On-time power mobility and physical activity in toddlers with motor delays: A randomized controlled trial using body-worn sensors

This study conducted a secondary analysis to objectively measure the effects of modified ride-on cars (MROCs) training in different postures on physical activity (PA) levels in children with motor delays. Data from 39 participants were analyzed in a randomized controlled trial. The participants included those using MROC in standing postures (<i>n</i> = 11, mean age = 22.87 months), MROC in sitting postures (<i>n</i> = 16, mean age = 19.53 months), and a control group that received conventional therapy (<i>n</i> = 12, mean age = 23.30 months). PA intensity was measured using an ActiGraph GT3X on the participants' wrists and right hip at weeks 1, 6, and 12 of the 12-week intervention period. This trial was registered at ClinicalTrials.gov (NCT02527356). The demographic data were similar across the groups. No significant differences were found in the interaction, group, or time effects for any of the positions (<i>p</i> > 0.05). The PA levels were consistent in at least light PA intensity range. MROC training may yield PA levels comparable to those of conventional therapy. Variations in activity and motor impairment severity could affect outcomes. Future studies should investigate factors such as task characteristics, motor delay severity, PA cutoff points, and training dosage that may influence PA intensity.