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  • Title: Association between physical activity and bone in children with Prader-Willi syndrome.
    Author: Duran AT, Wilson KS, Castner DM, Tucker JM, Rubin DA.
    Journal: J Pediatr Endocrinol Metab; 2016 Jul 01; 29(7):819-26. PubMed ID: 27159915.
    Abstract:
    BACKGROUND: The aim of the study was to determine if physical activity (PA) is associated with bone health in children with Prader-Willi syndrome (PWS). METHODS: Participants included 23 children with PWS (age: 11.0±2.0 years). PA, measured by accelerometry, was categorized into light, moderate, vigorous and moderate plus vigorous intensities. Hip, total body minus the head (body), bone mineral content (BMC), bone mineral density (BMD) and BMD z-score (BMDz) were measured by dual X-ray absorptiometry. Separate hierarchical regression models were completed for all bone parameters, PA intensity and select covariates. RESULTS: Moderate PA and select covariates explained the most variance in hip BMC (84.0%), BMD (61.3%) and BMDz (34.9%; p<0.05 for all). Likewise, for each body parameter, moderate PA and select covariates explained the most variance in body BMC (75.8%), BMD (74.4%) and BMDz (31.8%; p<0.05 for all). CONCLUSIONS: PA of at least moderate intensity appears important for BMC and BMD in children with PWS.
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