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Gepubliceerd in: Journal of Behavioral Medicine 5/2020

01-11-2019

The effect of time spent outdoors during summer on daily blood glucose and steps in women with type 2 diabetes

Auteurs: Molly B. Richardson, Courtney Chmielewski, Connor Y. H. Wu, Mary B. Evans, Leslie A. McClure, Kathryn W. Hosig, Julia M. Gohlke

Gepubliceerd in: Journal of Behavioral Medicine | Uitgave 5/2020

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Abstract

This study investigated changes in glycemic control following a small increase in time spent outdoors. Women participants with type 2 diabetes (N = 46) wore an iBUTTON temperature monitor and a pedometer for 1 week and recorded their morning fasting blood glucose (FBG) daily. They went about their normal activities for 2 days (baseline) and were asked to add 30 min of time outdoors during Days 3–7 (intervention). Linear mixed effects models were used to test whether morning FBG values were different on days following intervention versus baseline days, and whether steps and/or heat exposure changed. Results were stratified by indicators of good versus poor glycemic control prior to initiation of the study. On average, blood glucose was reduced by 6.1 mg/dL (95% CI − 11.5, − 0.6) on mornings after intervention days after adjusting for age, BMI, and ambient weather conditions. Participants in the poor glycemic control group (n = 16) experienced a 15.8 mg/dL decrease (95% CI − 27.1, − 4.5) in morning FBG on days following the intervention compared to a 1.6 mg/dL decrease (95%CI − 7.7, 4.5) for participants in the good glycemic control group (n = 30). Including daily steps or heat exposure did not attenuate the association between intervention and morning FBG. The present study suggests spending an additional 30 min outdoors may improve glycemic control; however, further examination with a larger sample over a longer duration and determination of mediators of this relationship is warranted.
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Metagegevens
Titel
The effect of time spent outdoors during summer on daily blood glucose and steps in women with type 2 diabetes
Auteurs
Molly B. Richardson
Courtney Chmielewski
Connor Y. H. Wu
Mary B. Evans
Leslie A. McClure
Kathryn W. Hosig
Julia M. Gohlke
Publicatiedatum
01-11-2019
Uitgeverij
Springer US
Gepubliceerd in
Journal of Behavioral Medicine / Uitgave 5/2020
Print ISSN: 0160-7715
Elektronisch ISSN: 1573-3521
DOI
https://doi.org/10.1007/s10865-019-00113-5