Purpose Wrist accelerometers are being used in population level surveillance (i.e. NHANES) of physical activity (PA) but more research is needed to evaluate the validity of a wrist-worn device for predicting PA. In this study we compare accelerometers worn on the wrist and each hip for predicting PA type ...
Introduction Assessing time spent in different activity types may be important for early detection of mobility limitations in older adults. To date, accelerometer-based activity type prediction using machine learning algorithms have not been validated for this segment of the population. Therefore, the aim of this study was to use Random ...
Introduction In order to obtain accurate estimates of sedentary time and physical activity in young children objective methods are needed. Wrist worn accelerometers have shown good feasibility among participants in previous studies. The acceleration signal collected by many commercially available activity monitors is usually summarized in an arbitrary unit (counts). ...
Physical activity is becoming increasingly recognized as valuable to cancer patients during treatment and rehabilitation. Therefore strategies and measures to encourage patients to become more active and to achieve physical activity recommendations are of great importance. Purpose The study evaluated an accelerometer based biofeedback device by measuring the change of ...
A physically active lifestyle and quality sleep are associated with lower risk for obesity and cardiovascular disease. Cross-sectional studies demonstrate that greater physical activity (PA) is associated with better quality sleep. However, few studies have examined this relationship using objective measures. Additionally, few studies have examined the directionality of the ...
Sedentary occupational behavior may contribute to positive energy balance and weight gain. Strategies to reduce excessive sedentary behavior and increase workplace ambulatory activity are needed. Purpose To investigate the initial effects of treadmill workstation adoption on work-related ambulatory activity and sedentary time in overweight/obese office workers. Methods Volunteers (n=17; ...
Purpose To examine characteristics of accelerometer-assessed sedentary behavior among older women. Methods An ancillary study to the Women’s Health Study is collecting 7 days of accelerometer-assessed (Actigraph GT3X+) physical activity and sedentary behavior data in ~15,000 women. This analysis includes data from the first 5,032 (mean age, 70.1 yr) women with ≥4 days ...
Optimal sleep duration (7-8h), moderate-to-vigorous intensity physical activity (MVPA) and light-intensity activity are beneficially associated with cardiometabolic outcomes and related biomarkers, while sedentary time and long (≥9h) or short (<7h) sleep duration are detrimentally associated. Purpose This study examined whether sleep duration modified the relationship between both sedentary/...
Purpose: Studies estimating the contribution of physical activity (PA) to the development of body mass index (BMI) in critical periods of childhood are warranted. Therefore, we have prospectively investigated this relationship in boys and girls of the KOALA Birth Cohort study, the Netherlands, in the period around adiposity rebound (i....
Accelerometers-based activity monitors are commonly used to measure physical activity energy expenditure (PAEE). Newly designed wrist and hip-worn triaxial accelerometers claim to accurately predict PAEE across a wide range of activities. Purpose To determine if the Nike FuelBand (NFB), Fitbit (FB) and ActiGraph GT3X+ (AG) accurately estimate PAEE in ...