Examples of Isotonic & Isometric Exercises

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Understanding isotonic and isometric exercises may be easier with a few key examples. Get examples of isotonic and isometric exercises with help from a celebrity personal trainer in this free video clip.

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Video Transcript

Hello, this is Robert Brace, I'm here for eHow. I'm a Celebrity Trainer and Creator of The 28-Day Challenge Fitness DVD System, which you can get at the28daychallenge.com. We're here to talk about the difference between isotonic and isometric exercises. Now, let's first start with isotonic exercises. Isotonic exercise means actually the word isotonic actually means the same tension. So, it's any exercise that you're maintaining tension throughout the whole movement. Simple example, you have the bicep curls, what happens you're in a bicep curl is that as you bring the dumbbell up, your biceps are in tension and as you release, slowing down the release of the dumbbell, your biceps are always, also in tension. So, it's tension all the way up, tension all the way throughout the whole range of movement. Now, as your joint moves, the tension actually does change throughout the whole range of motion, but it still remains the fact that there is tension throughout the whole range of movement, that's what makes it an isotonic exercise. The second thing, second thing is isometric exercises. We just saw isotonic, where there was actual movement throughout the whole range of the exercise. Isometric really, you can think of as static exercises. A prime example of this would be the plank. What you do, you go down into a plank position on your elbows. Keep your legs absolutely straight and your abdomen pulled in. Right now, your core muscles are firing in your abdomen, all throughout the core, your muscles are in tension and you're actually getting a great workout here. But, as you can see, there's no movement. That's what an isometric exercise is. Another isometric exercise could be a wall sit, where you find a wall, you sit back against the wall. There is no movement, but your thighs are working and your abdomen is working. Both are great ways to build muscle strength and endurance. There's your isometric, there's your isotonic, that's the difference. I'm Robert Brace here for eHow, Creator of The 28-Day Challenge DVD System, which you can pick up at the28daychallenge.com.


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