Maturational and situational determinants of reaching at its onset.

Autor:	Cunha AB; Department of Physical Therapy, Neuropediatrics Section, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil. Electronic address: andreabaraldi@gmail.com., Soares Dde A; Physical Therapy, Center of Biological and Health Sciences, Federal University of Mato Grosso do Sul, Postal Box 549, 79070900 Campo Grande, MS, Brazil., Carvalho Rde P; Department of Health Sciences, Federal University of São Paulo, 11015-020 Santos, SP, Brazil., Rosander K; Department of Psychology, Uppsala University, Box 1225, SE-75142 Uppsala, Sweden., von Hofsten C; Department of Psychology, Uppsala University, Box 1225, SE-75142 Uppsala, Sweden., Tudella E; Department of Physical Therapy, Neuropediatrics Section, Federal University of São Carlos, 13565-905 São Carlos, SP, Brazil.
Jazyk:	angličtina
Zdroj:	Infant behavior & development [Infant Behav Dev] 2015 Nov; Vol. 41, pp. 64-72. Date of Electronic Publication: 2015 Sep 02.
DOI:	10.1016/j.infbeh.2015.06.003
Abstrakt:	At 3 months of age, reaching behavior was measured in a group of 10 girls and 10 boys born at term. The assessments were carried out on the average 2 days after reaching onset. Reaching kinematics was measured in both supine and reclined positions. Girls reached more than boys, had straighter reaching trajectories and movements of shorter durations as well as fewer movement units. The reclined position gave rise to straighter trajectories in both girls and boys. Several anthropometric parameters were measured. Girls had less length and volume of the forearm than boys but similar upper arm volumes. There was a weak relation between kinematic and anthropometric variables. (Copyright © 2015 Elsevier Inc. All rights reserved.)
Databáze:	MEDLINE
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