What are isometric exercises, and why should runners do them?

If you haven’t tried isometric exercises (or are unclear on what the term means) you’re not alone. This oft-neglected type of strength training involves contracting a muscle without changing its length, with no visible movement at the joint. Instead of the muscle lengthening or shortening, as it does in isotonic exercises (like bicep curls or squats, for example), the muscle remains static, exerting force against an immovable object or resisting an opposing force.

Isometric exercises are characterized by holding a position (or maintaining a contraction) for a set period. Because they require little to no equipment, isometric exercises super easy and convenient, and perfect to add to your routine tonight.

Why isometric exercises?

For runners, isometric exercises are often used in injury rehab, because they allow you to strengthen certain muscles without putting excessive strain on injured tissues. They’re time-efficient, targeting specific muscle groups, and easily integrated into a warmup or cool-down. They can also help build strength and stability in specific muscle groups, which is essential for maintaining proper running form, building endurance and preventing injuries.

Planks

Planks build postural strength around your lower core, which is essential for maintaining good biomechanics, especially when you’re feeling fatigued near the end of a hard run or race.

Begin in a push-up position and straighten your arms, tighten your core and straighten your legs. Focus on keeping your butt in a straight line between your shoulders and heels.

Once you have your body positioned, hold the push-up position for two to three minutes. Stop when you can no longer hold the pose–having good technique is more important than how long you can hold the plank. Add 30-second increments until can hold for several minutes.

Try different plank variations, supporting yourself on your elbows, or by lifting one leg toward your chest. Advance to adding side planks.

Single-leg balance

Standing on one leg for an extended period (with eyes open, which is easiser, or closed, which is more challenging) can help improve balance and stability, which is essential for navigating uneven terrain while running. It can also help with proprioception (awareness of where the ground is in relation to your body), and strengthens the muscles around the ankle, knee, and hip joints.

Find a flat, stable surface to stand on. Begin standing upright with your feet hip-width apart and your arms relaxed at your sides, and shift your weight onto one leg. Keep a slight bend in your knee to avoid locking it.

Engage your core muscles by gently pulling your navel toward your spine, and slowly lift the foot of your non-weight-bearing leg off the ground, bringing it to a position where it is just hovering above the floor. Your raised thigh should be parallel to the ground, and your knee should be bent at a 90-degree angle. You can point your toes or flex your ankle; choose a comfortable position.

Gaze at a fixed spot in front of you to help with balance. Beginners can start by holding 15-30 seconds per leg and gradually work up to 60 seconds or longer as they improve their balance.

Release and repeat on the other side.

Wall-sits

This exercise helps create a powerful and resilient stride, improving leg endurance.

Place your back flat against the wall, and slide down until your thighs are at a 90-degree angle to your back (and to the floor). Keeping your lower back flat against the wall, take a deep breath and hold the sitting or chair position for two to three minutes.

It’s OK if you find that challenging–most beginners struggle to hold until the two-minute mark. Add 30-second increments over time, until you reach seven to 10 minutes or complete fatigue.

posted Thursday September 21st
by Keeley Milne