Abstract
Purpose: To investigate how the pattern of sedentary behaviour affects intra-day glucose regulation in type 2 diabetes. Methods: This intensive longitudinal study was conducted in 37 participants with type 2 diabetes (age, 62.8 ± 10.5 years). Glucose and sedentary behaviour/physical activity were assessed with a continuous glucose monitoring (Abbott FreeStyle Libre) and an activity monitor (activPAL3) for 14 days. Multiple regression models with generalised estimating equations (GEEs) approach were used to assess the associations of sedentary time and breaks in sedentary time with pre-breakfast glucose, pre-lunch glucose, pre-dinner glucose, post-breakfast glucose, post-lunch glucose, post-dinner glucose, bedtime glucose, the dawn phenomenon, time in target glucose range (TIR, glucose 3.9–10 mmol/L) and time above target glucose range (TAR, glucose > 10 mmol/L). Results: Sedentary time was associated with higher pre-breakfast glucose (p = 0.001), pre-dinner glucose (p < 0.001), post-lunch glucose (p = 0.005), post-dinner glucose (p = 0.013) and the dawn phenomenon (p < 0.001). Breaks in sedentary time were associated with lower pre-breakfast glucose (p = 0.023), pre-dinner glucose (p = 0.023), post-breakfast glucose (p < 0.001) and the dawn phenomenon (p = 0.004). The association between sedentary time and less TIR (p = 0.022) and the association between breaks in sedentary time and more TIR (p = 0.001) were also observed. Conclusions: Reducing sedentary time and promoting breaks in sedentary time could be clinically relevant to improve intra-day glucose regulation in type 2 diabetes.
Original language | English |
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Pages (from-to) | 171-179 |
Number of pages | 9 |
Journal | European Journal of Applied Physiology |
Volume | 120 |
Early online date | 8 Nov 2019 |
DOIs | |
Publication status | Published - 31 Jan 2020 |
Funding
This work was supported by School of Psychological Sciences and Health, University of Strathclyde, UK; PAL technologies Ltd (Glasgow, UK) and School of Health and Life-Sciences, Glasgow Caledonian University, UK. The funding agencies did not play any role in preparing and writing up manuscript and making a decision to submit manuscript. The authors would like to thank KAM who put significant efforts on recruitment of participants. The authors also thank participants who volunteered and devoted their time to the study.
Keywords
- breaks in sedentary time
- glucose targets
- glycaemic control
- physical activity
- sedentary behaviour
- type 2 diabetes