学龄前儿童跳跃过程中动态下肢对齐:规范概况和性别差异

IF 0.8 Q4 PSYCHOLOGY, DEVELOPMENTAL
Steen Harsted, Lise Hestbæk, Anders Holsgaard-Larsen, Henrik Hein Lauridsen
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引用次数: 0

摘要

在儿童早期,静态下肢内翻/外翻排列的自然发展是很好的理解。然而,我们对动态下肢额平面对齐的理解是有限的,我们缺乏对男孩和女孩这一现象的规范描述。本研究调查了学龄前儿童起跳时的动态下肢对齐,重点研究了其与性别、年龄和运动表现的关系。采用无标记运动捕捉技术对605名3-6岁儿童进行动态下肢对齐测量,测量膝关节与踝关节分离比(KASR)。基于KASR测量,我们将患儿分为三个运动组:外翻、中度和内翻。总体KASR评分中位数为0.86(0.80-0.96),男孩为0.89(0.81-0.98),女孩为0.85(0.78-0.92)。超过75%的儿童在起跳时表现出一定程度的动态膝外翻(KASR <然而,瓦尔格斯组中大约三分之二的孩子是女孩。运动表现的年龄调整差异很小,只有女孩的跳跃高度和长度有统计学意义。这些发现表明,在起跳时,动态膝外翻在学龄前儿童中很常见,尤其是在女孩中。动态下肢对齐与年龄和运动表现之间的潜在关系值得进一步研究。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Dynamic Lower Limb Alignment During Jumping in Preschool Children: Normative Profiles and Sex Differences
The natural development of static lower limb varus/valgus alignments during early childhood is well understood. However, our understanding of dynamic lower limb frontal plane alignments is limited, and we lack normative descriptions of this phenomenon for both boys and girls. This study investigated dynamic lower limb alignment during jump-landings in preschool children, focusing on associations with sex, age, and motor performance. Dynamic lower limb alignment was measured as the Knee-to-Ankle Separation Ratio (KASR) in 605 children aged 3–6 years using markerless motion capture. Based on KASR measurements, we categorized the children into three kinematic groups: Valgus, Intermediate, and Varus. Median KASR scores were 0.86 (0.80–0.96) overall, 0.89 (0.81–0.98) for boys, and 0.85 (0.78–0.92) for girls. Over 75% of the children exhibited some level of dynamic knee valgus during jump-landings (KASR < 1). However, roughly two-thirds of the children in the Valgus group were girls. Age-adjusted differences in motor performance were small and only statistically significant for jump height and length in girls. These findings suggest that dynamic knee valgus during jump-landings is a common occurrence in preschool children, especially among girls. The potential relationship between dynamic lower limb alignment and age and motor performance warrants further investigation.
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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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