Introduction Accelerometers provide objective measurements of human activity and have been used extensively in health studies. In many of these studies, analysis was done not based on the raw data, but on summarized metrics like “activity counts”, which are the result of proprietary pre-processing software. Such metrics do not have ...
Purpose Increased all-cause mortality has been consistently associated with longer (8-10 hours+) self-reported sleep duration. The possibility that longer sleep may impact survival through inactive lifestyles was proposed by Morgan (2007), and subsequently tested by Hartescu et al (2012) who concluded that, independent of health status, longer sleep duration, and the inevitably ...
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). ...
Purpose An active lifestyle is crucial for co-morbidity prevention in pediatric cardiac transplant patients(CTxP). The purpose of this study was to evaluate daily physical activity in CTxP and to identify relationships between anthropometric measurements, cardiac function and physical activity habits. Methods Anthropometric measures and resting 2D echocardiograms were obtained. ...
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 ...
An examination of the effects of a training program that maximizes caloric expenditure may help gain a better understanding of potential strategies that may be used in future exercise training programs targeting weight loss. Purpose The purpose of this study was to explore whether endurance training alters energy balance via ...
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 ...