Varations in grasping and throwing patterns as a function of ball size

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Bibliographic Details
Title translated into German:Veraenderungen in den Greif- und Wurfmustern als eine Funktion der Ballgroesse
Author:Burton, Allen W.; Greer, Nancy L.; Wiese-Bjornstal, Diane M.
Published in:Pediatric exercise science
Published:5 (1993), 1 , S. 25-41, Lit.
Format: Publications (Database SPOLIT)
Publication Type: Journal article
Media type: Print resource
Language:English
ISSN:0899-8493, 1543-2920
Keywords:
man
Online Access:
Identification number:PU199404069021
Source:BISp

Abstract

This study examined the effect of ball size on the movement patterns used by children and adults to grasp a ball and then to throw it as hard as possible. A total of 104 kindergarten, second-grade, fourth-grade, eighth-grade, and young adult males and females were asked to pick up six styrofoam balls of different diameters (from 4.8 to 29.5 cm) four times each as they were presented in random order, and then throw them as hard as possible at a wall 6.7 m away. Transitions from one- to two-hand grasps were made as ball diameters increased, with older subjects switching at significantly, larger diameters than younger subjects (p<.0001); however, when ball size was scaled to hand size, older subjects switched at significantly smaller relative diameters than younger subjects (p<.01), indicating that hand size may be a critical factor in determining grasp form. Transitions from one- to two-hand throws were made by lessthan 25 of the subjects (mostly kindergartners and females), demonstrating a strong preference by older children and adults for throwing with one hand, even with ball diameters larger than a subjects hand size. Verf.-Referat