Hand preference shows limited influence on the magnitude but modulates the directional organization of upright posture control during a reaching and grasping task: a cross-sectional study in healthy women.
BACKGROUND: According to the Dynamic Dominance Model (DDM), the dominant (preferred) and non-dominant (non-preferred) upper limbs are specialized for different control mechanisms, which may influence postural regulation during goal-directed manual actions. AIM: To compare postural control during a r...
| Publicado en: | Brazilian Journal of Motor Behavior Vol. 20; no. 1; pp. 1 - 9 |
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| Autores principales: | , , , , , |
| Formato: | research tables/charts Journal Article |
| Publicado: |
Brazilian Journal of Motor Behavior
2026
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| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=ccm&AN=196288995&site=ehost-live header: @attributes: shortDbName: ccm uiTerm: 196288995 longDbName: CINAHL Complete uiTag: AN controlInfo: bkinfo: dissinfo: jinfo: jid: 19805586 MV7G jtl: Brazilian Journal of Motor Behavior issn: 19805586 maglogo: N pubinfo: dt: 2026 vid: 20 iid: 1 pid: 65400 pub: Brazilian Journal of Motor Behavior artinfo: ui: 196288995 196288995 196288995 10.20338/bjmb.v20i1.520 196288995 ppf: 1 ppct: 8 formats: tig: atl: Hand preference shows limited influence on the magnitude but modulates the directional organization of upright posture control during a reaching and grasping task: a cross-sectional study in healthy women. aug: au: BARBOSA, FERNANDA N. GARCIA, MARCO A. C. FONSECA, DIOGO S. OKAZAKI, VICTOR H. A. FERNANDES, LIDIANE A. LEMOS, THIAGO affil: Programa de Pós-Graduação em Ciências da Reabilitação e Desempenho Físico-Funcional, Faculdade de Fisioterapia, Universidade Federal de Juiz de Fora, Juiz de Fora, MG, Brazil sug: subj: Balance, Postural Hand Physiology Psychomotor Performance Evaluation Task Performance and Analysis Human Funding Source Female Adult Cross Sectional Studies Comparative Studies Convenience Sample Descriptive Statistics Data Analysis Software T-Tests One-Way Analysis of Variance Confidence Intervals Power Analysis Post Hoc Analysis Motor Activity Adult: 19-44 years Female ab: BACKGROUND: According to the Dynamic Dominance Model (DDM), the dominant (preferred) and non-dominant (non-preferred) upper limbs are specialized for different control mechanisms, which may influence postural regulation during goal-directed manual actions. AIM: To compare postural control during a reaching and grasping task performed in an upright posture with the preferred and non-preferred upper limbs across different movement directions. METHODS: Thirty right-handed participants performed a reaching and grasping task in multiple directions and movement conditions using both upper limbs. Postural control was assessed using a force platform by analyzing the center of pressure (CoP) area, orientation (major elliptical axis), mean velocity, antero-posterior and medial-lateral excursion, and their lateral symmetry indices (LSIs). LSI values were compared to zero using t-tests, and task conditions were analyzed using repeated-measures ANOVA. RESULTS: Traditional CoP measures (area, velocity, and antero-posterior and mediallateral excursion) did not differ across limbs or task conditions (all P-values > 0.065). However, the elliptical major angle revealed significant task- and limb-dependent effects, indicating changes in the directional organization of postural sway. INTERPRETATION: Although upper limb preference did not influence the magnitude of postural sway, it modulated the spatial organization of postural control. Within the DDM, these findings suggest that lateralized control mechanisms may affect coordination strategies rather than global stability. Thus, postural adjustments during upright reaching and grasping appear to be shaped by both task demands and limb-specific organization, even when overall stability is preserved. pubtype: Academic Journal doctype: research tables/charts Journal Article ougenre: Article language: English refInfo: holdings: @attributes: islocal: N |
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