The Effect of Mode and Intensity on Vo2 Kinetics in the Severe Intensity Domain Page: 16
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represents the intensity beyond which VO2max can be achieved. This P'CRITICAL
denotes the upper boundary of the heavy intensity domain and is immediately
adjacent to the lower boundary of the severe intensity domain. P'CRITICAL was
found to be to equal to PCRITICAL.
Consistent with previous descriptions of VO2 kinetics in the severe
intensity domain, Hill et al. (unpublished) found that VO2 did reach its maximum
at intensities from 95% to 135% of Pmax. This seems to indicate that VO2max can
be reached and sustained for a period of time during constant-power exercise at
intensities close to those that elicit VO2max in an incremental test.
Hill et al. (unpublished) proposed that the definition of the severe
intensity domain be simplified to "exercise intensities at which VO2max can be
elicited". They feel this definition makes no attempt to describe how VO2 climbs
to VO2max, provides no stipulation that fatigue and VO2max occur together, and
provides an upper limit to the domain.
Effect of Mode on VO2max
The purpose of the study by Martinez et al. (1993) was to determine the
differences in cardiorespiratory and metabolic responses to treadmill running,
ergometer cycling and roller skating in nine (six male, three female) top level
roller skaters. Preliminary tests were conducted in order to establish a testing
protocol that would elicit similar heart rate kinetics across all three modes. A
discontinuous graded test performed to exhaustion, with 3-min work stages and
2-min rest stages, was used for each exercise mode.16
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Updyke, Rhonda S. The Effect of Mode and Intensity on Vo2 Kinetics in the Severe Intensity Domain, thesis, May 2000; Denton, Texas. (https://digital.library.unt.edu/ark:/67531/metadc2493/m1/22/: accessed April 24, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .