Ch. 12 Flashcards Preview

Nutrition > Ch. 12 > Flashcards

Flashcards in Ch. 12 Deck (35):
1

describe exercise

leisure physical activity that is purposeful, planned, and structured

2

what is not a physiological effect of regular physical activity

decreases high-density lipoprotein cholesterol

3

approximately _____ of americans report that they do not engage in any leisure time activity

25 percent

4

the institute of medicine recommends a minimum of _____ minutes of physical activity each day for adults

60

5

physical activity not related to a person's occupation is defined as _____

leisure time physical activity

6

the top of the physical activity pyramid emphasizes activities that _____

we should do less of such as watching tv

7

marco wants to improve his cardiorespritory fitness. what type of activity would help him achieve his goal

aerobics class three times a week

8

what is meant by the overload principle

improving fitness by placing extra physical demand on the body

9

after completing an exercise session, adequate hydration in an athlete is best determined by _____

urine that is light yellow in color

10

to achieve cardiorespiratory fitness, you should train more than _____ days a week

2

11

the FIT principle is _____

the principle that a good physical fitness program should be based on frequency, intensity, and time.

12

what is traditionally used to evaluate the level of intensity of aerobic activity

heart rate

13

to achieve moderate intensity physical activity, the centers for disease control and prevention reccomends a target heart rate of 50 to _____ percent of an individuals maximal heart rate

70

14

what type of exercise would creatine phosphate (CP) be an important source of energy

sprinting in the 100 meter race

15

during exercise what sources are used by the body for glucose

glycogen stored in skeletal muscles

16

the primary end product of glycolysis is

pyruvic acid

17

the amount of ATP that can be produced in glycolysis can maintain eercise for no more than _____ minutes

3

18

when oxygen is scarce, cellular pyruvic acid will be converted to _____

lactic acid

19

what is false concerning aerobic metabolism

it leads to muscle fatigue

20

what is not true about cool-down exercise after an exercise session

helps digestion later on

21

fatty acid molecules provide much of the energy for

long term activity such as walking

22

what best describes how ATP provides energy to the body's cells

energy is releasedwhen a phosphate group is cleaved from the ATP molecule

23

the major fuel source used by the working muscle during long duration physical activity is

fatty acids

24

what is not a reason fat becomes an energy source for trained athletes

replaces carbohydrates as an energy source dduring prolonged, intense training

25

where in the body do we find the greatest torage of potential energy

body fat

26

at rest, the bodys fuel source is primarily

fat

27

our bodies store glycogen at the highest rate _____ hours after exercise

24

28

When would carbohydrate loading not be beneficial

weightlifting

29

what is not a side effect of carbohydrate loading

improved performance

30

what best dexcribes dr. barry sears the zone diet

high-protein diet designed for competitive athletes

31

in physical activity lasting less than 1 hour, the ost appropriate fluid replacement is _____

plain water

32

what ergogenic aid has been banned in the US

gamma-hydroxybutyric acid GHB

33

what is the cause of sports anemia

increased plasma volume due to training

34

some athletes believe that caffeine can enhance athletic performance because it has been sow to

increase the use of fatty acids as a fuel source

35

why are the B vitamins especially important to an athlete

the B vitamins are directly involved in energy metabolism