Abstract
Aims The aim of this study was to characterize the motor development of 5–12 year-old Santal children of the Purulia district of West Bengal, India. The effect of socioeconomic and nutritional status on motor development was also examined. Study design 841 (427 boys and 414 girls) Santal children were examined in this cross-sectional study. The nutritional status of each child was assessed by height-for-age z-score based on WHO reference data. Socioeconomic status (SES) was measured by the updated Kuppusswami scale. Motor development was measured using the Bruininks–Oseretsky Test of Motor Proficiency-Second Edition, Short Form (BOT-2). Results Sex had a significant ( p < 0.05) effect on children's score of running speed and agility, upper-limb coordination and strength with higher scores for boys than girls. Children with a height-for-age z-score of − 2 or less were significantly more likely to have a total BOT-2 z-score of − 2 or less compared with children at a healthier height-for-age range ( Χ 2 = 271.136, p < 0.0001). Well-nourished children scored significantly higher ( p < 0.05) than undernourished children in total BOT-2 score and in all individual motor subtests. Regression analysis showed that nutritional status, socioeconomic status and height have a significant impact on total BOT-2 score ( p < 0.001). Age and sex were found to be influencing factors in motor development. Conclusion Santal children's motor proficiency is around the 1st percentile when compared with normative BOT-2 data. This may be, in part, a result of nutritional and economic disparities between children on who the BOT-2 was normed and Santal children, supporting the role of nutrition in motor development. Additionally, Santal children with lower SES and poorer nutritional status have lower motor proficiency compared with Santal children with comparatively higher SES and nutritional status.
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