• Vanessa Cristina Waetge Pires de Godoy, Fabiola Isabel Suano de Souza, Cintia Johnston, and Maria Wany Louzada Strufaldi.
• Universidade Federal de São Paulo, Escola Paulista de Medicina - São Paulo (SP), Brazil.
• Rev Assoc Med Bras (1992). 2021 Apr 1; 67 (4): 529-535.

ObjectiveThe aim of this study was to describe the motor development (MD) and growth of infants born with low birth weight (LBW) versus adequate birth weight (ABW) by using the Alberta Infant Motor Scale (AIMS).MethodsThe cross-sectional study including LBW infants (aged 6-12 months) followed at an outpatient clinic from a University Hospital in Brazil and a group of infants of the same age with ABW. The variables were recorded as maternal, birth, and infant conditions. The infants were assessed for MD using the AIMS.ResultsIn total, 98 infants (38 LBW versus 60 ABW) were evaluated and no statistically significant differences were found in demographic characteristics and in the AIMS results. The AIMS results of the total sample were suspicious or abnormal MD in 44 (45%) of total infants. Higher frequency of suspected or abnormal motor behavior was found in the age group between 9 and 12 (54.6%) months.ConclusionsA frequency of 45% of suspected or abnormal behavior was observed in the evaluated infants, with a higher frequency of occurrence in those aged 9-12 months (54.6%).

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