Movement-based Infant Intervention

Experimental: Movement intervention

The intervention promotes movement experience from 3 months to sitting onset in infants at risk for developmental delay (AR). The goal of the intervention is to increase amount and type of infant leg movement experience above 1200 movements per hour of awake time.

Conductual: Movement Intervention

At each visit, the caregiver will be reminded of the infant's movement rate from the last visit. The research team will help the caregiver to determine possible ways to achieve the goal of 1200 movements per hour of awake time. Strategies to increase leg movements will be encouraged based on the infant's developmental level and what they demonstrate a response to, including: shake a toy when infant moves legs, sing a line of a song when infant moves legs, change the position of the infant to encourage more leg movement, or lightly tickle the legs and feet of the infant. The intervention will be based upon the GAME (Goals - Activity - Motor Enrichment) protocol, a motor learning, environmental enrichment intervention that has recently been shown to be effective for improving motor skills in infants at high risk of cerebral palsy compared to standard care.

Movement Rate

leg movements produced per hour of awake time, assessed using wearable sensors