Plantar response during infancy.
Cross-sectional as well as longitudinal studies on full-term urban and rural infants demonstrated that the initial extensor plantar response present in the first half of the infancy changed to a flexor plantar response in the later half. The urban infants receiving nutritional supplements showed an advance of 4 weeks over the rural infants. This process of change-over of plantar response was delayed in pre-term infants. However, two pairs of twins showed plantar response almost identical to full-term urban infants.
D000375:Aging; D003430:Cross-Sectional Studies; D005260:Female; D005528:Foot; D007839:Functional Laterality; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008137:Longitudinal Studies; D011247:Pregnancy; D012018:Reflex; D012424:Rural Population; D014427:Twins; D014505:Urban Population