3 Ab Workouts for Runners

Many common overuse injuries, from runner's knee to shinsplints, can be traced to weakness in the core, which includes the abs, lower back, and glutes, says Adam St. Pierre, M.S., exercise physiologist at the Boulder Center for Sports Medicine.

During running, the core muscles maintain the position of your pelvis. Your pelvis can rock front and back, side-to-side, or rotate. A strong core will prevent excessive motion of the pelvis, which will decrease the amount of repetitive-motion stress.

Do these three moves 3 to 5 times per week after your workouts and you'll increase your chances of getting to the starting line injury-free. (Looking for more than three moves? Boost results with this Complete Guide to Fast Abs workout.)

More: 3 Advanced Core Exercises for Killer Abs

Clamshells


What it does: Strengthens the glute medius, which controls rotation of the femur and alignment of the knee during running.

How to do it: Lie on your side with your head, shoulders, lower back, and feet up against a wall. Keeping your feet together, raise your top knee like a clamshell opening. Repeat 15 to 20 times on each leg. For additional resistance, you can put a circular elastic thera-band around your knees.

More: 6 Exercises to Become a Stronger Runner

Plank to Side Plank


What it does: Strengthens the abs and lower back, which help you maintain neutral pelvic alignment.

How to do it: Lie in a push-up position with your forearms on the ground and your elbows directly below your shoulders. Hold for 30 seconds. Turn to your side, keeping your elbow directly under your shoulder. Lift your hips until your body is in a straight line. Hold for 30 seconds. Repeat on other side. (What about the rest of your body? Try these 10 Total-Body Fitness Tests to see how fit you really are.)

More: 3 Best Core Exercises for Runners

Side-Lying Leg Raises


What it does: Strengthens the glute medius, which controls the rotation of the femur and alignment of the knee.

How to do it: Lie on your side against a wall. Raise and lower your top leg 15 to 30 times. Do five to 10 reps with your toe pointing forward, five to 10 reps with your toe pointing up, and five to 10 reps with your toe pointing down. Repeat on other leg.

More: Strength Train to Improve Running Economy

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