The impact of early powered mobility training in families and children with Spinal Muscular Atrophy Type I.
Cristina Isabel Díaz-López, Rocío Palomo-Carrión, María Coello-Villalón et al.
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In 30 seconds
This randomized, waitlist-controlled, single-blinded trial in Spain evaluated 12 weeks of powered mobility training with modified ride-on toy cars in 16 children aged 10 months to 5 years with spinal muscular atrophy type I, followed for a further 4 weeks. The experimental group showed clinically meaningful gains in Daily Activities and Mobility from week 4 (z = 0.41-0.72; g = 0.29-0.53). Social/Cognitive improvements exceeded the measurement-error threshold by weeks 8-16. Quality-of-life differences were significant at week 4 (p = 0.03; g = 0.93), but did not reach that threshold.
Key findings
- Daily Activities and Mobility improved by week 4, with z = 0.41-0.72 and g = 0.29-0.53.
- Social/Cognitive improvements exceeded SEMm by weeks 8-16.
- Quality of life differed significantly at week 4 (p = 0.03; g = 0.93), but remained below the SEMm threshold.
- Parental stress reductions were statistically significant at weeks 4, 8, and 16 (p < 0.05), but within SEMm margins.
Why it matters
Early powered mobility training may support functional independence in young children with SMA I, with gains in daily activities and mobility emerging during the intervention. The findings also suggest that functional improvements do not necessarily translate into comparable changes in quality of life or participation, underscoring the potential importance of psychosocial and environmental supports.
What to keep in mind
The trial included only 16 children and follow-up extended just 4 weeks beyond the 12-week intervention. Several reported changes, including quality of life and parental stress, did not exceed the stated SEMm threshold.