Introduction: In this study we explored walking activity in a large cohort of boys with Duchenne muscular dystrophy (DMD).
Methods: Step activity (monitored for 7 days), functional ability, and strength were quantified in ambulatory boys (5-12.9 years of age) with DMD and unaffected boys. Ambulatory status was determined 2 years later.
Results: Two to 5 days of activity monitoring predicted weekly step activity (adjusted R = 0.80-0.95). Age comparisons revealed significant declines for step activity with increasing age, and relationships were found between step activity with both function and strength (P < .01). Our regression model predicted 36.5% of the variance in step activity. Those who were still ambulatory after 2 years demonstrated baseline step activity nearly double that of those who were no longer walking 2 years later (P < .01).
Discussion: Step activity for DMD is related to and predictive of functional declines, which may be useful for clinical trials.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC8314165 | PMC |
| http://dx.doi.org/10.1002/mus.27119 | DOI Listing |
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