AEROBIC POWER AND CAPACITY QUIZ
TRUE / FALSE (1 MARK EACH)
Oxygen debt occurs at the start of activity
An athlete working at 60%MHR would be using PC as his predominant fuel source.
Alactacid debt is the quickest debt to be paid back
Myoglobin is found in the blood
Cardiac output is represented in formula as Q
Rest recovery is best for athletes after a 1500m run
Blood pressure readings show diastolic pressure over systolic pressure
A typical blood pressure reading is 120/80
Oxygen intake is concerned with the respiratory system
Oxygen uptake is concerned with the respiratory system
MULTIPLE CHOICE (2 MARKS EACH)
1. The myocardium (outside of the heart muscle) is supplied by blood from the:
A. pulmonary artery
B. coronary artery
C. left ventricle
D. pulmonary circulation
2. Which of the following factors affect resting heart rate?
A. Aerobic Capacity
B. Smoking
C. Body temperature
D. All of the above
3. The left atrium receives blood directly from the:
A. aorta
B. pulmonary arteries
C. pulmonary veins
D. superior and inferior vena cava
4. Which of the following gives a correct path of blood when flowing around the body?
A. LV, LA, RV, RA, tissues
B. LV, tissues, lungs, RA, RV, LA
C. LV, lungs, RA, RV, tissues, LA
D. LV, tissues, RA, RV, lungs, LA
5. Blood leaves the left ventricle through a blood vessel called the:
A. pulmonary artery
B. pulmonary vein
C. aorta
D. vena cava
6. The lungs are covered with thin transparent membranes, known as:
A. pericardium
B. pleura
C. diaphragm
D. peritoneum
7. The quantity of oxygen carried in the blood depends on its combining with which of the following:
A. hydrochloric acid
B. carbonic acid
C. Myoglobin
D. Haemoglobin
8. In normal blood pressure reading the larger figure refers to:
A. the pressure on the walls of the arteries at the moment of ventricular contraction
B. the pressure on the cardiac muscle
C. the pressure on the walls of the veins during contraction of the heart
D. the pressure on the walls of the arteries at the moment of relaxation of the heart muscle
9. Blood that enters the heart through the vena cava:
A. is low in oxygen and is circulating through the heart to the lungs to obtain oxygen.
B. Is deoxygenated and is circulating through the muscles which require oxygen
C. Is highly oxygenated and is circulating to the muscles which require oxygen
10. The basic difference between the veins and the arteries in the systemic circuit is that:
A. veins carry a higher proportion of oxygen
B. many veins possess valves which prevent backflow of blood
C. blood pressure is lower in the arteries
D. the wall of a vein is thicker and stronger than that of the corresponding artery
11. In which of the following vessels does blood have a highest concentration of oxygen?
A. Pulmonary vein
B. Pulmonary artery
C. Venules
D. Superior Vena Cava
12. In the lungs exchange of gases occurs in the:
A. bronchii
B. bronchioles
C. alveoli
D. trachea
13. Which of the following DOES NOT occur to enable inspiration?
A. diaphragm rises into the thoracic cavity
B. The pressure in the lungs falls
C. The intercostals contract
D. The rib cage moves upward and outward
14. VO2 MAX refers to:
A. the maximum amount of oxygen you can breathe out in one breath
B. the size of your lungs
C. the maximum amount of oxygen you can consume and utilize in your body
D. The relationship between tidal volume and the rate of breathing.
15. The degree to which the transfer of oxygen from blood to muscle tissue occurs is reflected in:
A. cardiac output
B. diastolic blood pressure
C. haemoglobin uptake
D. arterio-venous oxygen difference
16. An athletic subject was suddenly found to be suffering from anaemia (reduced number of red blood cells). Which of the following would occur:
A. During an endurance event the athlete’s heart rate would be lower than usual.
B. When tested, the athlete’s maximum oxygen consumption would be reduced
C. When competing on the track in the 10,000 metres, the athlete would achieve a personal best time
D. The athlete would recover more quickly than usual after a hard aerobics session
17. When your heart rate levels out during sub maximal exercise, this indicates:
A. oxygen availability is sufficient to meet energy demands
B. a high level of aerobic fitness
C. that lactic acid is restricting muscle contraction
D. that muscle glycogen stores have been depleted
18. Two individuals, one trained athlete (resting heart rate 50bpm) and the other a relatively sedentary person (resting heart rate 75bpm), both work sub-maximally on a bicycle ergometer at the same workload for 15 minutes. Both are the same weight. Once a steady state had been attained:
A. the trained athlete would have a higher heart rate
B. the untrained person would have a higher heart rate
C. their heart rates would be the same
D. Their heart rates would be dependent upon their respiratory rates.
19. During recovery from exercise our oxygen consumption continues above resting levels for a considerable time. The initial phase of the oxygen debt lasting for 2-3 minutes, is the:
A. alactacid debt component, concerned with the removal of lactic acid
B. lactacid debt component, concerned with the removal of lactic acid
C. lactacid debt component, concerned with the restoration of phosphor-creatine and ATP
D. alactacid debt component, concerned with the restoration of phosphor-creatine and ATP
20. A period where oxygen uptake is less than that required for the amount of work being performed is called:
A. oxygen deficit
B. oxygen debt
C. steady state
D. glycogen fatigue
21. In trained athletes, which of these factors increases proportionally the most from resting levels during sever endurance exercise lasting 5 to 10 minutes?
A. heart rate
B. stroke volume
C. cardiac output
D. blood pressure
22. Which of the following is the best example of oxygen deficit?
A. The marathon runner sparing himself over the first 10 kms
B. The 400m runner feeling his legs growing heavy in the home straight
C. The 100m runner breathing heavily for minutes after the race.
D. The sprinter running his race without really needing to breathe
23. After muscle contractions, the concentration of oxygen in the blood leaving the muscle, compared with the blood entering is:
A. lower
B. the same
C. higher
D. Dependent on the myoglobin concentration in the red blood cells.
24. Increased blood flow to the working muscle is partly due to:
A. a redistribution of blood flow away from inactive organs
B. decreased cardiac output
C. increased friction in the blood vessel walls
D. all of the above
25. Increased amounts of myoglobin in muscles occurs due to training. This would be beneficial in aerobic activity because myoglobin:
A. provides energy to form ATP
B. facilitates the diffusion of oxygen from the blood to the mitochondria
C. is the muscular part of the heart, and a stronger heart enables faster blood circulation
D. will enable a quicker diffusion of oxygen from the lungs to the blood
26. The effective use of oxygen in the aerobic energy system relies upon adequate sources in the muscle of:
A. haemoglobin
B. fats and glycogen
C. ATP and creatine phosphate
D. Proteins
27. Which of the following tests would be considered useful for the assessment of endurance fitness (aerobic power)?
A. Margaria ‘stair climb’ test
B. 50 metre dash
C. Astrand bicycle ergometer test
D. Vertical Jump Test
28. Which of the following groups of activities rely primarily on energy derived through aerobic sources?
A. 5000m run, soccer penalty kick, gymnastics vault
B. 50m swimming sprint, marathon, cross country skiing
C. 50m swimming sprint, soccer penalty kick, gymnastics vault
D. 1km swim, cross country skiing, 5000m run.
29. Aerobic capacity is also known as:
A. LIP
B. Anaerobic threshold
C. Cardiovascular endurance
D. Agility
30. Steady state occurs when:
A. LIP occurs
B. Myoglobin supplies enough glycogen to the muscle
C. Oxygen demand meets supply
D. There is a rapid rise in ATP production
SHORT ANSWER (MARKS INDICATED)
1. Draw a simplified diagram of the chambers of the heart and major blood vessels to illustrate the circulation of blood during one complete cycle. Use 2 colours or clearly labelled arrows to indicate blood flow of oxygenated blood and de-oxygenated blood. (8)
2. Outline the difference between Systemic, Coronary and Pulmonary circulation. (3)
3. How does gaseous exchange occur in the lungs? (3)
4. Define ventilation. (2)
5. Define Stroke Volume and Cardiac Output. (4)
6. At rest an individual has a stroke volume of 70ml and a heart rate of 72bpm. What is his cardiac output? (2)
7. Explain why oxygen levels remain above resting levels when exercise stops? (3)
8. Complete the table below which shows some of the functional characteristics of slow twitch and fast twitch muscle fibres. Use the words ‘high’ or ‘low’. (7)
Characteristic / Slow Twitch / Fast TwitchMyoglobin content
Triglyceride stores
Glycogen stores
Mitochondrial density
Oxidative enzyme activity
Capillary Density
Recruitment for sub maximal exercise
9. Explain what blood pressure is. (2)
10. What is lactacid debt (draw diagram) and select an activity / event that would produce a large lactacid debt. (4)