Effect of Carbohydrate-Electrolyte Solution Including Bicarbonate Ion Ad Libitum Ingestion on Urine Bicarbonate Retention during Mountain Trekking: A Randomized, Controlled Pilot Study

摘要: We investigated whether bicarbonate ion (HCO3−) in a carbohydrate-electrolyte solution (CE+HCO3) ingested during climbing to 3000 m on Mount Fuji could increase urine HCO3− retention. This study was randomized, controlled pilot study. Sixteen healthy lowlander adults were divided into two groups (six males and females for each): tap water (TW) group (0 kcal with no energy) CE+HCO3 group. The allocation TW or double blind. CE contains 10 energy, including Na+ (115 mg), K+ (78 (51 mg) per 100 mL. After collecting baseline measuring body weight, participants started while energy expenditure (EE) heart rate (HR) recorded every min portable calorimeter. reaching hut at approximately m, we collected measured weight again. balance climbing, by subtracting the amount of excreted from fluid ingested, −0.37 ± 0.77 mmol CE+HCO3, which significantly higher than (−2.23 0.96 mmol, p < 0.001). These results indicate that containing supplementation may buffering system mountain trekking up ~3000 suggesting useful solution, least, population present Fuji.