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Q: The principal difference between isometric and isotonic exercises is the __________. A. use of free weights and weight machines B. rate of calories burned during exercise C. change in muscle length
during exercise D. type of muscles exercised
A: The principal difference between isometric and isotonic exercises is the change in muscle length during exercise. [ Letter C. Isometric exercise, or "isometrics", is a type of strength training in which the joint angle and muscle length do not change during contraction. Isometric exercises are opposed by a force equal to the force output of the muscle and there is no net movement. This mainly
strengthens the muscle at the specific joint angle at which the isometric exercise occurs, with some increases in strength at joint angles up to 20? in either direction depending on the joint trained.[4] In comparison, isotonic exercises strengthen the muscle throughout the entire range of motion of the exercise used. ]
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User: The principal difference between isometric and isotonic exercises is the __________. A. use of free weights and weight machines B. rate of calories burned during exercise C. change in muscle length during exercise D. type of muscles exercised

Weegy: The principal difference between isometric and isotonic exercises is the change in muscle length during exercise. [ Letter C. Isometric exercise, or "isometrics", is a type of strength training in which the joint angle and muscle length do not change during contraction. Isometric exercises are opposed by a force equal to the force output of the muscle and there is no net movement. This mainly strengthens the muscle at the specific joint angle at which the isometric exercise occurs, with some increases in strength at joint angles up to 20? in either direction depending on the joint trained.[4] In comparison, isotonic exercises strengthen the muscle throughout the entire range of motion of the exercise used. ]
nami008|Points 334|

User: What distinguishes push-ups from other chest exercises such as the bench press and dumbbell flies? A. The bench press also exercises the legs. B. Push-ups are a variable resistance exercise. C. Push-ups do not require any weights or machines. D. Push-ups are not actually chest exercises.

Weegy: What distinguishes push-ups from other chest exercises such as the bench press and dumbbell flies is that C. Push ups do not require any weights or machines.
innersource|Points 7465|

User: Well-designed weight-training programs only target two or three body areas.

Weegy: Indexed field controls Well-designed weight-training programs only target two or three body areas.
mayaceb18|Points 180|

User: Which of the following is TRUE about protein and supplements in diets? A. Everyone needs additional protein in their diet. B. Weight lifters need to include supplements in their diets. C. It is uncertain whether many dietary supplements are effective. D. Most supplements are known to enhance the benefits of weight training.

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Asked 8/30/2013 10:59:10 PM
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whats aerospace
Weegy: Nothing, really. Everything is good here. Thanks for asking. You have other questions for me today? :) User: whats aerospace Weegy: Nothing, really. Everything is good here. Thanks for asking. You have other questions for me today? :) (More)
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Updated 141 days ago|9/3/2017 10:19:44 AM
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Aerospace is the human effort in science, engineering and business to fly in the atmosphere of Earth (aeronautics) and surrounding space (astronautics).
Added 141 days ago|9/3/2017 10:19:44 AM
This answer has been confirmed as correct and helpful.
Confirmed by Masamune [9/3/2017 11:07:01 AM]
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