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- Title
Critical Velocity and Time Spent at a High Level of VO[sub2] for Short Intermittent Runs at Supramaximal Velocities.
- Authors
Dupont, Grégory; Blondel, Nicolas; Lensel, Ghislaine; Berthoin, Serge
- Abstract
This study was designed to determine the intermittent critical velocity, the time spent at maximal oxygen uptake (VO[sub 2]max) and the time spent above 90% of VO[sub 2]max for short intermittent runs of 15 s at supramaximal velocities, alternating with 15 s of passive recovery. Nine male subjects performed 5 field-tests to exhaustion (tlim): 4 intermittent runs at 110%, 120%, 130% and 140% of maximal aerobic speed (MAS) and 1 continuous run at 100% of MAS. Results have shown the mean intermittent critical velocity (4.82 ± 0.41 m.s[sup −1]) was not significantly different from MAS (4.63 ± 0.37 m.s[sup −1]). Intermittent runs at 110% and 120% of MAS and the continuous run at 100% of MAS lead all subjects to reach VO[sub 2]max. However, intermittent runs at 120% of MAS (202 ± 66 s) allowed subjects to spend a significantly longer time at VO[sub 2]max (p < .05) than intermittent runs at 110% (116 ± 42 s), 130% (50 ± 47 s), 140% (48 ± 59 s) of MAS and continuous run at 100% of MAS (120 ± 42 s). The time spent between 90 and 100% of VO[sub 2]max was significantly longer (p < .05) for intermittent runs at 110% (383 ± 180 s) and for 120% (323 ± 272 s) of MAS than for intermittent runs at 130% (135 ± 133 s), 140% of MAS (77 ± 96 s) and for continuous run at 100% of MAS (217 ± 114 s). Consequently, this kind of intermittent exercise with intensities from intermittent critical velocity to 120% of MAS could be introduced in a training program when the purpose is to increase VO[sub 2]max.
- Subjects
SPEED; PHYSIOLOGICAL transport of oxygen
- Publication
Canadian Journal of Applied Physiology, 2002, Vol 27, Issue 2, p103
- ISSN
1066-7814
- Publication type
Article
- DOI
10.1139/h02-008