Intra-Individual Variability in Gross Motor Development in Healthy Full-Term Infants Aged 0-13 Months and Associated Factors during Child Rearing.

The gross motor development of a typically developing infant is a dynamic process, the intra-individual variability of which can be investigated through longitudinal assessments. Changes in gross motor development vary, according to the interaction of multiple sub-systems within the child, environment, task setting, and experience or practice of movement. At present, studies on environmental factors that influence gross motor development in full-term infants over time are limited.

Gross motor development of Thai healthy full-term infants aged from birth to 14 months using the Alberta Infant Motor Scale: Inter individual variability.

Background: The gross motor percentiles of the Alberta Infants Motor Scale (AIMS) have been commonly referenced in research. Cross-cultural assessment of gross motor development during the first year of life is suggested as diverse child-rearing practices can cause inter-variability. The main aim of this study was to develop an AIMS percentile curve for typically developing home-raised infants in the northeastern part of Thailand.