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Title: Effect of hydration status and fluid availability on ad-libitum energy intake of a semi-solid breakfast
Authors: Corney, Robert
Horina, Anja
Sunderland, Caroline
James, Lewis J.
Keywords: Appetite
Fluid restriction
Issue Date: 2015
Publisher: © Elsevier
Citation: CORNEY, R. ...et al., 2015. Effect of hydration status and fluid availability on ad-libitum energy intake of a semi-solid breakfast. Appetite, 91, pp.399-404.
Abstract: This study investigated the effects of hydration status and fluid availability on appetite and energy intake. Sixteen males completed four 24 h trials, visiting the laboratory overnight fasted on two consecutive days. Standardised foods were provided during the 24 h and on day two an ad-libitum semi-solid porridge breakfast was provided. Water intake during the 24 h (0 or 40 mL·kg<sup>-1</sup>) and fluid provision during the ad-libitum breakfast were manipulated so subjects were euhydrated with (EU-F) and without fluid (EU-NF) available at breakfast; and hypohydrated with (HYPO-F) and without fluid (HYPO-NF) available at breakfast. Blood samples (0 and 24 h), urine samples (0-24 h) and subjective responses (0, 24 and 24.5 h) were collected. HYPO trials decreased body mass by ~1.8%. Serum and urine osmolality increased and plasma volume decreased during HYPO trials (P < 0.001). Total urine output was greater during EU than HYPO trials (P < 0.001). Ad-libitum energy intake was not different between trials: 2658 (938) kJ (EU-F), 2353 (643) kJ (EU-NF), 2295 (529) kJ (HYPO-F), 2414 (954) kJ (HYPO-NF), (P = 0.131). Fluid intake was ~200 mL greater during HYPO-F than EU-F (P < 0.01). There was an interaction effect for thirst (P < 0.001), but not hunger or fullness. These results demonstrate that mild hypohydration produced by inadequate fluid intake and fluid availability during eating does not influence ad-libitum energy intake of a semi-solid breakfast, at least in healthy young males.
Sponsor: This study was supported by research funding from the European Hydration Institute.
Version: Accepted for publication
DOI: 10.1016/j.appet.2015.04.075
URI: https://dspace.lboro.ac.uk/2134/18823
Publisher Link: http://dx.doi.org/10.1016/j.appet.2015.04.075
ISSN: 0195-6663
Appears in Collections:Published Articles (Sport, Exercise and Health Sciences)

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