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Bone health measured using quantitative ultrasonography in adult males with muscular dystrophy.

Morse, CI and Smith, J and Denny, A and Tweedale, J and Searle, ND and Winwood, K and Onambele-Pearson, GL (2016) Bone health measured using quantitative ultrasonography in adult males with muscular dystrophy. The Journal of Musculoskeletal and Neuronal Interactions, 16 (4). pp. 339-347. ISSN 1108-7161

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Abstract

To compare muscle and bone health markers in adult males (aged 20-59 yrs) with and without muscular dystrophy (MD).Participants included 11 Fascioscapulohumeral (FSH), 11 Becker's (Be), 9 limb girdle (LG), 11 Duchenne (DMD), and 14 non-dystrophic controls (CTRL). Physical activity was assessed using Bone (BPAQ) and disability specific (PASIPD) questionnaires. Bone QUS provided T- and Z scores from the Distal Radius (DR) and Mid-shaft tibia (MST). Tibialis anterior cross sectional area (TAACSA) was measured using B-mode ultrasound. Grip strength was measured in all but DMD.Physical activity was lower in DMD, FSH and BeMD than CTRL (P<0.05), and lower in DMD than other MDs (P<0.01). T and Z scores were lower in DMD and Be than CTRL (DR, P<0.05); and lower in DMD than CTRL, LG, and FSH (MST, P<0.01). TAACSA and grip strength was 35-59% and 50-58% smaller in MD than CTRL, respectively (P<0.01). Within MD, BPAQ correlated with bone QUS measures (r=0.42-0.38, P<0.01). PASIPD correlated with grip strength (r=0.65, P<0.01) and TAACSA (r=0.46, P<0.01).Muscle size, strength, and bone health was lower in adult males with MD compared to adult males without MD, the extent of this is partially determined by physical activity.

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