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PHTH 517 > Energy systems > Flashcards

Energy systems Flashcards

1
Q

______ _______ = any bodily movement produced by skeletal muscle that results in a substantial increase in energy expenditure over resting levels.

A

Physical activity

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2
Q

_______ = physical activity performed on a repeated basis over an extended period of time with the intention of improving fitness or health

A

exercise

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3
Q

______ ______ = study of the body’s response to exercise and adaptation to exercise training to maximize human physical potential

A

exercise physiology

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4
Q

______ ______ = pattern of change in physiological variables during a single acute bout of physical exertion.

A

exercise response

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5
Q

What are the 4 things exercise response is based on?

A
  1. Exercise modality
  2. Exercise intensity
  3. Exercise duration
  4. Characteristics of the exerciser
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6
Q

What are the two main types of exercise?

A
  1. Aerobic

2. Resistance

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7
Q

What are the 3 domains of physical fitness?

A
  1. Cardiovascular-respiratory endurance
  2. Body composiiton
  3. Muscular fitness
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8
Q

A ________ is a fuel substance acted on by enzymes

A

substrate

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9
Q

The imbalance between _____:____ stimulates the breakdown of other stored energy-containing compounds to synthesize ATP.

A

ATP:ADP

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10
Q

What is the total net ATP production from glucose metabolism ?

A

32

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11
Q

Cytosol = _____ energy production

A

anaerobic

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12
Q

Mitochondria = _______ energy production

A

aerobic

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13
Q

_____ and ______ determine the energy system and metabolic mixtures used during exercise

A

intensity; duration

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14
Q

You could theoretically progress indefinitely when exercising assuming it is primarily reliant on aerobic energy system (T/F).

A

True!

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15
Q

What are 2 limitations to steady state rate aerobic metabolism?

A
  1. Fluid loss and electrolyte depletion

2. Maintaining adequate reserves of both liver glycogen for CNS function and muscle glycogen to power exercising

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16
Q

Blood lactate (does/does not) accumulate at all levels of exercise.

A

Does not

17
Q

During light to moderate exercise, blood lactate production = rate of __________.

A

disappearance

18
Q

When do blood and muscle lactate levels increase? Why does this happen?

A

When ATP formation fails to keep pace with its rate of use; the ETC cannot process all the hydrogen being produced

19
Q

What energy system has the least trainability?

A

ATP-PCr

20
Q

The anaerobic glycolysis system has a lot of potential for trainability (T/F)

A

TRUE

21
Q

What occurs to the blood lactate threshold with training?

A

increases

22
Q

Is plateau or peak in VO2 usually measured in clinical populations?

A

peak

23
Q

As we age, VO2 max usually goes down due to what factor?

A

cardiac output

24
Q

What are 7 factors affecting VO2 max?

A
  1. Heredity
  2. Gender
  3. Training state
  4. Body composition
  5. Age
  6. Exercise mode
  7. Clinical limitations
25
Q

What is the minimal VO2 needed for independent function?

A

12-15 ml/kg/min

26
Q

“bonking” or “hitting the wall” is a sensation endurance athletes can experience that most often corresponds to the depletion of what?

A

glycogen/glucose

27
Q

Functional capacity is not impacted by gender, age and exercising testing method (T/F).

A

FALSE

28
Q

What are the normative values for men 20-29 considered “superior”?

A

65+

29
Q

What are the normative values for men 20-29 considered “fair”?

A

45-49

30
Q

What are the normative values for women 20-29 considered “very poor”?

A

22-27

31
Q

What are the normative values for women 20-29 considered “superior”?

A

56+

32
Q

What are the normative values for women 20-29 considered “fair”?

A

35-40

PHTH 517 (16 decks)

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