Cardiac Output | Stroke Volume | Red Blood Cells and Plasma Volume | Heart Rate | Random |
---|---|---|---|---|
True
True or False: Cardiac output matches the amount of oxygen consumption for a given exercise intensity
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False
True or false: The Frank Starling mechanism decreases the force of contraction generated within the heart
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True
True or false: Hematocrit typically decreases with intense training
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False
True or false: Resting heart rate increases with aerobic training
|
Oxygen
What is carried in the blood that the muscle needs?
|
False
True or false: Sub-maximal cardiac output increases with aerobic training
|
False
True or false: The average stroke volume of a trained athlete at rest is 50-70 ml/beat
|
True
True or false: the turnover rate of RBC's is often higher in aerobically trained athletes
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True
True or false: Heart rate recovery is faster for individuals who are aerobically trained
|
Increased capillarization, recruitment of existing capillaries, better redistribution from inactive organs, and increased total blood volume
Name 2 of the 4 mechanisms for improving blood flow to active muscle
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14-20 L/min
What is the average cardiac output max for an untrained aerobic athlete?
|
True
True or false: larger people have larger hearts and greater blood volumes, and thus have higher stroke volumes
|
False
True or false: Oncotic pressure decreases as a result of the plasma protein concentration increasing
|
True
True or false: at given workloads, aerobically trained hearts do not have to work as hard
|
less than 60 bpm
Bradycardia is approximately how many beats per minute?
|
20-35 L/min
What is the average cardiac output max for a trained aerobic athlete?
|
Increases, decreases
End diastolic volume ______ , while end systolic volume ______ .
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Albumin
What is the major plasma protein that reabsorbs water from the interstitial fluid?
|
False
True or false: Heart rate recovery is a great direct index of cardio-respiratory fitness
|
Elevated parasympathetic/vagal tone
Why is the resting heart rate lower for aerobically trained individuals?
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Positive linear correlation
What is the correlation between cardiac output and VO2 max?
|
Rest, Sub-maximal, & maximal intensities
At what intensities does stroke volume increase with training?
|
Anti-diuretic hormone and aldosterone
Name 2 hormones that cause re-absorption of water and sodium in the kidneys
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Sinoatrial node remodeling
What is the likely physiological reason why sub-maximal heart rates are lower in aerobically trained athletes?
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Pathological bradycardia and training-induced bradycardia, sinoatrial node remodeling
Name at least two causes of bradycardia shared from chapter 11
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