The effect of double--blind carbohydrate ingestion during 60 km of self-paced exercise in warm ambient conditions.

This study evaluated double blind ingestions of placebo (PLA) versus 6% carbohydrate (CHO) either as capsules (c) or beverage (b) during 60 km self-paced cycling in the heat (32°C and 50% relative humidity). Ten well-trained males (mean ± SD: 26±3 years; 64.5±7.

Double blind carbohydrate ingestion does not improve exercise duration in warm humid conditions.

The positive effects of carbohydrate (CHO) supplementation on endurance exercise are well documented but the placebo (PLA(c)) effect can make the ergogenic qualities of substances more difficult to determine. Therefore, this study tested the effect of double blind ingestion of PLA(c) and CHO(c) in capsules versus known capsule (CHO(k)) ingestion on prolonged exercise heat stress. Nine well trained male volunteers (mean+/-S.