The Effect of Mode and Intensity on Vo2 Kinetics in the Severe Intensity Domain Page: 38
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In the present study, kinetics were faster in treadmill running than in
cycling. This was clearly indicated by the results of the two-way ANOVA. In
addition, TVO2max calculated using the regression equations for cycling (TVO2max =
101 + (0.17 - TFATIGUE) and treadmill running (Tv02max = 144 + (0.26 - TFATIGUE), for all
TFATIGUE > 183 s, were higher in running than cycling. It is noted, however, that the
difference between the y-intercepts of the TVO2max--TFATIGUE relationships for
treadmill running (144 s) and cycling (101 s) did not reach statistical
significance.
If muscle mass engaged in running is greater than that engaged in
cycling, there may be a greater demand for 02 in running. The greater muscle
mass may permit relatively greater 02 extraction.
It has been reported that kinetics are faster in walking than in cycling
(Chilibeck et al., 1996) and faster in leg cycling than in arm cranking (Koga et
al., 1996). The purpose of the present study was to compare kinetics in running
and cycling. Chilibeck et al. (1996) suggested that kinetics are slowed in
exercise modes to which an individual is not accustomed, and that the slowed
kinetics are associated with muscle recruitment patterns. Koga et al. (1996) also
suggested that a contributing factor to slowed kinetics in arm exercise is the
untrained state of arm muscle relative to leg muscle in the average person.
In the present study, kinetics were "slowed" in cycling compared to
treadmill running. Informal interviews with the participants of this study
suggested they were at least as accustomed to cycling as to running. The38
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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/m1/44/: accessed April 23, 2024), University of North Texas Libraries, UNT Digital Library, https://digital.library.unt.edu; .