cad a22 4500 317086189 20181103043305.0 cr unu---uuuuu 140624s2015 xx s 000 0 eng 10.5167/uzh-96688 doi 10.1123/ijspp.2013-0498 doi (ZORA)oai:www.zora.uzh.ch:96688 610 ddc 24912074 pmid Drafting improves 3000m running performance in elite athletes: Is it a placebo effect? [Elektronische Daten] [Hassane Zouhal, Abderraouf Ben Abderrahman, Jacques Prioux, Beat Knechtle, Lotfi Bouguerra, Wiem Kebsi, Timothy D Noakes] openAccess eu-repo PURPOSE: The study was designed to determine the effect of drafting on running time, physiological response and rate of perceived exertion (RPE) during 3000m-track running. METHODS: Ten elite middle and long distance runners performed three track-running sessions. The first session determined maximal oxygen uptake (VO2max) and maximal aerobic speed (MAS) using a lightweight ambulatory respiratory gas exchange system (K4B2). The second and the third tests consisted of non-drafting 3000m running (3000mND) and 3000m running with drafting for the first 2000m (3000mD) performed on the track in a randomized counter-balanced order. RESULTS: Performance during the 3000m (553.59±22.15 s) was significantly slower (p<0.05) than during the 3000mD (544.74±18.72 s). Cardiorespiratory responses were not significantly different between the trials. However, blood lactate concentration was significantly higher (p<0.05) after the 3000mND (16.4±2.3mmol.L-1) than after the 3000mD (13.2±5.6mmol.L-1). Athletes perceived the 3000mND as more strenuous than the 3000mD (p<0.05) (RPE = 16.1±0.8 vs. 13.1±1.3). Results demonstrate that drafting has a significant effect on performance in highly trained runners. CONCLUSION: This effect could not be explained by a reduced energy expenditure or cardio-respiratory effort as a result of drafting. This raises the possibility that drafting may aid running performance by both physiological and non-physiological (i.e. psychological) effects. Institute of General Practice zora Zouhal Hassane joint author Ben Abderrahman Abderraouf joint author Prioux Jacques joint author Knechtle Beat joint author Bouguerra Lotfi joint author Kebsi Wiem joint author Noakes Timothy D. joint author International Journal of Sports Physiology and Performance 10(2):147-152 https://www.zora.uzh.ch/id/eprint/96688/1/Zouhal_Drafting_improves_3000_m_running_performance_in_elite_athletes-_is_it_a_placebo_effect.pdf text/html WWW-Backlink auf das Repository 1 Journal Article PeerReviewed zora ZORA 856 40 https://www.zora.uzh.ch/id/eprint/96688/1/Zouhal_Drafting_improves_3000_m_running_performance_in_elite_athletes-_is_it_a_placebo_effect.pdf text/html WWW-Backlink auf das Repository ZORA 700 1- Zouhal Hassane joint author ZORA 700 1- Ben Abderrahman Abderraouf joint author ZORA 700 1- Prioux Jacques joint author ZORA 700 1- Knechtle Beat joint author ZORA 700 1- Bouguerra Lotfi joint author ZORA 700 1- Kebsi Wiem joint author ZORA 700 1- Noakes Timothy D. joint author ZORA 773 0- International Journal of Sports Physiology and Performance 10(2):147-152 BK010053 XK010053 XK010000 ZORA ZORA ZORA Journal Article openAccess