Chapter 3: bioenergetics of exercise and training Flashcards

1
Q

this begins at approx. 50-60% of VO2max

A

Lactate threshold

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2
Q

this occurs when the concentration of blood lactate reaches 4 mmol/l

A

onset of blood lactate accumulation (OBLA)

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3
Q

Total energy yield from the oxidation of one glucose molecule: (slow glycolysis) substrate level phosphorylation

A

4 (2net gain –> 2 in 4out)

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4
Q

Total energy yield from the oxidation of one glucose molecule: (slow glycolysis) oxidative phosphorylation

A

6

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5
Q

Total energy yield from the oxidation of one glucose molecule: (Krebs cycle) substrate-level phosphorylation

A

2

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6
Q

Total energy yield from the oxidation of one glucose molecule: (Krebs cycle) oxidative phosphorylation

A

24

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7
Q

Total energy yield from the oxidation of one glucose molecule: (Krebs cycle) via GTP

A

4

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8
Q

Total energy yield from the oxidation of one glucose molecule: (slow glycolysis, Krebs cycle) total

A

40 (38 if starting from blood glucose) 38 net gain

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9
Q

Primary energy system used (time, intensity): 0-6s, extremely high

A

phosphagen

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10
Q

Primary energy system used (time, intensity): 6-30s, very high

A

phosphagen and fast glycolysis

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11
Q

Primary energy system used (time, intensity): 30s-2m, high

A

fast glycolysis

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12
Q

Primary energy system used (time, intensity): 2-3m, moderate

A

fast glycolysis, and oxidative system

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13
Q

Primary energy system used (time, intensity): >3min, low

A

oxidative system

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14
Q

This has the greatest effect on EPOC

A

intensity

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15
Q

Interval training to train specific energy systems (%of maximum power, typical exercise type, range of work-rest period ratios): phosphagen

A

90-100%
5-10s
1:12 to 1:20

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16
Q

Interval training to train specific energy systems (%of maximum power, typical exercise type, range of work-rest period ratios): fast glycolysis

A

75-90%
15-30s
1:3-1:5

17
Q

Interval training to train specific energy systems (%of maximum power, typical exercise type, range of work-rest period ratios):fast glycolysis and oxidative

A

30-75%
1-3m
1:3 to 1:4

18
Q

Interval training to train specific energy systems (%of maximum power, typical exercise type, range of work-rest period ratios):oxidative

A

20-30%
>3m
1:1 to 1:3

19
Q

Cori cycle

A

Lactate transported to liver - transported to glucose
this makes your lactate threshold your ability to control the amount of lactate in your body

20
Q

What slows you down as fatigue builds

A

H ion in blood is what slows you down and builds fatigue