Carbohydrate Supplementation Improves Time-Trial Cycle Performance at 4300 m Altitude

摘要

Carbohydrate supplementation (CHOS) during prolonged (> 1 hr) heavy cycle exercise at sea level (SL) enhances glucose availability and oxidation, allowing performance at higher work rates compared to control. However, at altitude (ALT), hypoxemia exacerbated by exercise may limit work rate increases and time-trial cycle performance improvements with CHOS. The purpose of this study was to determine if CHOS improves performance at ALT.