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Effects of breaking up sitting on adolescents' postprandial glucose after consuming meals varying in energy: a cross-over randomised trial

Fletcher, Elly A., Salmon, Jo, McNaughton, Sarah A., Orellana, Liliana, Wadley, Glenn D., Bruce, Clinton, Dempsey, Paddy C., Lacy, Kathleen E. and Dunstan, David W. 2018, Effects of breaking up sitting on adolescents' postprandial glucose after consuming meals varying in energy: a cross-over randomised trial, Journal of science and medicine in sport, vol. 21, no. 3, pp. 280-285, doi: 10.1016/j.jsams.2017.06.002.

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Title Effects of breaking up sitting on adolescents' postprandial glucose after consuming meals varying in energy: a cross-over randomised trial
Author(s) Fletcher, Elly A.ORCID iD for Fletcher, Elly A. orcid.org/0000-0003-3958-9599
Salmon, JoORCID iD for Salmon, Jo orcid.org/0000-0002-4734-6354
McNaughton, Sarah A.ORCID iD for McNaughton, Sarah A. orcid.org/0000-0001-5936-9820
Orellana, LilianaORCID iD for Orellana, Liliana orcid.org/0000-0003-3736-4337
Wadley, Glenn D.ORCID iD for Wadley, Glenn D. orcid.org/0000-0002-6617-4359
Bruce, ClintonORCID iD for Bruce, Clinton orcid.org/0000-0002-0515-3343
Dempsey, Paddy C.
Lacy, Kathleen E.ORCID iD for Lacy, Kathleen E. orcid.org/0000-0002-2982-4455
Dunstan, David W.
Journal name Journal of science and medicine in sport
Volume number 21
Issue number 3
Start page 280
End page 285
Total pages 6
Publisher Elsevier
Place of publication Amsterdam, The Netherlands
Publication date 2018-03
ISSN 1440-2440
1878-1861
Keyword(s) Adolescents
Blood glucose
Continuous glucose monitor
Diet
Sedentary lifestyle
Science & Technology
Life Sciences & Biomedicine
Sport Sciences
GLYCEMIC CONTROL
CHILDREN
HEALTHY
WALKING
INDEX
YOUTH
Summary Objectives
To explore the impact of uninterrupted sitting versus sitting with resistance-type activity breaks on adolescents’ postprandial glucose responses while consuming a diet varying in energy.

Design
Cross-over randomised trial.

Methods
Thirteen healthy participants (16.4 ± 1.3 years) completed a four-treatment cross-over trial: (1) uninterrupted sitting + high-energy diet; (2) sitting with breaks + high-energy diet; (3) uninterrupted sitting + standard-energy diet; and (4) sitting with breaks + standard-energy diet. For all four conditions, two identical meals were consumed; at 0 h and 3 h. A continuous glucose monitoring system (CGM) recorded interstitial glucose concentrations every five minutes. Linear mixed models examined differences in glucose positive incremental area under the curve (iAUC) and total AUC between the sitting and diet conditions for the first meal, second meal and entire trial period.

Results
Compared to the uninterrupted sitting conditions, the breaks condition elicited a 36.0 mmol/L/h (95%CI 6.6–65.5) and 35.9 mmol/L/h (95%CI 6.6–65.5) lower iAUC response after the first and second meal, respectively, but not for the entire trial period or for total AUC. Compared to the standard-energy diet, the high-energy diet elicited a 55.0 mmol/L/h (95%CI 25.8–84.2) and 75.7 mmol/L/h (95%CI 8.6–142.7) higher iAUC response after the first meal and entire trial, respectively. Similar response to the high-energy diet were observed for total AUC.

Conclusions
According to iAUC, interrupting sitting had a significant effect on lowering postprandial glucose for both dietary conditions, however, it was not significant when examining total AUC. Larger studies are needed to confirm these findings.
Language eng
DOI 10.1016/j.jsams.2017.06.002
Field of Research 110699 Human Movement and Sports Science not elsewhere classified
1106 Human Movement And Sports Science
1117 Public Health And Health Services
Socio Economic Objective 920401 Behaviour and Health
HERDC Research category C1 Refereed article in a scholarly journal
ERA Research output type C Journal article
Grant ID NHMRC CRE 1057608
Copyright notice ©2017, Sports Medicine Australia
Free to Read? Yes
Use Rights Creative Commons Attribution Non-Commercial No-Derivatives licence
Persistent URL http://hdl.handle.net/10536/DRO/DU:30097298

Document type: Journal Article
Collections: School of Exercise and Nutrition Sciences
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Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.