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BPK 143 > Week 7 > Flashcards

Week 7 Flashcards

1
Q

Energy definition

A

the capacity to perform work

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2
Q

energy is required for

A
  • muscle contraction
  • digestion
  • nerve conduction
  • gland secretion
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3
Q

Power definition

A
  • the rate of change of energy
  • how quickly you can perform work
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4
Q

Adenosine Trihosphate

A

phosphate bonds release energy when they are broken
- the immediate energy source for muscle contraction

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5
Q

ATP Equation

A

ATP -> ADP + Pi + Energy

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6
Q

Creatine Equation

A

CP -> C + Pi + Energy

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7
Q

Anaerobic production of ATP

A

do not require oxygen delivery to the blood to produce ATP

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8
Q

Aerobic production of ATP

A

do require oxygen delivery to the blood to produce ATP

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9
Q

The Phosphagen System

A
  • immediate energy system
  • important for high energy output activities
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10
Q

The phosphagen system uses

A

uses stored ATP and PC to make ATP by resynthesizing ATP with CP bond energy

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11
Q

Peak Power is used in activities

A

that only take a few seconds or less
- uses stored ATP and does not rely on CP to restore ATP

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12
Q

sustained power is where the athlete is

A

maintaining high power output for several seconds
- relys on CP stores to resynthesize ATP

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13
Q

The Glycolytics System uses

A

stored glucose or glycogen as fuel
- produces lactate

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14
Q

Glycolysis defintion

A

is the chemical breakdown of glycogen/glucose from the muscle or liver

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15
Q

Glucose can be made available through

A
  1. passing from blood through the muscle cell membrane into the cell interior (2ATP)
  2. split from glycogen stores in the muscle itself (3ATP)
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16
Q

Anaerobic glycolysis can produce

A

ATP raidly to meet energy requirements during severe exercise when oxygen demand is greater than oxygen supply

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17
Q

High rates of ATP production by glycolysis cannot

A

be sustained for more than 60-90 seconds, causing local muscle fatigue

18
Q

The Oxidative system

A

Aerobic system
- predominate in life & lower instensity/longer duration activities
- can make use of carbs/fats/proteins

19
Q

Aerobic Carbohydrate breakdown

A
  1. Glycolysis produces pyruvate
  2. pyruvate converted into Acetyl Co-A
  3. Acetyl CoA enters Citric Acid cycle producing H+ and e-
  4. H+ and e- enter ETC
  5. ATP produced
20
Q

What breakdown, anaerobic or aerobic produced more ATP

A
  • Aerobic = 36-40
  • Anaerobic = 2-3
21
Q

1g of fat produces

22
Q

1g of carbs produces

23
Q

1g of protein produces

24
Q

Aerobic breakdown of Fatty Acids

A

Fat
Fatty acids
beta oxidation
Acetyl CoA
Krebs cycle
ETC
CO2 + H20 + ATP

25
Protein metabolism
- least preferred form of fuel - used when carbohydrate stores are running low
26
Aerobic breakdown of protein
protein aa deamination krebs ETC CO2 + H20 + ATP
27
Human Energy Systems Graph
1. ATP 2. CP 3. Anaerobic Glycolysis 4. Aerobic Glycolysis (glucose) 5. Aerobic Lipolysis (fat/protein)
28
Excess post-exercise oxygen consumption (EPOC)
- rate of oxygen consumption increases dramatically after exercise - rapid and slow phase
29
EPOC is caused by
- rapid phase is caused by phosphogen stores replenishing - slow phase is caused by a increased body temp which increases the rates of chemical rxns - also a effect from exercise hormones increasing metabolism, energy needed for tissue repair/redistribution of ions, oxygen is required for the heart and respiratory muscles
30
Recovery time
- variable, but when little acidity/lactate is produced recovery is rapid - if body temp is not elevated, EPOC will not be large
31
Active aerobic recovery
helps speed up the return of muscle acidity levels to normal by speeding up the rate of blood flow throughout the muscle
32
Recovery times required depend on
exercise intensity and duration - fatigue is also influenced by CNS/PNS, psychological factors, muscle damage
33
Trained athletes can
shift the lactate curve to the right - meaning that they can exercise at a higher intensity and have the same lactate level as a untrained individual at a lower intensity because they clear lactate from the blood more efficiently
34
Fatigue definition
the inability to maintain your desired exercise intensity - LT1 (talk test) fatigue can be due to boredom or repeated events -LT2 (vo2max) fatigue can be due to inability to buffer muscle acidity at that rate
35
Lactate does not cause
- fatigue or muscle soreness
36
DOMS cause
delayed onset muscle soreness is caused by damage to muscle fibres and connective tissue
37
CNS fatigue
intense repeated bouts of strenous exercise causes nt's to become depleted, reducing performance
38
Central muscle weakness causes
an overall body, sense of deprivation
39
Peripheral muscle weakness causes
local, muscle-specific incapacity to work
40
Central components of muscle fatigue result in
a reduction in the nueral drive to working muscles, causing a decline in force output
41
The best way to remove lactate from the muscles during recovery is
light exercise , approx 35% of VO2max

BPK 143 (11 decks)

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