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WorksheetsPE 2020 - Unit 1 - AOS2 - SAC 2
Total questions: 10
Worksheet time: 10mins
Steady state usually occurs when:
The difference in oxygen concentration in the lungs equals that of surrounding blood vessels
Oxygen supply equals oxygen demand
Stroke volume x heart rate = 220 - age
There is a steady increase in oxygen supply as respiratory rate increases
When running on a treadmill that increases its speed every minute, which of the following is true:
Heart rate will increase linearly until maximum intensity is reached
Stroke volume will increase linearly until maximum intensity is reached
Respiratory rate will increase linearly and plateau sub-maximally
Tidal volume will increase linearly until maximum intensity is reached
Tidal Volume is a measure of:
The amount of air breather in/out per breath
The difference in oxygen concentration between the systemic and pulmonary circuits
How much oxygen is leaving the heart via the systemic circuit
The amount of blood pumped through the heart per beat
While running a marathon, when runners face an uphill section of the course their a-VO2 diff will:
Remain unchanged
Increase
Decrease
Plateau
During expiration, the:
Inter-costal muscle tension remains unchanged
Inter-costal muscles and diaphragm contract
Diaphragm contracts and the inter-costal muscles relax
Inter-costal muscles and diaphragm relax
Cholesterol is a naturally occurring substance in the body. Which statement about cholesterol is INCORRECT
Good cholesterol is called HDL and is responsible for removing superfluous cholesterol from the arteries
Saturated fats contain higher levels of LDL and contribute to higher levels of bad cholesterol.
Physical activity has no role in controlling cholesterol in the body
Oversupplies of cholesterol in arteries can lead to the development of plaque on artery walls
Asthma is a major inhibitor of physical activity if not managed properly. Which of the following statements best describes asthma?
Asthma is most common in elderly people, causing great respiratory problems during simple tasks like walking or climbing stairs
Asthma is a chronic condition of the oesophagus and prevents people fro swallowing effectively, resulting in indigestion during exercise
Asthma causes the muscles in the bronchioles to tighten, swell and narrow in diameter, reducing the amount of air that can flow through them
Asthma can only be treated by improving physical fitness
Which of the following diseases BEST describes the condition whereby the small arteries that supply the heart muscle with blood become blocked by fatty deposits?
Hypertension
Coronary Heart Disease
Stroke
Chronic Obstructive Pulmonary Disease
As exercise intensity increases, the tidal volume:
Plateaus before increasing until VO2 max is reached
Increases linearly up to VO2 max
Remains unchanged
Increases linearly and then plateaus at sub-maximal intensities
Endurance athletes, compared to untrained people, tend to have:
Larger tidal volumes
Greater respiratory rates
Higher core temperatures
Smaller stroke volumes
