Fallowfield J L, Williams C
Centre for Sports Sciences, Chichester Institute of Higher Education, UK.
Int J Sport Nutr. 1997 Mar;7(1):10-25. doi: 10.1123/ijsn.7.1.10.
The present study examined the influence of ingesting 3.0 g CHO . kg-1 body mass . 2 hr-1 after prolonged exercise on recovery and running capacity 4 hr later. Nine men and 8 women completed two trials in a counterbalanced design. Each trial consisted of a 90-min run on a level treadmill at 70% VO2 max (R1) followed by 4 hr recovery (REC) and a further exhaustive run at 70% VO2 max (R2). During REC, subjects ingested either two feedings of a 6.9% glucosepolymer (GP) solution (D trial) or two feedings of a 19.3% GP solution (C trial). There were no differences in mean (+/- SE) R2 run times between the C and D trials or between the male and female subjects. More stable blood glucose concentrations were maintained during REC in the C trial, such that blood glucose was elevated in the C trial in comparison with the D trial after 210 min of REC. It was concluded that increasing postexercise carbohydrate intake from 1.0 to 3.0 g CHO . kg-1 body mass . 2 hr-1 does not improve endurance capacity 1 hr later.
本研究考察了在长时间运动后每2小时摄入3.0克碳水化合物·每千克体重，对4小时后的恢复情况和跑步能力的影响。9名男性和8名女性以平衡设计完成了两项试验。每项试验包括在水平跑步机上以最大摄氧量的70%进行90分钟跑步（R1），随后4小时恢复（REC），以及在最大摄氧量的70%下进行的又一次力竭性跑步（R2）。在恢复期间，受试者摄入两种6.9%葡萄糖聚合物（GP）溶液（D试验）或两种19.3% GP溶液（C试验）。C试验和D试验之间以及男性和女性受试者之间，R2跑步时间的平均值（±标准误）没有差异。在C试验的恢复期间，血糖浓度维持得更稳定，以至于在恢复210分钟后，C试验中的血糖比D试验中更高。得出的结论是，将运动后碳水化合物摄入量从每2小时1.0克碳水化合物·每千克体重增加到3.0克碳水化合物·每千克体重，并不会在1小时后提高耐力。
