Exercise Physiology: Theory and Application to Fitness and Performance 11th Edition by Scott Powers
the hypotenuse divided by the vertical rise.
the vertical rise per 100 units of belt travel.
References
Multiple Choice Difficulty: Easy
The term ergometry refers to
the measurement of heat production.
the measurement of work output.
the hypotenuse divided by the vertical rise.
the vertical rise per 100 units of belt travel.
References
Multiple Choice Difficulty: Easy
17.
Award: 10.00 points
18.
Award: 10.00 points
Calculating the work performed on a cycle ergometer requires that you know all of the following except
subject's body weight.
resistance against flywheel.
pedaling speed (i.e., distance traveled).
duration of exercise.
References
Multiple Choice Difficulty: Medium
Compared to a highly economical runner, runners that exhibit poor running economy would require
a lower VO 2 at any given running speed.
a higher VO 2 at any given running speed.
the same VO 2 at any given running speed.
None of these answers is correct.
References
Multiple Choice Difficulty: Medium
19.
Award: 10.00 points
20.
Award: 10.00 points
The treadmill angle (expressed in degrees) can be determined by
visual inspection of the angle of the treadmill.
trigonometric computations.
using a measurement device called an inclinometer.
Both trigonometric computations and using a measurement device called an inclinometer
answers are correct.
References
Multiple Choice Difficulty: Medium
The measurement of oxygen consumption during exercise can provide an estimate of metabolic rate.
The rationale behind the use of oxygen consumption to estimate metabolic rate is:
that measurement of oxygen consumption provides a direct estimate of how much
carbohydrate is used a fuel source.
that a direct relationship exists between oxygen consumed and the amount of heat produced
in the body.
that measurement of oxygen consumption provides a direct estimate of how much fat is used
a fuel source.
None of these answers is correct.
References
Multiple Choice Difficulty: Medium
21.
Award: 10.00 points
22.
Award: 10.00 points
During cycle ergometer exercise, net efficiency decreases as the work rate increases. The mechanism
to explain this observation is
the relationship between energy expenditure and work rate is curvilinear rather than linear.
the energy requirement of exercise decreases as work rate increases.
that, independent of work rate, oxygen consumption during exercise always increases over
time.
None of these answers is correct.
References
Multiple Choice Difficulty: Medium
Calculate the power output when an individual performs 700 joules of work in one minute.
11.7 watts
117 watts
42,000 watts
Power cannot be calculated with the information provided.
1 watt = 1 joule per second
References
Multiple Choice Difficulty: Hard
23.
Award: 10.00 points
24.
Award: 10.00 points
A subject performing a 10-MET activity would have an oxygen consumption of approximately
10 ml•kg -1 •min -1 .
25 ml•kg -1 •min -1 .
35 ml•kg -1 •min -1 .
45 ml•kg -1 •min -1 .
References
Multiple Choice Difficulty: Hard
Calculate the total amount of work performed in 5 minutes of exercise on a cycle ergometer, given the
following:
Resistance on flywheel = 30 Newtons
Cranking speed = 50 revolutions per minute
Distance traveled per revolution = 6 meters
1 joule = 1 newton-meter
9,000 joules
4500 joules
45,000 joules
Total work performed cannot be calculated given the information above.
1 joule = 1 Newton-meter
References
Multiple Choice Difficulty: Hard
25.
Award: 10.00 points
26.
Award: 10.00 points
Compute the power output (watts) during 60 seconds of treadmill exercise, given the following:
Treadmill grade = 10%
Horizontal speed = 100 meters per minute
Subject's body weight = 60 kg (i.e., force = 588.6 Newtons)
1 joule = 1 newton-meter
1 watt = 1 joule per second
1 kcal = 426.8 kpm
98.1 watts
981 watts
5886 watts
Power output cannot be calculated given the information above.
References
Multiple Choice Difficulty: Hard
Calculate net efficiency, given the following: