How to Strengten Your Quads Without Hurting Your Knees

Co-authored by Monica Morris and Janice Tieperman

Last Updated: September 10, 2021

Quad exercises are an important part of your regular workout, but you don’t want to hurt your knees in the process. Don’t worry. There are ways to both stretch and strengthen your quads without creating any unnecessary strain on your knees. We’ve answered all your frequently asked questions, so you can find a safe and effective fitness strategy that works for you.

Question 1

Question 1 of 5:
Do weak quads cause knee pain?

1
Weak quads can create more knee pain for women. During a 5-year study, researchers tested over 4,500 people with knee osteoarthritis to see if weak quad muscles could lead to extra knee pain. At the end of the study, weak quad muscles were linked to potential, worsened knee pain for the female participants, but not the male participants.^{[1]
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PubMed Central
Journal archive from the U.S. National Institutes of Health
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- Anatomically speaking, the lower portion of your quads wrap around and insert at the knee.^{[2]
  X
  Expert Source
  
  Monica Morris
  Certified Personal Trainer
  Expert Interview. 18 November 2019.}

Question 2

Question 2 of 5:
How can I stretch my quads without knee pain?

1
Try a lying quad stretch. Lie face-up toward the end of your bed. Bend your right leg, pointing your knee upward and placing your right foot along the edge of the bed. Then, extend your left leg off the edge of the bed. Hold this position for up to 15 minute seconds, and then switch legs.^{[3]
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Cleveland Clinic
Educational website from one of the world's leading hospitals
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Question 3

Question 3 of 5:
How do I make my quads stronger without knee pain?

1
Do some straight leg raises. Lie face-up on your back, with your legs extended in front of you. Engage your quad muscles and raise your left leg 1 ft (0.30 m) or so off the floor. Lock your knee and hold this position for 1 second, and then lower your leg.^{[4]
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Cleveland Clinic
Educational website from one of the world's leading hospitals
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- Try doing 2 sets of 15 reps, about 2-3 days each week.
- You can also do straight leg raises while sitting in a chair.^{[5]
  X
  Expert Source
  
  Monica Morris
  Certified Personal Trainer
  Expert Interview. 18 November 2019.}

Question 4

Question 4 of 5:
How else can I strengthen my quads without knee pain?

1
Perform a quad set. Sit on the floor with both legs extended forward. Shift your right foot backward, bending your right knee so it points upward. Then, while keeping your left leg extended, tighten your left thigh muscles and push the bottom of your knee onto the ground. Hold your leg in place for 6 seconds, and then relax for 10 seconds.^{[6]
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Research source}
- Do two, 15-rep sets of this exercise for 2-3 days each week.^{[7]
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  Trustworthy Source
  Cleveland Clinic
  Educational website from one of the world's leading hospitals
  Go to source}

Question 5

Question 5 of 5:
How do I reduce knee pain when I exercise?

1
Add low-impact aerobics to your usual workout. Activities like biking, swimming, walking, and cycling don’t put as much stress on your knees. If you really enjoy high-impact exercise, like running, alternate your usual workouts with low-impact options.^{[8]
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Trustworthy Source
Cleveland Clinic
Educational website from one of the world's leading hospitals
Go to source}
2
Limit strenuous, high-risk exercises and activities. Heavy weightlifting, squatting, and constant kneeling can take a toll on your knees. Don’t do these activities too often, if you can.^{[9]
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Trustworthy Source
Cleveland Clinic
Educational website from one of the world's leading hospitals
Go to source}
- Your knees are extremely complicated, so it's important to treat them with a lot of care.^{[10]
  X
  Expert Source
  
  Monica Morris
  Certified Personal Trainer
  Expert Interview. 18 November 2019.}