| Autor: |
Bourgois J; Centre of Sports Medicine, Ghent University Hospital, Belgium. jan.bourgois@UGent.be, Coorevits P, Danneels L, Witvrouw E, Cambier D, Vrijens J |
| Jazyk: |
angličtina |
| Zdroj: |
Journal of strength and conditioning research [J Strength Cond Res] 2004 Aug; Vol. 18 (3), pp. 498-503. |
| DOI: |
10.1519/1533-4287(2004)18<498:VOTHRD>2.0.CO;2 |
| Abstrakt: |
This paper examines the validity of the heart rate deflection point (HRDP) obtained with the "updated" Conconi test. Eleven male road cyclists performed 2 progressive incremental cycling tests and a 30-minute prolonged exercise test (PET). From the data obtained, comparisons were made and correlation coefficients were calculated between HRDP, the lactate threshold (LT), and the 3 mmol.L(-1) threshold (AT3). The PET at HRDP demonstrated whether or not a steady state in blood lactate concentration (BLaSS) could be maintained. Significantly lower values for power output (p < 0.01) and heart rate (HR) (p < 0.01) were found at LT compared with HRDP. No differences were found between HRDP and AT3. Only a moderate correlation for power output between HRDP and AT3 (rs = 0.69; p < 0.05) could be observed. During the PET, only 6 out of 11 cyclists reached the target time of 30 minutes, and only 4 cyclists maintained a BLaSS. We conclude that the updated Conconi test is not a valid method for assessing LT or AT3. Therefore, this method seems not suitable to evaluate endurance performance and prescribe exercise intensities in road cycling. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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