PDF(Pubmed)
Abstract：
This study explored the impact of varying energy availability (EA) on the 24-h interstitial fluid glucose concentration (IGC) in five elite male Japanese triathletes at a training camp. Measurements of IGC, energy and macronutrient intake, and exercise energy expenditure (EEE) through metabolic equivalents (METs) from training logs were conducted. Three subjects were evaluated over two 4-day periods, and two subjects over one 4-day period. Findings revealed significant correlations of daily mean nocturnal IGC with daily EA (r = 0.553, p = 0.001) and energy intake (EI) (r = 0.595, p < 0.001). However, no significant correlation was found between mean daily nocturnal IGC and EEE (r = -0.278, p = 0.124). Daytime IGC was ≥110 mg/dL for >50% of the time in all subjects, except on 1 day in one subject, and never fell <70 mg/dL. Therefore, daily EA may influence nocturnal IGC in elite male triathletes, although high daytime IGC levels were maintained without hypoglycemia.
摘要：
这项研究探讨了在训练营中，五名日本精英男子铁人三项运动员的不同能量可用性（EA）对24小时间质液葡萄糖浓度（IGC）的影响。测量IGC,能量和大量营养素的摄入，并通过训练日志中的代谢当量（MET）进行运动能量消耗（EEE）。在两个4天的时间内对三名受试者进行了评估，和两个受试者在一个4天的时间内。研究结果表明，每日平均夜间IGC与每日EA（r=0.553，p=0.001）和能量摄入（EI）（r=0.595，p<0.001）显着相关。然而,平均每日夜间IGC和EEE之间没有发现显着相关性（r=-0.278，p=0.124）。所有受试者的日间IGC≥110mg/dL，时间>50%，除了一个科目的1天，并且从未下降<70mg/dL。因此,每日EA可能会影响精英男子铁人三项运动员的夜间IGC，尽管维持了白天较高的IGC水平，但没有低血糖。
