Which one of the following types of exercise involves abrupt, explosive movement?
a. isometric
b. isokinetic
c. plyometric
d. isotonic user: emotional effects of steroid use seem to depend on the of the steroid used.
a. quantity
b. potency
c. frequency
d. type user: which one of the following performance-enhancing drugs has the side effect of thickening of the blood?
a. erythropoietin
b. amphetamines
c. creatine
d. andro-dhea