Drinking behaviors of elite male runners during marathon competition

摘要: OBJECTIVE To describe the drinking behaviors of elite male marathon runners during major city marathons. DESIGN Retrospective analysis behaviors. SETTING Institutional. PARTICIPANTS Ten (9 winners and 1 second position) 13 MAIN OUTCOME MEASURES Total durations fluid intake rates RESULTS The ambient conditions studied races were 15.3°C ± 8.6°C 59% 17% relative humidity; average competition time was 02:06:31 00:01:08 (hours:minutes:seconds). duration these 25.5 15.0 seconds (range, 1.6-50.7 seconds) equating to an extrapolated rate 0.55 0.34 L/h 0.03-1.09 L/h). No significant correlations found between total drink duration, (rate total), running speed, temperature. Estimated body mass (BM) loss based on calculated sweat ingestion 8.8% 2.1% 6.6%-11.7%). Measurements winner in 2009 Dubai revealed a BM 9.8%. CONCLUSIONS most successful runners, marathons, fluids ad libitum for less than approximately 60 at comparable current American College Sports Medicine's recommendations 0.4-0.8 L/h. Nevertheless, do not seem maintain their within recommended ranges 2%-3%.