Effects of cycling alone or in a sheltered position on subsequent running performance during a triathlon
Deutscher übersetzter Titel: | Auswirkungen des Radfahrens einzeln oder im Windschatten auf die darauffolgende Laufleistung bei einem Triathlon |
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Autor: | Hausswirth, C.; Lehenaff, D.; Dreano, P.; Savonen, K. |
Erschienen in: | Medicine and science in sports and exercise |
Veröffentlicht: | 31 (1999), 4, S. 599-604, Lit. |
Format: | Literatur (SPOLIT) |
Publikationstyp: | Zeitschriftenartikel |
Medienart: | Gedruckte Ressource |
Sprache: | Englisch |
ISSN: | 0195-9131, 1530-0315 |
Schlagworte: | |
Online Zugang: | |
Erfassungsnummer: | PU199905309481 |
Quelle: | BISp |
Abstract des Autors
Purpose: The purpose of this study was to compare the responses during a triathlon in which cycling was performed alone, as well as in a drafting position. Methods: Eight male triathletes of international level performed a sprint-distance triathlon (0.75-km swim, 20-km bike, 5-km run) on two different occasions, one completely alone (TA), the other as a drafter during the bike leg of the event (TD). The speed during drafted cycling remained at all times identical to the no-draft situation. Results: The results revealed that expiratory flow (VE), oxygen uptake (VO2), heart rate (HR), and blood lactate concentrations ([La-]) were significantly lower when drafting on the bike as opposed to biking alone (112.1 vs 162.2 L/min, 55.2 vs 64.2 mL/min/kg, 155 vs 166.8 beats/min, and 4.0 vs 8.4 mmol/L, respectively). The results also showed that running after biking in a drafting situation (for similar bike speeds) significantly improved the running speed compared with that of the no-draft modality (17.8 vs 17.1 km/h). Furthermore, VE, VO2, HR, and [La-] were significantly higher during TD run compared with TA run (161.6 vs 141.4 L/min, 70.9 vs 67.1 mL/min/kg, 175.3 vs 167.9 beats/min, and 8.1 vs 7.6 mmol/L, respectively). Conclusions: These results showed that drafting allows triathletes to save significantly on energy during the bike leg of a triathlon and creates the conditions for an improved running performance, with higher benefits for the strong runners. Verf.-Referat