Overall, the purpose of this dissertation research is to investigate trunk control in young children with DS. This will be done in three studies: 1. The purpose of the first study is to determine the reliability of the SATCo in young children with DS. The hypothesis is that the SATCo will demonstrate good (Īŗ \> 0.8) interrater and intrarater reliability. 2. The purpose of the second study is to examine the validity of the SATCo with the GMFM-66 and determine whether age and SATCo score predict GMFM-66 score in young children with DS. The hypotheses are that 1) the SATCo will show concurrent validity with the GMFM-66, and 2) both age and SATCo scores will be significant predictors of GMFM-66 scores. 3. The purpose of the third study is to explore the impact of a dynamic standing device (Upsee) on trunk control and motor skills in young children with DS. The hypothesis is that participants will demonstrate a greater change in scores on the SATCo and the GMFM during the dynamic standing home program phase than during the baseline phases.
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Segmental Assessment of Trunk Control
Timeframe: 20 minutes
Gross Motor Function Measure
Timeframe: 40 minutes