Question

Q1. an isometric(static) muscle contraction:

Select one:
a) muscle tissue shortens
b) muscle tension exceeds the force of the load
c) the load is moved
d) both b and c are correct
e) none of the above is correct

Q2. Which of the following statements concerning the characteristics of different muscle fiber types is FALSE?

Select one:
a) the higher the ATPase activity, faster the speed of contraction
b) muscle fibers containing large amounts of myoglobin have a dark red color in comparison to the paler fibers, which have little myoglobin
c) oxidative types of muscle fibers contain a lot of myoglobin
d) scientific studies have found that, with selective training of a muscle tissue, slow twitch fibers can transform into fast twitch fibers and vise versa
e) in response to weight training, fast twitch fibers increase protein synthesis

Answer 1

1. b) muscle tension exceeds the force of the load

explanation: isometric contraction is the type of contraction in which the length of the muscle remains unchanged while the tension or the load is changed through out the contraction.

2. d) scientific studies have found that, with selective training of a muscle tissue, slow twitch fibers can transform into fast twitch fibers and vise versa

Explanation: There's no conclusive evidence that muscle fibers can transform from slow- to fast-twitch or vice versa