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Leg Movement Rate before and after a Caregiver-Provided Intervention for Infants at Risk of Developmental Disability:
Marcelo R Rosales1, Weiyang Deng1, Ryota Nishiyori2
1Herman Ostrow School of Dentistry, Division of Biokinesiology and Physical Therapy, University of Southern California, Los Angeles, California, USA.
Physical & Occupational Therapy in Pediatrics
|October 13, 2021
Summary
Caregiver-provided in-home interventions can increase leg movement rates in infants at risk for developmental disabilities. High caregiver adherence and quality interaction were maintained throughout the study.
Area of Science:
- Developmental Pediatrics
- Motor Development
- Infant Health
Background:
- Infants at risk for developmental disabilities often exhibit reduced motor activity.
- Early intervention is crucial for improving motor outcomes in at-risk infants.
- Caregiver involvement is key in implementing effective infant interventions.
Purpose of the Study:
- To evaluate the impact of a caregiver-provided in-home intervention on the daily leg movement rate of infants at risk for developmental disabilities.
- To assess caregiver adherence and the quality of caregiver-child interaction during the intervention.
- To explore the potential of leg movement rate as an outcome measure for infant interventions.
Main Methods:
- A cohort of twelve infants at risk for developmental disabilities and their caregivers participated.
- The intervention focused on increasing leg movements and was administered between 3- and 6-months corrected age.
- Infants were assessed monthly for leg movement rates, caregiver adherence, and caregiver-child interaction quality (using NCAST).
Main Results:
- Infants increased their daily leg movement rate post-intervention (p=0.040).
- Caregivers demonstrated high adherence (Median: 89%) and good quality of interaction (Median NCAST total: 46).
- Adherence and interaction quality remained consistent throughout the intervention period.
Conclusions:
- Caregiver-provided in-home interventions can effectively enhance leg movement rates in at-risk infants.
- Leg movement rate shows promise as a measurable outcome for assessing infant motor practice and progress during interventions.
- The study highlights the feasibility and effectiveness of integrating motor interventions into the home environment with strong caregiver support.

