Adverse associations of car time with markers of cardio-metabolic risk
Sugiyama, Takemi, Wijndaele, Katrien, Koohsari, Mohammad Javad, Tanamas, Stephanie K., Dunstan, David W. and Owen, Neville. (2016) Adverse associations of car time with markers of cardio-metabolic risk. Preventive Medicine. 83, pp. 26-30. https://doi.org/10.1016/j.ypmed.2015.11.029
|Authors||Sugiyama, Takemi, Wijndaele, Katrien, Koohsari, Mohammad Javad, Tanamas, Stephanie K., Dunstan, David W. and Owen, Neville|
Objective: To examine associations of time spent sitting in cars with markers of cardio-metabolic risk in Australian adults.
Method: Data were from 2800 participants (age range: 34–65) in the 2011–12 Australian Diabetes, Obesity and Lifestyle Study. Self-reported time spent in cars was categorized into four groups: ≤ 15 min/day; > 15 to ≤ 30 min/day; > 30 to ≤ 60 min/day; and > 60 min/day. Markers of cardio-metabolic risk were body mass index (BMI), waist circumference, systolic and diastolic blood pressure, triglycerides, HDL (high-density lipoprotein)-cholesterol, fasting plasma glucose, 2-h plasma glucose, a clustered cardio-metabolic risk score, and having the metabolic syndrome or not. Multilevel linear and logistic regression analyses examined associations of car time with each cardio-metabolic risk outcome, adjusting for socio-demographic and behavioral variables and medication use for blood pressure and cholesterol/triglycerides.
Results: Compared to spending 15 min/day or less in cars, spending more than 1 h/day in cars was significantly associated with higher BMI, waist circumference, fasting plasma glucose, and clustered cardio-metabolic risk, after adjusting for socio-demographic attributes and potentially relevant behaviors including leisure-time physical activity and dietary intake. Gender interactions showed car time to be associated with higher BMI in men only.
Conclusions: Prolonged time spent sitting in cars, in particular over 1 h/day, was associated with higher total and central adiposity and a more-adverse cardio-metabolic risk profile. Further studies, ideally using objective measures of sitting time in cars and prospective designs, are needed to confirm the impact of car use on cardio-metabolic disease risk.
|Keywords||sedentary behavior; motorized transport; automobile; adiposity|
|Journal citation||83, pp. 26-30|
|Digital Object Identifier (DOI)||https://doi.org/10.1016/j.ypmed.2015.11.029|
|Open access||Published as green open access|
|Research or scholarly||Research|
|Funder||National Health and Medical Research Council|
|Research Group||Institute for Health and Ageing|
|Author's accepted manuscript|
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