Associations between prolonged sedentary time and breaks in sedentary time with cardiometabolic risk in 10–14-year-old children: The HAPPY study |
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| Authors: | Daniel P Bailey Sarah J Charman Thomas Ploetz Louise A Savory Catherine J Kerr |
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| Institution: | 1. Institute for Sport and Physical Activity Research, School of Sport Science and Physical Activity, University of Bedfordshire, Bedford, UK;2. Institute of Cellular Medicine, Newcastle University, Newcastle upon Tyne, UK;3. Open Lab, School of Computing Science, Newcastle University, Newcastle upon Tyne, UK;4. Allied &5. Public Health, Faculty of Medical Science, Anglia Ruskin University, Cambridge, UK |
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| Abstract: | This study examines the association between prolonged sedentary time and breaks in sedentary time with cardiometabolic risk in 10–14-year-old children. This cross-sectional design study analysed accelerometry-determined sedentary behaviour and physical activity collected over 7 days from 111 (66 girls) UK schoolchildren. Objective outcome measures included waist circumference, fasting lipids, fasting glucose, blood pressure, and cardiorespiratory fitness. Logistic regression was used for the main data analysis. After adjustment for confounders, the odds of having hypertriglyceridaemia (P = 0.03) and an increased clustered cardiometabolic risk score (P = 0.05) were significantly higher in children who engaged in more prolonged sedentary bouts per day. The number of breaks in sedentary time per day was not associated with any cardiometabolic risk factor, but longer mean duration of daily breaks in sedentary time were associated with a lower odds of having abdominal adiposity (P = 0.04) and elevated diastolic blood pressure (P = 0.01). These associations may be mediated by engagement in light activity. This study provides evidence that avoiding periods of prolonged uninterrupted sedentary time may be important for reducing cardiometabolic disease risk in children. |
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| Keywords: | Sedentary bout sedentary time physical activity cardiometabolic risk cardiorespiratory fitness |
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