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J Hand Ther. 2002 Oct-Dec;15(4):340-6.

An exploratory look at hand strength and hand size among preschoolers.

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Department of Clinical Occupational Therapy, Columbia University, New York, New York 10032, USA.


The purpose of this study was to develop an initial understanding about grip strength, pinch strength and hand size in normally developing 3-, 4-, and 5-year-old children. This study also investigated whether there were relationships among lowing variables: hand strength, hand size, age, and gender. A Jamar dynamometer was used to measure grip strength, and a Jamar pinch gauge was used to measure lateral pinch strength. The study population consisted of 81 preschool children from culturally an economically diverse communities in New York City. Hand strength and hand size were found to increase with each age level. The 5-year-olds were strongest in grip and pinch ability and had larger hands than the 3-year-olds and 4-year-olds. There was no statistically significant difference observed between the boys and the girls or the preferred hand in terms of hand strength.

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