The Modified Dmax Method is Reliable to Predict the Second Ventilatory Threshold in Elite Cross-Country Skiers
| Autor: | Filippo Balestreri, Nicolas Fabre, Federico Schena, Barbara Pellegrini |
|---|---|
| Rok vydání: | 2010 |
| Předmět: |
Adult
Male Adolescent roller-ski Physical Therapy Sports Therapy and Rehabilitation Young Adult Heart Rate Skiing Heart rate Humans Orthopedics and Sports Medicine Lactic Acid Treadmill Mathematics lactate Lactate concentration Cross country Pulmonary Gas Exchange business.industry Lactate threshold Limits of agreement General Medicine respiratory compensation threshold Athletes anaerobic threshold Exercise Test Female Nuclear medicine business Ventilatory threshold Anaerobic exercise |
| Zdroj: | Journal of Strength and Conditioning Research. 24:1546-1552 |
| ISSN: | 1064-8011 |
| DOI: | 10.1519/jsc.0b013e3181dc450a |
| Popis: | This study was designed to evaluate, in elite cross-country skiers, the capacity of the DMAX lactate threshold method and its modified version (DMAX MOD) to accurately predict the second ventilatory threshold (VT2). Twenty-three elite cross-country skiers carried out an incremental roller-ski test on a motorized treadmill. Ventilation, heart rate (HR), and gas exchanges were continuously recorded during the test. Blood was sampled at the end of each 3-minute work stage for lactate concentration measurements. The VT2 was individually determined by visual analysis. The DMAX, DMAX MOD points also with the 4 mmol.L(-1) fixed lactate concentration value (4 mM) were determined by a computerized program. Paired t tests showed nonsignificant differences between HR at VT2 and HR at DMAX MOD, between HR at VT2 and HR at 4 mM, and between HR at DMAX MOD and HR at 4 mM. HR at DMAX was significantly lower than HR at VT2, DMAX MOD, and at 4 mM (p |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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