Influence of habitual physical activity on gastric emptying in healthy males and relationships with body composition and energy expenditure

Horner, Katy M., Byrne, Nuala M., Cleghorn, Geoffrey J. and King, Neil A. (2015) Influence of habitual physical activity on gastric emptying in healthy males and relationships with body composition and energy expenditure. British Journal of Nutrition, 114 3: 489-496. doi:10.1017/S0007114515002044


Author Horner, Katy M.
Byrne, Nuala M.
Cleghorn, Geoffrey J.
King, Neil A.
Title Influence of habitual physical activity on gastric emptying in healthy males and relationships with body composition and energy expenditure
Journal name British Journal of Nutrition   Check publisher's open access policy
ISSN 1475-2662
0007-1145
Publication date 2015-08-14
Year available 2015
Sub-type Article (original research)
DOI 10.1017/S0007114515002044
Open Access Status Not Open Access
Volume 114
Issue 3
Start page 489
End page 496
Total pages 8
Place of publication Cambridge, United Kingdom
Publisher Cambridge University Press
Collection year 2016
Language eng
Formatted abstract
Although a number of studies have examined the role of gastric emptying (GE) in obesity, the influences of habitual physical activity level, body composition and energy expenditure (EE) on GE have received very little consideration. In the present study, we compared GE in active and inactive males, and characterised relationships with body composition (fat mass and fat-free mass) and EE. A total of forty-four males (active n 22, inactive n 22; BMI 21–36 kg/m2; percentage of fat mass 9–42 %) were studied, with GE of a standardised (1676 kJ) pancake meal being assessed by the [13C]octanoic acid breath test, body composition by air displacement plethysmography, RMR by indirect calorimetry, and activity EE (AEE) by accelerometry. The results showed that GE was faster in active compared with inactive males (mean half-time (t1/2): active 157 (sd 18) and inactive 179 (sd 21) min, P< 0·001). When data from both groups were pooled, GE t1/2 was associated with percentage of fat mass (r 0·39, P< 0·01) and AEE (r − 0·46, P< 0·01). After controlling for habitual physical activity status, the association between AEE and GE remained, but not that for percentage of fat mass and GE. BMI and RMR were not associated with GE. In summary, faster GE is considered to be a marker of a habitually active lifestyle in males, and is associated with a higher AEE level and a lower percentage of fat mass. The possibility that GE contributes to a gross physiological regulation (or dysregulation) of food intake with physical activity level deserves further investigation.
Keyword Body composition
Energy expenditure
Gastric emptying
Physical activity
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2016 Collection
School of Medicine Publications
 
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