Desenvolvimento da assimetria manual

Abstract

RESUMO A reduzida tendência para a sinistralidade têm sido documentadas em diversas culturas, em diferentes grupos com patologias identificadas, e em diferentes faixas etárias. Pela importância da funcionalidade manual torna-se pertinente compreender o desenvolvimento do comportamento assimétrico, quer ao nível da preferência quer da proficiência e funcionalidade. O presente ensaio consubstancia-se na descrição do desenvolvimento da preferência e proficiência manual relacionadas com a idade e com o género, e sua caracterização em condições patológicas. As evidências provenientes de vários estudos mostram que a assimetria manual é uma característica que, apesar de se estabelecer durante os primeiros anos de vida, continua a desenvolver-se ao longo da idade. O género, o estado neurológico do sujeito e o tipo de sociedade em que este está inserido são factores que parecem ter efeito no desenvolvimento da preferência manual e na consequente assimetria manual. Pode-se assim dizer que esta resulta de factores biológicos, sociais e culturais característicos de um determinado espaço geográfico e num período de tempo particular.

Proceedings of the II Congresso Internacional de Atividade Física (International Congress of Physical Activity), 28, 29, 30 of September 2023, Castelo Branco, Portugal

“…The aim of this study was to analyse manual asymmetry in children attending the 2nd and 4th years of primary school in terms of handgrip strength. According to the literature, male children can be expected to have greater handgrip strength, and this tendency is even more evident the older the child is (Rodrigues et al, 2010). This was borne out by the results we obtained, namely confirming the existence of statistically significant differences in 4th grade boys in the production of handgrip strength between the preferred and non-preferred hand.…”

“…According to the literature, male children are expected have greater handgrip strength, and this tendency is even more evident the older the child gets (Rodrigues et al, 2010). The same authors also add that genetic and non-genetic factors have been proposed to explain hand preference in humans.…”

Movement Kinematics and Interjoint Coordination Are Influenced by Target Location and Arm in 6-Year-Old Children

“…Specifically, children in the current study have just started elementary school, and as such are learning new ways of interacting with the environment and via participation in structured and developmentally appropriate physical education classes where fundamental movement skills and physical competencies can be reinforced through professional advice (Olrich, 2002 ). Additionally, classroom activities that require the use of computer mouse, cutting with scissors, and drawing further contribute to the development of several motor skills, including motor coordination, fine and gross motor skills, and aiming performance (McManus et al, 1988 ; Rodrigues et al, 2010 ). The coordination of several muscles or muscle groups in the performance of rapid aiming movements develops gradually throughout the childhood years, due in large part to the extensive psychomotor experience.…”

Integrated sensory motor system in prematurely born children

“…On the other hand, the tendency to prefer the right hand, typical in the adult population, seems to be already present at the beginning of life. Although this preference is more evident when children start attending school, its traces can be observed even before birth (25) .…”