Association of objectively measured sedentary behaviour and physical activity with cardiovascular disease risk

Abstract

Background We evaluated the association of accelerometer-based sedentary behaviour and physical activity with the risk of cardiovascular disease. Design The design of this study used a population-based, cross-sectional sample. Methods A subsample of participants in the Health 2011 Study in Finland used the tri-axial accelerometer (≥4 days, >10 h/day, n = 1398). Sedentary behaviour (sitting, lying) and standing still in six-second epochs were recognised from raw acceleration data based on intensity and device orientation. The intensity of physical activity was calculated as one-minute moving averages of mean amplitude deviation of resultant acceleration and converted to metabolic equivalents. Metabolic equivalents were categorised to light physical activity (1.5-2.9 metabolic equivalents) and moderate-to-vigorous physical activity (moderate-to-vigorous physical activity≥3.0 metabolic equivalents). Daily sedentary behaviour, standing still, light physical activity and moderate-to-vigorous physical activity were expressed as mean daily total time, accumulated time and number of different bouts (from 30 s to >30 min), mean daily metabolic equivalent and weekly peak metabolic equivalent levels of different bout lengths and number of breaks in sedentary behaviour. The ten-year cardiovascular disease risk was based on the Framingham risk model. Results The mean number of daily sedentary behaviour bouts was more strongly associated with cardiovascular disease risk than mean daily total time. In the best model, smaller waist circumference, greater value of mean daily metabolic equivalent levels of one-minute bouts, higher accumulated time of moderate-to-vigorous physical activity lasting ≤30 min, higher number of >5 min standing bouts and a higher number of long (>30 min) bouts of light physical activity were significantly associated with lower cardiovascular disease risk (R= 0.836). Conclusions The objectively measured number and accumulated time from different bout lengths of physical activity and sedentary behaviour were associated with cardiovascular disease risk, which is considered relevant for estimating cardiovascular diseases and for devising preventive actions.

The Scientific Foundation for the Physical Activity Guidelines for Americans, 2nd Edition

“…Recent research using device-measured physical activity and assessing a variety of cardiometabolic health indicators indicates that bouts of MVPA of any length (ie, time duration) contribute to the health benefits associated with the accumulated total volume of physical activity. [32][33][34][35][36][37][38][39][40][41][42][43][44][45][46] Of 40 comparisons within 14 studies, 78% (31 comparisons) indicated that bouts <10 minutes long were as good or better than bouts ≥10 minutes. 1 An additional 10% (4 comparisons) reported that bouts <10 minutes long were associated with risk reduction but did not make a direct comparison with bouts ≥10 minutes.…”

Exploring the effect of exercise training on testicular function

“…There is consensus amongst the scientific and clinical communities that exercise improves an individual's health and quality of life. Increasingly, exercise training is being promoted by physicians as a primary life-style prevention for several diseases, particularly those of the cardiovascular system (Xu et al 2010;Boyle et al 2012;Wu et al 2013;Aune et al 2015;Vasankari et al 2017). However, the recommendation of exercise training as a preventative or therapeutic strategy for testicular dysfunction is more problematic since data relating the impact of exercise training on testicular function are controversial.…”

Higher Number of Steps and Breaks During Sedentary Behaviour are Associated with Better Lipid Profiles

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