What is the difference between concentric muscle contractions and eccentric muscle contractions?
A concentric muscle contraction involves the shortening of a muscle as it exerts force either in a pushing or lifting motion. An eccentric muscle involves the lengthening of the muscle as it exerts force to return to the starting position in a controlled movement. Q: What are sets and reps? A: Repetitions (reps) are complete movements of an exercise. They are done in succession, usually 6-10 times. This grouping of repetitions is called a set. It is important to rest briefly between sets. 3 sets are usually done for each exercise. Q: How many times a week should strength training be done? A: Most people strength train 2-4 times per week. Strength training should be done at least 2 times per week.
