x daily

Progression: Stand facing forwards and step down instead of sideways, lightly touching the good leg to the floor

Note: 1) You are aiming to do this in a slow, controlled fashion
2) Don’t let the knee twist inwards, keep it in line with your second toe so you can always see your big toe

Purpose: Strengthen the buttock muscles (glutes) to help support the knee and prevent excessive weight going through the inner side of the knee. Another one of my favourite knee strengthening exercises

When to do: Almost always appropriate – most people have weak glutes. Make sure you can do The Clam Stage 1 first

Starting position: Lie on your side with your hip and knees bent approx 90°, feet together. Lift your feet up about 30cms off the bed, knees still resting on the bed/floor

Purpose: Strengthen the hamstrings whilst also working the quads and buttock muscles. Make sure you can do Bridging: stage 1 first

Starting Position: Lie on your back with both knees bent about 90° and your feet on the floor/bed

Action: Clench your buttocks and lift your bottom off the bed as high as you can without arching your back. Then lift one leg up. Hold for 3-5 seconds and slowly lower

Repetitions: Repeat 10-25 times, 1-2x daily

Note: 1) Keep your back straight – don’t let it arch as you lift up, it should be your bottom doing the work
2) Don’t hold your breath – keep breathing normally
3) Don’t let your hips drop during the exercise – keep them up as high as you can

Purpose: Strengthen the muscles on the inside of your knee that are responsible for how the kneecap moves. Also increases knee stability

Starting Position: Sit in a chair, feet hip width apart with a soft football in between your knees.

Action: Clench your buttocks, clench your knees and gently squeeze the ball with your knees. Hold for 3-5 secs and relax

Repetition: Repeat 10-20x, 2x daily

Tips: 1) Feel for the VMO muscle tightening with your fingers
2) When you squeeze the ball, make sure the squeezing movement comes from your knees, not your hips

More Kneecap Exercises

Purpose: Strengthen the calf muscles to help support the knee

Starting position: Stand on one leg holding onto something solid e.g. table or wall for balance.

Action: Push up onto your tiptoes so your heel is up off the ground as high as you can. Hold for 3-5 secs and slowly lower

Repetition: Repeat 10-30 times, 2x daily

Target: When you can do 30 repetitions on a single leg, that is a good sign you have good strength in your calf muscles

Purpose: Improve balance and proprioception. This exercise helps your body learn the subtle adjustments needed for good balance

Starting position: Standing. Place a small rolled up towel underneath the arch of your foot so you are on an uneven surface (toes and heel off the floor)

Action: Lift up your good leg and stand on one leg for as long as you can

Repetition: Spend 5 minutes doing this 2x daily

Progression: 1) Reach one arm out in different directions
2) Close your eyes 
3) Throw and catch a ball 
4) Slowly bend and straighten your knee a small amount