| Autor: |
Santos, E. L., Novaes, J. S., Reis, V. M., Giannella-Neto, A. |
| Předmět: |
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| Zdroj: |
International Journal of Sports Medicine; Nov2010, Vol. 31 Issue 11, p784-789, 6p, 1 Chart, 6 Graphs |
| Abstrakt: |
The purpose of this work was to apply a simple method for acquisition of power output (PO) during the Wingate Anaerobic Test (WAnT) at a high sampling rate (SR) and to compare the effect of lower SR on the measurements extracted from the PO. 26 male subjects underwent 2 WAnTs on a cycle ergometer. The reference PO was calculated at 30 Hz as a function of the linear velocity, the moment of inertia and the frictional load. The PO was sampled at 0.2, 0.5, 1, 2 and 5 Hz. Both the peak (16.03 ± 2.22 W •kg-1) and mean PO (10.34 ± 1.01W • kg-1) presented lower relative values when the SR was lower. Peak PO was attenuated by 0.29-42.07% for decreasing sampling rates, resulting in different values for 0.2 and 1 Hz (P< 0.001 ). When the SR was 0.2 Hz, the time to peak was delayed by 53.81 % (P<0.001) and the fatigue index was attenuated by 22.12% (P< 0.001). In conclusion, due to the differences achieved here and the fact that the peak flywheel frequency is around 2.3 Hz, we strongly recommend that the PO be sampled at 5 Hz instead of 0.2 Hz in order to avoid biased errors and misunderstandings of the WAnT results. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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