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WorksheetsAcute Responses to exercise task
Total questions: 14
Worksheet time: 7mins
The level of response of acute physiological changes within the body systems when participating in physical activity is dependent on:
duration of the activity
intensity of the activity
type of activity
all of the above
Which of the following is not an acute respiratory response to increased exercise intensity?
Increased tidal volume
Increased stroke volume
Increased gaseous exchange at the lungs
Increased intercostal muscle contractions
The most important factor for increasing cardiac output from submaximal to maximal exercise is
Heart rate
Stroke volume
Arteriovenous oxygen difference
Redistribution of blood flow
Acute responses to exercise include:
A decrease in blood volume, increase in oxygen consumption and increase in intramuscular energy substrates.
A decrease in oxygen consumption, decrease in blood volume and decrease in intramuscular energy substrates.
An increase in the a-vO2 difference, increase in oxygen consumption and increase in blood flow to the working muscles.
An increase in oxygen consumption, decrease in intramuscular energy substrates and increase in blood volume.
During continuous exercise the heart rate increases and the force of contraction is also greater. This results in:
An increase in diastolic blood pressure.
An increase in systolic blood pressure.
An increase in diastolic and systolic blood pressure.
No change to systolic blood pressure.
During exercise the cardiac output (Q) of an individual can be determined by which of the following parameters?
Stroke volume multiplied by respiratory frequency
Tidal volume multiplied by respiratory frequency
Stroke volume multiplied by heart rate
Stroke volume multiplied by arterio-venous oxygen difference
Gas exchange in the muscle occurs at the tissue-capillary interface via diffusion. During physical activity which condition below outlines why diffusion takes place?
Blood oxygen levels are high and muscle oxygen levels are low.
Blood oxygen levels are low and muscle oxygen levels are high.
Alveoli oxygen levels are high and blood oxygen levels are low.
Alveoli oxygen levels are low and blood oxygen levels are high.
At the commencement of physical activity, blood flow is redistributed around the body. Which of the following body parts is blood flow reduced to?
Heart
Muscles
Internal organs
Skin
Ventilation is:
A respiratory response to exercise
Controlled by the respiratory centre in the brain
The product of tidal volume and respiratory rate
All of the above
Steady state occurs when:
Heart rate equals 220 minus age
Oxygen supply to muscles is able to keep up with oxygen demand
Oxygen diffusion from the lungs to pulmonary capillaries moves across concentration gradients
There is a steady flow of oxygen from the lungs to the rest of the body.
The arteriovenous oxygen difference
Decreases in response to increased exercise loads
Increases in response to increased exercise loads
Plateaus when VO2 max is achieved
Is primarily fuelled by the aerobic energy system
Systolic blood pressure:
Is measured as part of the systemic circulation when blood is pumped from the left-hand side of the heart after it has been received from the lungs and is oxygenated.
Is always higher than diastolic blood pressure.
Rises rapidly during exercise as more blood is pumped through the heart.
All of the above.
During a period of oxygen deficit
Oxygen supply is less than oxygen demand.
Oxygen demand is less than oxygen supply.
Oxygen supply is equal to oxygen demand.
The aerobic energy system is predominant.
Maximal exercise will result in the following acute respiratory response:
Decreased tidal volumes
Large oxygen deficits
A small EPOC
Increased reliance upon PC and an energy substrate
