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Maturational and situational determinants of reaching at its onset
Univ Fed Sao Carlos, Neuropediat Sect, Dept Phys Therapy, BR-13565905 Sao Carlos, SP, Brazil..
Univ Fed Mato Grosso do Sul, Ctr Biol & Hlth Sci, Phys Therapy, BR-79070900 Campo Grande, MS, Brazil..
Univ Fed Sao Paulo, Dept Hlth Sci, BR-11015020 Santos, SP, Brazil..
Uppsala University, Disciplinary Domain of Humanities and Social Sciences, Faculty of Social Sciences, Department of Psychology.
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2015 (English)In: Infant Behavior and Development, ISSN 0163-6383, E-ISSN 1879-0453, Vol. 41, 64-72 p.Article in journal (Refereed) PublishedText
Abstract [en]

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.

Place, publisher, year, edition, pages
2015. Vol. 41, 64-72 p.
Keyword [en]
Reaching, Gender, Infant, Motor development
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URN: urn:nbn:se:uu:diva-270631DOI: 10.1016/j.infbeh.2015.06.003ISI: 000365375100008PubMedID: 26311469OAI: oai:DiVA.org:uu-270631DiVA: diva2:890225
EU, European Research Council, StG12-312292-CACTUS
Available from: 2016-01-01 Created: 2016-01-01 Last updated: 2016-01-01

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Rosander, Kerstinvon Hofsten, Claes
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