Question

question 7
1 pts
an isokinetic muscle action
involves constant speed of motion
allows the working muscles to release high tension over each section of movement range
is a form of dynamic contraction
in its pure form occurs rarely in sports events
all of the above

question 8
1 pts
when the muscle lengthens during the movement, ______________ contraction has occurred.

question 9
1 pts
the ability of an athlete to perform maximal voluntary muscular contraction in order to overcome powerful external resistance is known as

Explanation:

Question 7: Isokinetic muscle action involves a constant speed of motion, allows working muscles to generate high - tension throughout the range of motion, is a type of dynamic contraction, and in its pure form is rare in sports events. So all options are correct.
Question 8: When a muscle lengthens during movement, an eccentric contraction has occurred. This is a type of muscle contraction where the muscle is under tension while it is lengthening.
Question 9: The ability of an athlete to perform maximal voluntary muscular contraction to overcome powerful external resistance is known as strength.

Answer:

Question 7: E. all of the above
Question 8: Eccentric
Question 9: Strength