期刊
NUTRIENTS
卷 14, 期 16, 页码 -出版社
MDPI
DOI: 10.3390/nu14163304
关键词
Duchenne muscular dystrophy; obesity; clinical outcomes; physical function; obstructive sleep apnoea; fractures
资金
- Monash University
- Duchenne Parent Project NL
- Department of Health Public Health and Chronic Disease Program [[PS3431928]-P05255-4-G5Y1VJE]
- National Health and Medical Research Council
DMD patients, especially young people, have a high prevalence of obesity, which may negatively affect clinical outcomes, including an increased risk of fractures and OSA, as well as potential impacts on physical function milestones. Early weight management interventions are therefore crucial in this population.
Background: Duchenne muscular dystrophy (DMD) is a severe X-linked neuromuscular disorder. Young people with DMD have high rates of obesity. There is emerging evidence that a higher BMI may negatively affect clinical outcomes in DMD. This study aimed to explore the relationship between obesity and clinical outcomes in DMD. Methods: This was a retrospective clinical audit of young people (two-21 years) with DMD. Height and weight were collected to calculate BMI z-scores to classify obesity, overweight and no overweight or obesity (reference category). Cox proportional hazards models determined the impact of obesity at five to nine years on clinical milestones including time to: loss of ambulation, timed function test cut-offs, obstructive sleep apnoea (OSA) diagnosis and first fracture. Results: 158 young people with DMD were included; most (89.9%) were steroid-treated. Mean follow-up was 8.7 +/- 4.7 years. Obesity prevalence increased from age five (16.7%) to 11 years (50.6%). Boys with obesity at nine years sustained a fracture earlier (hazard ratio, HR: 2.050; 95% CI: 1.038-4.046). Boys with obesity at six to nine years were diagnosed with OSA earlier (e.g., obesity nine years HR: 2.883; 95% CI: 1.481-5.612). Obesity at eight years was associated with a 10 m walk/run in 7-10 s occurring at an older age (HR: 0.428; 95% CI: 0.207-0.887), but did not impact other physical function milestones. Conclusions: Although 50% of boys with DMD developed early obesity, the impact of obesity on physical function remains unclear. Obesity puts boys with DMD at risk of OSA and fractures at a younger age. Early weight management interventions are therefore important.
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