A physiological description of critical velocity
| Autor: | David W. Hill, C. S. Ferguson |
|---|---|
| Rok vydání: | 1999 |
| Předmět: |
Adult
Male Physiological significance Anaerobic Threshold Physiology Public Health Environmental and Occupational Health VO2 max Treadmill exercise General Medicine Critical ionization velocity Incremental test Intensity (physics) Animal science Oxygen Consumption Physiology (medical) Muscle Fatigue Exercise Test Humans Orthopedics and Sports Medicine Anaerobiosis Algorithms Time to exhaustion Exercise tolerance test Mathematics |
| Zdroj: | European journal of applied physiology and occupational physiology. 79(3) |
| ISSN: | 0301-5548 |
| Popis: | Although critical velocity (CV) provides a valid index of aerobic function, the physiological significance of CV is not known. Twelve individuals performed exhaustive runs at 95% to 110% of the velocity at which V˙O2max was attained in an incremental test. V˙O2max was elicited in each run. Using the time to exhaustion at each velocity, CV was calculated for each participant. Using the time to achieve V˙O2max at each velocity, which was shorter at higher velocities, a parameter we have designated as CV′ was calculated for each participant. During exercise at or below CV′, V˙O2max cannot be elicited. CV (238 ± 24 m · min−1) and CV′ (239 ± 25 m · min−1) were equal (t = 0.60, p = 0.56) and correlated (r = 0.97, p < 0.01). These results demonstrate that CV is the threshold intensity above which exercise of sufficient duration will lead to attainment of V˙O2max. |
| Databáze: | OpenAIRE |
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