The multi-directional reach test in children with Down syndrome

Area of Science:

• Pediatric Physical Therapy
• Developmental Pediatrics
• Biomechanical Analysis

Background:

• Children with Down syndrome (DS) often exhibit motor delays and challenges with balance and postural control.
• Understanding their movement strategies during functional tasks like reaching is crucial for targeted interventions.

Purpose of the Study:

• To investigate the limits of stability (LOS) and movement patterns during reaching in children with Down syndrome (DS) aged 7-12 years.
• To compare the reaching performance and strategies of children with DS to age-matched typically developing (TD) children.

Main Methods:

• The Multi-Directional Reach Test (MDRT) was administered to 30 children with DS and 30 TD children (aged 7-12 years).
• Participants reached as far as possible in four directions while standing, using self-selected movement patterns.
• Movement patterns were analyzed and classified by experienced pediatric physical therapists.

Main Results:

• Children with DS aged 7-9 had significantly shorter reach distances than TD children in forward and backward directions.
• DS children aged 7-9 also showed smaller reach distances than TD children aged 10-12 across all directions.
• Children with DS employed hip and mixed strategies, unlike the adult-like patterns seen in TD children.

Conclusions:

• Children with DS have reduced anteroposterior (AP) stability limits compared to TD peers, particularly in the backward direction.
• These differences in stability and movement patterns may indicate underlying postural control and balance deficits in children with DS.
• Findings can aid therapists in identifying and addressing balance issues in children with DS.