Answer:
Muscle contraction is the activation of tension-generating sites within muscle fibers. In physiology, muscle contraction does not necessarily mean muscle shortening because muscle tension can be produced without changes in muscle length, such as by holding a heavy book or a dumbbell at the same position. The termination of muscle contraction is followed by muscle relaxation, which is a return of the muscle fibers to their low tension-generating state.
Explanation:
Answer:
To increase muscular endurance through exercise, you will need to perform exercises with low weight and complete a high number of repetitions. Push-ups are upper body muscular endurance exercises that target your chest and arms specifically.
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B. may sound like the answer but it also could be D.
Aerobic exercise is physical exercise of low to high intensity that depends primarily on the aerobic energy-generating process. Examples would be cycling, running, swimming, jogging, etc.
I think it’s 1,3, and 4 I’m so so sorry if that’s wrong