1. Success in sport competition such as a 220-yd sprint run requires a highly tr
ID: 3521887 • Letter: 1
Question
1. Success in sport competition such as a 220-yd sprint run requires a highly trained:
aerobic energy system
lactic acid energy system
ATP-CP energy system
b and c
2. For the average human, blood lactate:
begins to accumulate significantly at a point that is about 55-65% of Vo2 max
begins to accumulate significantly only when the Vo2 max is reached
can be used as an energy fuel by the heart and skeletal muscles
a and c
3. Which of the following is false concerning the RER?
RER for carbohydrate is 1.00
RER for lipid is 0.90
RER for 50% CHO and 50% lipid is 0.85
a, b, and c are all false
4. RER is computed as:
CO2 produced x O2 consumed
CO2 produced x O2 consumed x N2 correction factor
CO2 produced ¸ O2 consumed
O2 consumed ¸ CO2 produced
5. As a result of long term aerobic training the body tends to depend more on __________ as a substrate for metabolism
a. fat
b. carbohydrate
c. protein
d. there is no change in substrate
6. As a result of aerobic training, the lactate threshold occurs at:
a higher percentage of maximal O2 uptake
a lower percentage of maximal O2 uptake
c. a higher velocity of running (absolute exercise intensity)
d. both a and c
7. Lactate threshold during a graded exercise test is best used as a predictor of:
muscle strength
muscle endurance
distance running performance
sprint performance
8. The single best indicator of one's ability to sustain high intensity aerobic exercise is:
Maximal oxygen debt
Maximal oxygen deficit
VO2 max
Maximal Ventilation
Explanation / Answer
1. b and c
For short sports immediate energy is required. Lactic acid system is anaerobic respiration and ATP CP system provides energy.
2. a and c
When lactic acid reaches a certain level lactate starts to form and this lactate is used as energy source in various tissues.
Related Questions
Navigate
Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.