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ACBSP > Exercise Physiology > Flashcards

Exercise Physiology Flashcards

1
Q

Which energy system uses stored phosphagens as the substrate?

A

ATP-PCr energy system

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2
Q

Which substrate does the ATP-PCr energy system use?

A

Stored Phosphagens

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3
Q

Which energy system uses glycogen and glucose, but not fats or proteins, as the substrate?

A

Glycolytic energy system

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4
Q

Which energy system uses glycogen, glucose, fats, and proteins as the substrate?

A

Aerobic Metabolic energy system

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5
Q

Which substrate does the Glycolytic energy system use?

A

Glycogen and Glucose, not fats or proteins

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6
Q

Which substrate does the Aerobic Metabolic energy system use?

A

Glycogen, Glucose, Fats, and Proteins

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7
Q

How is phosphate bond energy aquired?

A

ATP -> ADP + P + Energy

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8
Q

How does the PCr energy system create ATP?

A

PCr + ADP -> Cr + ATP

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9
Q

What is the Adenylate kinase reaction?

A

2ADP -> 1 ATP + 1 AMP

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10
Q

Definition:

What is Biological Burning?

A

Definition:

The removal of electrons from hydrogen (oxidation), passed to oxygen (reduction)

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11
Q

Definition:

Electron Transport

A

Definition:
Catalysis by dehydrogenase enzymes
NAD, FAD

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12
Q

Definition:

Oxidative Phosphorylation

A

Definition:

The transfer of electrons from NADH2 and FADH2 to Oxygen

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13
Q

What are the three primary antioxidant systems?

A 
Superoxide Dismutase (SOD)
Catalase
Glutathione Peroxidase (GPx)
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14
Q

What does Superoxide Dismutase do?

A

Dismutation of Superoxide (ROS) to H2O2 and oxygen

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15
Q

What does Catalase do?

A

Converts H2O2 to water and oxygen

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16
Q

What does GPx do?

A

Uses reduced glutathione to reduce H2O2 to oxidized glutathione and water

17
Q

What is the enzymatic pathway for detoxification of ROS?

A

ROS + H2O -> (SOD) -> H2O2 + O2

H2O2 -> (Catalase & GPx) -> H20 + O2

18
Q

How are free radicals produced?

A

2-5% of all oxygen consumed in the mitochondria forms free radicals

19
Q

What are the three steps of energy transfer and exercise?

A

Glycolysis
Lactic Acid System
Recovery from Exercise

20
Q

What is the rate limiting step of glycolysis?

A

Conversion of F6P to F-1,6-BiP, catalyzed by PFK

21
Q

Definition:

Blood Lactate Threshold

A

Definition:

Highest Oxygen Consumption with less than 1.0mM/L increase in Blood Lactate Accumulation

22
Q

Definition:

Onset Blood Lactate Accumulation

A

Definition:

A systematic increase to 4.0mM/L

23
Q

What is the role of Sodium Bicarbonate in athletic performance?

A

NaHCO3 acts as a buffer to counter acidity from Lactate accumulation

24
Q

What is the recommended starting dose for Sodium Bicarbonate?

A

0.2-0.4g/kg of body weight
1-2hrs pre-exercise
in flavored water or capsules

25
Q

Definition:

Max VO2

A

Definition:

The point at which oxygen consumption plateaus and shows no further increase in workload

26
Q

What is the Max VO2 in Women?

A

Runners - 65
Swimmers - 56
Sedentary - 39

27
Q

What is the Max VO2 in Men

A

Runners - 80
Swimmers - 75
Sedentary - 44

28
Q

Definition:

Oxygen Deficit

A

Definition:
The difference between the total oxygen consumed and the total oxygen that should have been consumed if a steady rate of aerobic metabolism has been reached at the start of the exercise

29
Q 
Definition:
Oxygen Debt (EPOC)
A

Definition:

Oxygen consumed during the recovery that exceeds the amount of oxygen that would be consumed at resting levels.

30
Q

Definition:

EPOC

A

Definition:

Excess Post-exercise Oxygen Consumption

31
Q

What is the smallest contractile unit of the skeletal muscle?

A

The Sarcomere

32
Q

Definition:

Muscle Unit

A

Definition:

A single alpha motor neuron and all of the muscle fibers that neuron activates

ACBSP (4 decks)

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