When measuring VO2max in terms relative to total body mass (mL/kg/min), what is the primary reason why women have lower VO2max values?
Added by Joseph A.
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VO2max is the maximum rate of oxygen consumption measured during incremental exercise, reflecting an individual's aerobic capacity and cardiovascular fitness. Show more…
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What is the physiological reason for using submaximal heart rate to predict vo2 max during submaximal lower body-based tests
Sri K.
Cardiorespiratory fitness is widely recognized as a major component of overall physical well-being. Direct measurement of maximal oxygen uptake (VO2max) is the single best measure of such fitness, but direct measurement is time-consuming and expensive. It is therefore desirable to have a prediction equation for VO2max in terms of easily obtained quantities. A sample is taken and variables measured are age (years), time necessary to walk 1 mile (mins), and heart rate at the end of the walk (bpm) in addition to the VO2 max uptake. The equation from a multiple regression is (V02) = 0.054*(age) + 0.023*(HR) - 0.01*(time) + 6.892. If a person is 48 years old, has a heart rate of 121 bpm, a walking time of 14 minutes, and a maximum oxygen intake of 20.131 L/min, the residual would be 8.004. What is the best interpretation of this residual? Question options: 1) The max oxygen intake is 20.131 L/min larger than what we would expect. 2) The max oxygen intake is 8.004 L/min less than what we would expect. 3) The max oxygen intake is 8.004 L/min larger than what we would expect. 4) The heart rate is 8.004 bpm less than what we would expect. 5) The heart rate is 8.004 bpm larger than what we would expect.
Samriddhi S.
Compare the change in the respiratory rate after the exercise (oxygen debt) between sexes. Give the physiological basis of the difference.
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