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How to Strengthen Legs With Bad Knees

by
author image Suzy Kerr
Suzy Kerr graduated from Grady School of Journalism and Mass Communications at the University of Georgia. She completed her Master's degree in Nutrition Sciences, also at the University of Georgia. Suzy has been a successful health, fitness and nutrition writer for more than 10 years, and has been published in various print and online publications.
How to Strengthen Legs With Bad Knees
Rebuild knee strength using low impact exercises. Photo Credit Stockbyte/Stockbyte/Getty Images

The knees are one of the complex joints in the body, with ligaments, tendons and bones all connecting to power you through daily activities. They’re also highly susceptible to injury, but taking steps to strengthen and support the knees can help prevent pain and reverse existing damage. If you’ve already got bad knees, there are several exercises that can help you build strength in the surrounding muscles to enhance knee function and reduce pain.

Water-based Exercises

How to Strengthen Legs With Bad Knees
Water-based Exercises Photo Credit mediaphotos/iStock/Getty Images

Water-based activities like swimming build strength while being low impact, meaning they put less stress on the joints, including the knees. “Run” in the water to increase leg strength. Strap on a flotation belt and head to the deep end of the pool. Keep your body straight and alternate between high knees and marching for variety. Swim laps using different types of strokes to work different muscle groups; combined with kicking, this will exercise your whole body.

Cycling

How to Strengthen Legs With Bad Knees
Cycling Photo Credit George Doyle/Stockbyte/Getty Images

Cycling is another low impact form of aerobic activity that will also increase strength and joint mobility. Do an interval bicycling workout that alternates high and low intensity riding to burn calories and increase lean muscle mass. Start with a five-minute warmup at an easy pace, then increase your speed for one minute at about 70 percent of your maximum exertion. Recover for two minutes at 40 percent exertion, then climb by increasing the resistance for one minute, then recovering at 30 percent exertion for two minutes. Continue this pattern for a total workout of 35 minutes, being sure to end with a five-minute cool down.

Ellipticals

How to Strengthen Legs With Bad Knees
Ellipticals Photo Credit LUNAMARINA/iStock/Getty Images

Ellipticals offer low impact exercise opportunities, but if used incorrectly they can cause pain. Maintain correct posture and keep your core tight when using the machine. Start with a five-minute warmup at level 3 resistance. Increase to level 5 for five minutes, then level 6 for five minutes, then all the way up to level 8 or 9 resistance for 10 minutes. Move back down to level 6 for five minutes, then down again to level 3 or 4 for five minutes. If your elliptical trainer can be pedaled in reverse, do this to work your calves and hamstrings even more.

Body-weight Exercises

How to Strengthen Legs With Bad Knees
Body-weight Exercises Photo Credit franck camhi/iStock/Getty Images

Try and increase your flexibility by stretching the muscles surrounding the knees and do basic body-weight exercises. Start with thigh, calf and hip stretches. Stretch your thighs by bending one leg behind you and pulling that foot to your rear. Stretch your calves by pushing against a wall with one foot back farther. Push that heel to the ground to work the calf muscle. Stretch your hips and IT band by sitting cross-legged on the floor, then pulling one knee toward your chest. Straight leg lifts will strengthen your quads, and these are done by lying on your back and lifting one leg at a time six to 12 inches off the floor. Hold for 10 seconds, then lower and repeat 10 times for each leg. Do a half squat to further strengthen leg muscles. From a standing position, lower and raise yourself slightly – using an 8- to 12-inch range -- to mimic riding a horse. Do 10 to 20 reps for five sets.

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