Spatial, But Not Temporal, Kinematics of Spontaneous Upper Extremity Movements Are Related to Gross and Fine Motor Skill Attainment in Infancy

IF 0.8 Q4 PSYCHOLOGY, DEVELOPMENTAL Journal of Motor Learning and Development Pub Date : 2021-01-01 DOI:10.1123/jmld.2020-0035
Rachel Bican, L. Lowes, L. Alfano, Mike McNally, Emily Durbak, X. Pan, J. Heathcock
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Abstract

Background: Spontaneous upper extremity movements in infancy provide insight on neuromotor development. Spatiotemporal kinematics have been used to evaluate typical development of reaching, a foundational motor skill in infancy. This study evaluates the relationship between spontaneous upper extremity movements, not elicited by a toy, and motor skill attainment. Methods: N = 12 healthy infants (2–8 months) participated in this longitudinal study (one to four sessions). Motor skills were assessed with the Bayley Scales of Infant and Toddler Development, 3rd Edition: gross motor subtest (GM) and fine motor subtest. Spontaneous upper extremity movements were collected using 3D motion capture technology. Infants were placed in supine for three to twelve 30-s trials, and their movements were recorded. Repeated measure correlation coefficients (Rmcorr) were used to evaluate relationships between variables. Results: There were significant, moderate, positive relationships between the straight distance from start to end of a movement and (a) fine motor score (Rmcorr = .55, p = .03), (b) GM score (Rmcorr = .63, p = .01), and (c) age (Rmcorr = .56, p = .02). There was a significant, moderate, negative relationship between straightness ratio and GM score (Rmcorr = −.52, p = .047). Discussion: Fine and GM skills are related to the straight distance from start to end of a movement and the straightness ratio of underlying spontaneous upper extremity movements.
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空间的,而不是时间的,自发上肢运动的运动学与婴儿的粗大和精细运动技能的获得有关
背景:婴儿期自发上肢运动为神经运动发育提供了线索。时空运动学已被用来评估典型的发展伸手,一个基本的运动技能在婴儿期。本研究评估自发性上肢运动(非由玩具引起)与运动技能获得之间的关系。方法:N = 12名健康婴儿(2-8个月)参与本纵向研究(1 - 4期)。运动技能采用Bayley婴幼儿发展量表第3版:大动作子测试(GM)和精细动作子测试进行评估。采用3D动作捕捉技术收集上肢自发运动。婴儿被放置在仰卧位进行3到12次30秒的试验,并记录他们的运动。重复测量相关系数(Rmcorr)用于评价变量之间的关系。结果:运动开始到结束的直线距离与(a)精细运动评分之间存在显著的、中度的正相关(Rmcorr =。55, p = .03), (b) GM评分(Rmcorr =。63, p = .01), (c)年龄(Rmcorr =。56, p = .02)。直度比与GM评分呈显著、中度负相关(Rmcorr = -)。52, p = .047)。讨论:Fine和GM技能与一个动作从开始到结束的直线距离和潜在的自发上肢运动的直线比有关。
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来源期刊
Journal of Motor Learning and Development
Journal of Motor Learning and Development Medicine-Orthopedics and Sports Medicine
CiteScore
2.20
自引率
15.40%
发文量
13
期刊介绍: The Journal of Motor Learning and Development (JMLD) publishes peer-reviewed research that advances the understanding of movement skill acquisition and expression across the lifespan. JMLD aims to provide a platform for theoretical, translational, applied, and innovative research related to factors that influence the learning or re-learning of skills in individuals with various movement-relevant abilities and disabilities.
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