Every exercise you do involves some sort of muscle contraction. Exercises with movement involve isotonic muscle contractions and exercises without movement involve isometric muscular contractions. Knowing the difference between these two different types of contractions can help you refine your workout routine, make the most of each exercise and get a comprehensive workout.

1. Isotonic Workout Plan

Isotonic Contractions

• Some fitness trends make it seem like in order to get in shape, you have to bounce around like crazy, throw tires into the air, or leave a pool of sweat on the ground after every workout. But believe it or not, you can build serious strength—without even moving a muscle. It's called isometrics.
• And what is the point of holding the dreaded “plank” exercise for a minute at a time? The answer lies in the difference between isotonic and isometric exercise, and you’ll want to include both in your strength training routine to receive maximum health benefits!
• Consult a trainer to chalk out a workout schedule that includes different kinds of workouts and does not focus on only isometric workouts. 10 Best Isometric Exercises to Include in the Isometric Workout Routine. Isometric exercises require very less equipment and can be done at any place and during any time of the day.
• 💪🏼 Bodyweight Total Body Toning Workout/ Isometric & Isotonic Exercises. Combine this routine 1-2 times a week with our Iso-shape series for abs and thighs and you are sure to get tight.
• By incorporating Isotonic exercises into your daily routine, one can achieve all of this and more. This article will tell you everything you need to know about Isotonic exercises, it’s benefits and some excellent examples of the isotonic workout. What is Isotonic Exercise? An Isotonic exercise is a form of weight training.

An isotonic contraction is any contraction is which a muscle shortens to overcome resistance. When a muscle shortens, at least one joint moves, and body movement occurs. The resistance can come from lifting a weight, pulling up your body, or from some other object such as when you lift a bag of groceries. An isotonic contraction involves two phases. The concentric phase occurs when muscle is shortened in an upward movement. The eccentric phase occurs when the muscle is lengthened in a downward movement.

Isotonic Examples

Most gym exercises are isotonic exercises. Simple exercises such as pushups, squats, lunges and situps are all isotonic. Any weight machine that involves movement is also isotonic, such as lat pulldowns, chest presses and leg extensions. If you choose a weight on a machine that is too heavy for you to lift, and you push the handles but the machine does not move, your muscles are not contracting isotonically but rather isometrically, since no movement is occurring.

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Exercises with movement involve isotonic muscle contractions and exercises without movement involve isometric muscular contractions. Knowing the difference between these two different types of contractions can help you refine your workout routine, make the most of each exercise and get a comprehensive workout.

Isometric Contractions

Isometric muscle contractions do not involve any movement. An isometric contraction occurs when your muscles push against a fixed resistance and no joint or body movement occurs. Even though there is no movement, your muscles are still working and contracting. If you are going to include isometric contractions in your workout, don't push too hard. Isometric contractions can significantly increase blood pressure, so don't hold your breath when doing these exercises and give yourself plenty of breaks. Talk to your doctor if you feel lightheaded or experience any chest pain during an exercise.

Isometric Examples

You can do isometric exercises in two different ways: By trying to move something that is too heavy for you to move or by holding static exercise poses. The second method includes plank holds, squat holds, side planks, abdominal holds, lunge holds and any other motionless exercise. Rather than counting repetitions, isometric exercises involve holding the position for a given amount of time, such as 30 seconds.

References

• ACSM’s Resource Manual for Guidelines for Exercise Testing and Prescription, 5th edition; Leonard A. Kaminsky
• Exercise Physiology Theory and Application to Fitness and Performance; Scott K. Powers

About the Author

Scotty Brunning is a Chicago-based health and fitness writer. Having worked with the Pittsburgh Pirates and the Cooper Fitness Center in Dallas, he has a plethora of fitness experience. He is an ACSM-certified health fitness specialist and a Cooper Institute master fitness specialist. Brunning holds a master's degree in health and fitness.

Isotonic Workout Plan