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Biology
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12 Dec 2019

As a result of training, which of the following occurs? (Mark ALL that apply)

decreased heart rate at rest

increased stroke volume at rest

decreased systolic blood pressure at rest

increased maximum lactate concentration during high intensity exercise

increased VO2 max

increased maximum tidal volume and breathing rate

increased blood volume

increased glycogen storage capacity of muscles

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Related questions

1. Which cardiorespiratory parameters change during the transition from rest to exercise, andwhich of these can exhibit plasticity due to aerobic training? In your answer, you should include terms and processes such as gas transport cascade, VO2,ventilation, tidal volume, total pulmonary ventilation, alveolar ventilation, dead space, PAO2,diffusion, hemoglobin, Hb-O2 dissociation curve, Hb-O2 affinity, hematocrit, blood oxygencarrying capacity, cardiac output, heart rate, pacemaker cells, SA node, funny channels, stroke volume, Frank-Starling mechanism, contractility, cardiac hypertrophy, preload, afterload, totalperipheral resistance, and arteriovenous O2 difference.

You are calculating an exercise intensity for a client with a VO2 max of 53.5 ml · kg · min-1. If he wanted to work at 65% of his VO2 max, what level of intensity, in ml · kg · min-1, would you suggest for him?

a. 30

b. 35

c. 43

d. 48

In general, when working with sedentary people to help them become active, a reasonable rate of progression (in terms of the number of additional minutes done per week) would be to increase time by about

a. 10%

b. 15%

c. 20%

d. 25%

One of your clients is 6 feet 3 inches (190.5 cm) tall and weighs 240 lb (109 kg). According to these values, his BMI is

a. 35.3 kg · m-2

b. 30.3 kg · m-2

c. 27.3 kg · m-2

d. 24.3 kg · m-2

After a 15-week endurance training program, the most likely effect of training on blood pressure (BP) would be:

a. an increased systolic pressure at maximal workloads

b. an increased diastolic pressure at maximal workloads

c. a decreased systolic pressure at submaximal workloads

d. no change in systolic pressure at submaximal workloads

After a 15-week endurance training program, which of the following responses would you expect to see (compared with pre-training) regarding stroke volume (SV)?

a. higher SV at submaximal workloads

b. lower SV at submaximal workloads

c. lower SV at maximal workloads

d. no change in SV at submaximal workloads

After a 15-week endurance training program, which of the following responses would you expect to see (compared with pre-training) regarding cardiac output?

a. higher cardiac output at maximal workloads

b. unchanged cardiac output at maximal workloads

c. lower cardiac output at submaximal workloads

d. unchanged cardiac output at submaximal workloads

e. a and d

Rest activity

min volume 19700ml air/min 43400 ml air /min

breathing rate 13breat/min 21

heartrate 72beats/min 112 beats/min

blood pressure 118/70 158/88

% O2 inhaled air 20.94% (.)2094ml O2/ml air) same

% O2 exhaled air 18.94% (.1894 ml O2/ml air) same

a) claculate Tidal volume [ml air/breath]
b) calculate Oxygen consumption (VO2) [ ml O2 consumed/min] -
c) calculate Oxygen content of arterial blood (CO2a) [ml O2/mlblood] -
d) calculate Oxygen content of venous blood (CO2v) [ml O2/ml blood]-
You need to know that there is 13.3 g hemoglobin/100 ml blood, and1.3
ml O2 binds to each gram of hemoglobin. Assume arterial blood is100%
saturated with oxygen, whereas mixed venous blood is 60%saturated
when the subject is resting.
e) caluclate Cardiac Output (CO) [ ml blood/min ] -
f) caulculate Stroke Volume (SV) [ ml blood/beat] -

g) Tidal volume [ml air/breath]
h) Oxygen consumption (VO2) [ ml O2 consumed/min]
i) Stroke Volume (SV) [ ml blood/beat]
Assume change in stroke volume is the same as the change inpulse
pressure when going from rest to exercise - s
j) Cardiac Output (CO) [ ml blood/min ] -
k) Oxygen content of arterial blood (CO2a) [ml O2/ml blood] = sameas when resting
l) Oxygen content of venous blood (CO2v) [ml O2/ml blood] -

Now answer these questions:

1. By what multiplication factor (e.g. 2 times, 3 times, etc.)did oxygen consumption
increase over resting when the person exercised?
2. a. Did minute volume increase by the same factor that oxygenconsumption
increased? If not, what made up the difference?
b. Did cardiac output increase by the same factor that oxygenconsumption
increased? If not, what made up the difference?
3. What was most responsible for the change in minute volume? i.e.compare the
factorial change in breathing rate with that of tidal volume.
4. What was most responsible for the change in cardiac output? i.e.compare the
factorial change in heart rate with that of stroke volume.
5. Calculate total peripheral resistance during rest and exercise(see pg 21). What
physiological changes led to the change in peripheral resistance?In what part of the
body did they occur, and why is this adaptive?

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