0000000000514263
AUTHOR
Benjamin Douglas
Characterization of Intervertebral Disc Changes in Asymptomatic Individuals with Distinct Physical Activity Histories Using Three Different Quantitative MRI Techniques
(1) Background: Assessments of intervertebral disc (IVD) changes, and IVD tissue adaptations due to physical activity, for example, remains challenging. Newer magnetic resonance imaging techniques can quantify detailed features of the IVD, where T2-mapping and T2-weighted (T2w) and Dixon imaging are potential candidates. Yet, their relative utility has not been examined. The performances of these techniques were investigated to characterize IVD differences in asymptomatic individuals with distinct physical activity histories. (2) Methods: In total, 101 participants (54 women) aged 25&ndash
Count- versus MAD-based accelerometry-assessed movement behaviors and associations with child adiposity and fitness
usc Estimations of time spent sedentary and in various physical activity intensities may vary according to data reduction methods applied. This study compared associations between children's accelerometer data and adiposity and fitness markers using open source (mean amplitude deviation, MAD) and proprietary (counts) data reduction methods. Complete-case accelerometer, adiposity (Body Mass Index z-score, waist circumference), and fitness (cardiorespiratory, musculoskeletal) data from 118 children (10.4 ± 0.6 years, 49% girls) were analyzed. Estimates of sedentary behavior, light-, moderate-, vigorous- (VPA), and moderate- to vigorous-intensity (MVPA) physical activity were calculated using …
Count‐ versus MAD‐based accelerometry‐assessed movement behaviors and associations with child adiposity and fitness
Estimations of time spent sedentary and in various physical activity intensities may vary according to data reduction methods applied. This study compared associations between children’s accelerometer data and adiposity and fitness markers using open source (mean amplitude deviation; MAD) and proprietary (counts) data reduction methods. Complete-case accelerometer, adiposity (Body Mass Index z-score, waist circumference), and fitness (cardiorespiratory, musculoskeletal) data from 118 children (10.4±0.6 years, 49% girls) were analysed. Estimates of sedentary behaviour, light-, moderate-, vigorous- (VPA) and moderate- to vigorous-intensity (MVPA) physical activity were calculated using count-…