It is recommended that children and adolescents engage in _____ minutes or more of physical activity each day at a moderate to vigorous level.
a. 20
b. 30
c. 40
d. 50
e. 60
Q. 2According to the Physical Activity Guidelines for Americans, adults should perform moderate-intensity aerobic exercise for at least _____ minutes per week.
a. 60
b. 90
c. 120
d. 150
e. 180
Q. 3Why does delayed onset muscle soreness happen?
a. decreased blood supply to the muscles
b. dehydration
c. insufficient glucose supply during exercise
d. increased lactic acid build-up
e. overused muscles develop microscopic tearing in muscle fibers
Q. 4Which beverage appears to improve hydration for exercise that lasts over an hour?
a. iced tea
b. water
c. a sports drink
d. coffee
e. beer
Q. 5Which component of physical fitness refers to the length of time muscles can perform physical activities?
a. muscular strength
b. muscular endurance
c. cardiorespiratory fitness
d. balance
e. flexibility
Q. 6Glycogen is stored in the _____.
a. pancreas only
b. muscles only
c. liver only
d. pancreas and muscles
e. muscles and liver
Q. 7Activities such as basketball and football, which involve walking, running, and high-intensity, quick moves, use _____ for energy.
a. glucose only
b. fat only
c. amino acids only
d. glucose and fat
e. glucose and amino acids
Q. 8Stretching _____ when it is done before exercise begins.
a. increases muscular endurance
b. increases performance
c. reduces the risk of muscle injury
d. protects against muscle soreness
e. improves muscle stiffness
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