Possible detrimental effects of knee braces include(s) which of the following?

Possible detrimental effects of knee braces include(s) which of the following? 

A. changes muscle activity during gait
B. reduces sprinting speed
C. increases onset of fatigue
D. all of the above

Answer: D

The high incidence of knee injuries among snow skiers is partially due to which of the following?

The high incidence of knee injuries among snow skiers is partially due to which of the following? 

A. rigid boot which limit ankle motion
B. bindings which release during a fall
C. both A and B
D. none of the above

Answer: A

Which of the following affects the flight of a discus?

Which of the following affects the flight of a discus? 

A. speed at release
B. projection angle
C. orientation angle relative to the wind
D. all of the above

Answer: D

Exercise walking can have which of the following effects?

Exercise walking can have which of the following effects? 

A. improved balance in older adults
B. decreased likelihood of falls in older adults
C. decreased risk of osteoporosis for women
D. all of the above

Answer: D