[P3-165] Inability of 6-month-old infants to push-up in the prone position and subsequent developmental delay
[Objective] To investigate the developmental course of infants who cannot push their chest off the floor with an extended arm support in the prone position at 6 months.
[Methods] In the Japan Environment and Children’s Study, ASQ-3 scores of participating children at 6 months, 1, 1.5, 2, 2.5, and 3 years were obtained. Data of 880 children who were born full term without congenital anomalies or severe perinatal complications were obtained from the University of Occupational and Environmental Health Regional Center. At 6 months, 92 infants were unable, whereas 689 infants were able to push their chest off the floor with an extended arm support. The mean ASQ-3 scores in each domain of development at each age were compared between the 2 groups.
[Results] There were significant differences in the mean ASQ-3 scores between the 2 groups for gross motor development and the 4 other domains at 6 months. The significant difference in the Gross Motor domain persisted until age 3. In the Fine Motor, Problem Solving, and Personal–Social domains, the significant differences persisted until 2, 2, and 1.5 years, respectively. The total scores at each age were significantly different from 6 months to 2 years.
[Conclusion] The infants who could not push their chest off the floor with an extended arm support at 6 months showed relatively slower development across broad areas for a few years after birth. Although differences in some areas seemed to disappear by age 3, physicians should cautiously follow infants with this characteristic.
[Methods] In the Japan Environment and Children’s Study, ASQ-3 scores of participating children at 6 months, 1, 1.5, 2, 2.5, and 3 years were obtained. Data of 880 children who were born full term without congenital anomalies or severe perinatal complications were obtained from the University of Occupational and Environmental Health Regional Center. At 6 months, 92 infants were unable, whereas 689 infants were able to push their chest off the floor with an extended arm support. The mean ASQ-3 scores in each domain of development at each age were compared between the 2 groups.
[Results] There were significant differences in the mean ASQ-3 scores between the 2 groups for gross motor development and the 4 other domains at 6 months. The significant difference in the Gross Motor domain persisted until age 3. In the Fine Motor, Problem Solving, and Personal–Social domains, the significant differences persisted until 2, 2, and 1.5 years, respectively. The total scores at each age were significantly different from 6 months to 2 years.
[Conclusion] The infants who could not push their chest off the floor with an extended arm support at 6 months showed relatively slower development across broad areas for a few years after birth. Although differences in some areas seemed to disappear by age 3, physicians should cautiously follow infants with this characteristic.