Purpose There is considerable debate about the possibility of physical activity compensation. This study examined whether increased levels in physical activity and/or sedentary behaviour on one day were predictive of lower levels in these behaviours on the following day (compensatory mechanisms) among children. Methods Two hundred and forty-eight children (121 ...
The validity of inclinometer measurements by ActiGraph GT3X+ (AG) accelerometer, when analysed with the Acti4 customised software, was examined by comparison of inclinometer measurements with a reference system (TrakStar) in a protocol with standardised arm movements and simulated working tasks. The sensors were placed at the upper arm (distal ...
Background Physical activity (PA) and sedentary behavior (SED) may have independent effects on health and disease. This might be due to PA and SED having distinct effects on lipoprotein metabolism. The aim of this study was to determine associations between lipoprotein subclass particle concentrations (-P) and accelerometer-measured SED and moderate-to-vigorous ...
Background Previous research has reported peak vertical acceleration and peak loading rate thresholds beneficial to bone mineral density (BMD). Such thresholds are difficult to translate into meaningful recommendations for physical activity. Cadence (steps/min) is a more readily interpretable measure of ambulatory activity. Objective To examine relationships between cadence, peak ...
Purpose Gestational diabetes mellitus (GDM) is associated with adverse metabolic outcomes after delivery. Physical activity practice improves the inflammatory profile; however, whether this association exists in women with prior GDM remains unknown. Our objective was to examine the cardiometabolic and inflammatory risk factors associated with accelerometer-based measures of physical activity ...
Background The aim of this study was to validate a triaxial accelerometer setup for identifying everyday physical activity types (ie, sitting, standing, walking, walking stairs, running, and cycling). Methods Seventeen subjects equipped with triaxial accelerometers (ActiGraph GT3X+) at the thigh and hip carried out a standardized test procedure including ...
Introduction Estimates of objectively measured physical activity among older adults differ depending on the cut points used to define intensity. Our objective was to assess 1) moderate to vigorous physical activity (MVPA), exploring differences in prevalence depending on the cut point used, and 2) sedentary behavior, among US adults aged 60 years or ...
Background & Aims More than 50% of patients with chronic hepatitis C with only mild liver disease complain about chronic fatigue, daytime sleepiness and poor sleep quality. The aim of the present study was to characterize and objectify the sleep disturbances in hepatitis C virus-infected patients. Methods Twenty-five women who had ...
Purpose To assess the influence of anatomical placement of an accelerometer on physical activity energy expenditure (PAEE) prediction in manual wheelchair users. Methods Ten accelerometer units (Actigraph GT3X+) were attached to a multi-axis shaker table and subjected to a sinusoidal oscillation procedure to assess mechanical validity and reliability. Fifteen ...
Background Few studies to date have directly compared the Actigraphs GT1M and the GT3X, it would be of tremendous value to know if these accelerometers give similar information about intensities of PA. Knowing if output is similar would have implications for cross-examination of studies. The purpose of the ...