Effects of temperature and volume on measures of mouth dryness, thirst and stomach fullness in males and females.
The immediate post-ingestive effects of temperature on thirst reduction were explored. Thirst was assessed by both ratings and a volume selection task. Supplementary ratings assessed mouth dryness and stomach fullness. All measures were taken before and 0, 2.5 and 5 min after drinking one of four water samples (150 ml/5 degrees C, 400 ml/5 degrees C, 150 ml/22 degrees C or 400 ml/22 degrees C). After 2.5 min, the cold sample produced greater reductions than the warmer sample in (i) the thirst ratings of males who received 400-ml samples, and (ii) the volume selections of females who received 150-ml samples. It is proposed that temperature influenced thirst reduction because of its differential effects on the post-ingestive state of the mouth.
Brunstrom
J M
JM
School of Psychology, University of Birmingham, Edgbaston, Birmingham B15 2TT, UK.
Macrae
A W
AW
D000328:Adult; D003681:Dehydration / Q000523:psychology; D004326:Drinking / Q000502:physiology; D004327:Drinking Behavior / Q000502:physiology*; D005260:Female; D006801:Humans; D008297:Male; D012527:Satiation / Q000502:physiology; D013696:Temperature; D013894:Thirst / Q000502:physiology*