September 14, 2023

5 Isometric Exercises You Should Be Doing and Why

These lower-intensity exercises are a great way to ease into physical fitness

person doing a wall squat

Need a pain-free starting point for your fitness journey? Or maybe you’re hoping to maintain muscle mass while rehabbing? Look no further than isometric exercise.

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Isometric movements are a great low-impact way to work your muscles, says sports medicine specialist Michael Dakkak, DO. “There’s certainly more efficient and effective ways to build strength, but anyone can benefit from them,” he notes.

Dr. Dakkak explains five isometric exercises you can try today, their benefits and how to get the most out of incorporating them into your fitness routine.

What is isometric exercise?

To understand isometric exercise, it helps to compare it to the most well-known form of strength training: isotonic exercise. These are exercises where you push, pull or lift, such as bicep curls, squats and pull-ups. Isotonic exercises have two parts (phases):

  • Concentric phase: Your muscles contract, becoming shorter and tighter. In a bicep curl, this would be the first part when you curl the dumbbells up to your shoulders.
  • Eccentric phase: Your muscles extend or lengthen. This is part two of a bicep curl, when you lower the dumbbells back down to your starting position.

But with isometric exercises, you hold a position that maintains the same muscle length, causing your muscles to fatigue (tire out). Because you’re holding one position (instead of performing continuous reps), your muscles don’t change their size or length the way they do in isotonic exercises.

“If you can tolerate eccentric or concentric movements, they are definitely more effective for building strength,” clarifies Dr. Dakkak. “But if you can’t or you’re rehabbing from an injury, isometrics are usually the first form of exercise we introduce.”

5 benefits of isometric exercise

Dr. Dakkak says you may experience several benefits when adding isometrics into your fitness routine:

1. Helps you get in shape

Because you can exercise at a lower intensity with little or no resistance, isometric exercises are a great starting point for your fitness journey. “Then, as you get more confident, comfortable and stronger, you can incorporate more isotonic movements and weighted exercises,” says Dr. Dakkak.

2. Maintains muscle strength

Research has shown that isometric exercises strengthen joints better than traditional strength training. They accomplish this without the discomfort that sometimes comes with eccentric and concentric movements.

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3. Reduces high blood pressure

A 2023 study has shown that isometric exercises — especially the wall squat — may be an effective way to lower blood pressure. A wall squat (or wall sit) is an isometric leg exercise where you hold a squat while your back and shoulders lean against a wall behind you. Researchers aren’t sure how this affects blood pressure, but think it may have to do with the movement of blood in and out of your muscles when you contract and release them.

“When we think about high blood pressure, it’s from chronic narrowing of the arteries, which causes higher pressure in them,” explains Dr. Dakkak. “We already know that exercise impacts blood pressure. But in this review of 270 previous studies, researchers found that isometric movements were the most effective.”

4. Helps rehab after an injury or surgery

While anyone can benefit from this form of exercise, Dr. Dakkak says isometrics are very beneficial for people who have recently had an injury or surgery. These exercises are a great lower-impact way for people to maintain muscle strength. “It’s the first type of exercise these patients would do on their own or with their physical therapist or medical team because it protects the healing area.”

5. Builds strength and range of motion if you have osteoarthritis

Osteoarthritis can be painful, especially when exercising or moving a joint through its full range of motion. “It can be helpful for people with osteoarthritis to use isometrics to activate muscles and maintain strength before loading them with more resistance,” adds Dr. Dakkak. “Research shows that doing it this way can reduce pain, range of motion and improve function.”

5 isometric exercise examples

There’s an isometric exercise to target every muscle in your body. But Dr. Dakkak recommends starting with these five to get the most bang for your buck:

  • Planks.
  • Dead hangs.
  • Isometric bicep curls.
  • Glute bridges.
  • Wall squats.

“How long you hold these movements depends on your fitness level. If you’re just starting out, aim to hold an exercise between three and 10 seconds. But if you can do up to 30 seconds, that’s reasonable, too,” he says. “Just listen to your body and increase your time gradually.”

He also recommends following the typical strength training model of performing three sets of whatever hold you’re working on. “As you get stronger, you can make it harder by using resistance or weight to keep the area you are working in a static position. The key in an isometric exercise is the lack of joint and muscle movement.”

Planks for core muscles

Planks are a type of isometric exercise that helps strengthen your core (abdomen) muscles. To do a plank:

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  1. Get down on the floor on your hands and knees.
  2. Extend both legs straight out behind you so your body forms a straight line from your head to your feet. You can also perform this movement with your forearms flat on the ground. To make it more difficult, you can elevate your feet on a bench.
  3. Work up to holding this position for 30 seconds or more.

Dead hangs and isometric bicep curls for arms

Dr. Dakkak recommends these two isometric exercises to maintain arm strength:

  • Dead hangs: Hang from a pull-up bar without pulling yourself up or lowering yourself down.
  • Isometric bicep curls: Hold a dumbbell in each hand. Curl the weights up toward your shoulders, but stop halfway with your elbows bent at 90 degrees and hold there.

Glute bridges and squats for leg and butt strength

To target your gluteal muscles (glutes for short), Dr. Dakkak recommends glute bridges. To do them:

  1. Lie flat on your back with your knees bent upward and your feet on the floor.
  2. Lift your pelvis in the air.
  3. Hold your position. “As you get more advanced, you can try single-leg glute bridges. One foot stays on the floor while you extend your other leg straight up to the ceiling. Then, lift and hold your bridge,” instructs Dr. Dakkak.

Target your leg muscles with isometric squats, known as wall squats. To do them:

  1. Stand with your back against a wall.
  2. Walk your feet out and lower down into a sitting (or squatting) position. If you can, your knees should be bent to 90 degrees, with your thighs parallel to the floor.
  3. Hold your position.

How to get the most out of your isometric workout

If you imagine a fitness routine like a music concert, then isometric exercises are the warm-up act, not the headliner. Dr. Dakkak says doing them without also doing isotonic exercises means missing out on the benefits (and gains) of a well-rounded regimen.

“I would much rather people perform concentric and eccentric movements if they can tolerate them than just focusing on isometrics,” he says. “There’s no research that says isometrics can improve speed or athletic performance. But there is research supporting the use of concentric and eccentric exercises to effectively build muscle mass.”

It’s also important to pay close attention to your form. Having bad form when exercising not only increases your risk for injury, but it also prevents you from maintaining and building muscle efficiently. “Form is key, so have an objective healthcare provider (think: a physical therapist, certified strength and conditioning coach or your physician) look at your form during exercise if you can,” advises Dr. Dakkak.

And remember: Consistency matters, too. Sticking with an exercise routine means your repetitions, sets and endurance will increase. You’ll get stronger — and reach your fitness goals.

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