Ex Phys (Midterm 2)

Front 1

Specificity of metabolic capacity and exercise performance

Back 1

A high VO2max in one activity does not ensure a high VO2 in another

Front 2

Generality of metabolic capacity and exercise performance

Back 2

Some individual s with a high VO2 in one activity possess above average VO2max in another dissimilar activity

Front 3

Specificity vs generality

Back 3

High degree of specificity

E.g. training aerobic power doesn't contribute to anaerobic power

Front 4

Immediate energy system used for

Back 4

First 10s

Front 5

Short term energy used for

Back 5

30sec to 2min

Front 6

Immediate energy system (measured by)

Back 6

(Anerobic alatate)

Measured by

1. Size of intramuscular ATP-PCr pool

2. Depletion rate if that pool in all out exercise

3. Alactate portion of EPOC

Front 7

Short term energy system

Back 7

1. After a few seconds of work. Anerobic glycolysis (lactate) generates ATP

2. Measured by lactate levels

Front 8

Example of performance test to evaluate short term energy

Back 8

E.g. all out run/bike/shuttle test

Front 9

Factors that effect short term energy system

Back 9

1. Age

2. Gender

3. Motivation

4. Skill

5. Body size

Creates difficultly in selecting suitable criterion for test

Front 10

Wingate test

Back 10

30sec submacinal effort on cycle ergometer

Measures: peak power, average and relative power, anaerobic fatigue & capacity & depletion

Front 11

Physiologic test to evaluate. Short term energy

Back 11

1. Measure blood lactate

2. Measure glycogen depletion. (take muscle sample)

Front 12

Factors that affect anerobic energy transport capacity

Back 12

1. Training(anaerobic): greater lactate generation, greater depletion of muscle glycogen

2. Capacity to buffer acid metabolites

3. Motivation (increase pain tolerance)

4. Nutrition

Front 13

Aerobic energy: long term energy system

Back 13

VO2 max (large part of endurance performance)

- increases with increase CV performance

Front 14

Determinate of endurance performance

Back 14

1. VO2 max

2. Capillary density

3. Level of aerobic enzymes

4. Mitochondrial size and number

5. Muscle fiber type

Front 15

VO2 peak

Back 15

Highest value of O2 consumption measured durning graded exercising see test

- respiratory exchange ratio >1.15 (above 1 means your above max VO2/max heart rate!)

Front 16

Factors that affect max VO2

Back 16

1. Mode of exercise (muscle mass and skill required)

2. Heredity (up to 93% depends on genetics)

3. State of training

4. Gender (women lower due to less muscle mass)

5. Body size and composition

6. Age

Front 17

Advantages to submacinal aerobic capacity test

Back 17

1. Decrease cost

2. Decrease time

3. Decrease risk

Front 18

Disadvantages in submacinal aerobic capacity predication test

Back 18

1. Error in estimate

2. Individual variability

Front 19

Assumptions required for HR predictions

Back 19

1. Linearity of HR and O2 consumption throughout all intesitys

2. Similar max HR for all subjects (varies!)

3. Constant economy and mechanical efficiency throughout exercise

4. Limit daily variations in HR

Front 20

Dalton's law

Back 20

Total pressure = sum of partial pressures of all gases in mixture

Front 21

Barometric pressure at sea level

Back 21

760mmHg

Front 22

PO2 at sea level

Back 22

760 x 0.21 = 159mmHg

Front 23

O2 dissociation curve has what type of relationship

Back 23

Sigmoidal

Front 24

PO2 in alveolar and arterial blood

Back 24

103

98

Front 25

PO2 of capillary

Back 25

40mmHg

Front 26

O2 delivery depends on

Back 26

1. Gas exchange (mouth to blood)

2. Gas transport (dissolved in plasma and bound to Hb)

Front 27

What is PO2 at humidified air

Back 27

149mmHg