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Virtual Motivation: The Psychological and Transfer of Learning Effects of Immersive Virtual Reality Practice 虚拟动机:沉浸式虚拟现实实践学习效果的心理与迁移
Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-08-01 DOI: 10.1123/jmld.2022-0084
Logan T. Markwell, Joei R. Velten, Julie A. Partridge, Jared M. Porter
Previous research has shown practice within an immersive virtual reality (VR) environment improves performance in a physical environment. Increased user motivation is one possible advantage of practicing in VR. One recent study showed that an enriched gaming environment led to higher levels of engagement, resulting in a direct learning benefit. The purpose of this study was to compare the intrinsic motivation, engagement, and transfer of learning between VR practice and physical practice of the same motor skill. Participants ( n = 61) were randomly assigned to a physical ( n = 30) or a VR practice group ( n = 31) in which they performed a golf putting task. Analyses showed VR practice led to a significantly greater increase in average intrinsic motivation inventory score than physical practice. Analyses for performance showed there was a significant ( p < .001) improvement in accuracy (i.e., radial error) from pre- to posttest, but the two groups did not differ. Overall, these results partially support our hypotheses suggesting that VR practice led to a greater increase in motivation compared with physical practice. Additionally, these results suggest that VR practice was similarly effective at improving accuracy compared with physical practice. Future research directions are discussed.
先前的研究表明,在沉浸式虚拟现实(VR)环境中练习可以提高在物理环境中的表现。增强用户的动机可能是在VR中练习的一个好处。最近的一项研究表明,丰富的游戏环境会提高玩家的参与度,从而产生直接的学习效益。本研究的目的是比较虚拟现实练习和相同运动技能的物理练习之间的内在动机、参与和学习转移。参与者(n = 61)被随机分配到物理组(n = 30)或虚拟现实练习组(n = 31),其中他们执行高尔夫推杆任务。分析表明,虚拟现实练习导致的平均内在动机量表得分显著高于物理练习。性能分析显示有显著的(p <.001)准确性(即径向误差)从测试前到测试后的改善,但两组没有差异。总的来说,这些结果部分支持了我们的假设,即虚拟现实练习比物理练习更能提高动机。此外,这些结果表明,与物理练习相比,VR练习在提高准确性方面同样有效。展望了未来的研究方向。
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引用次数: 0
A Single Session of Mindfulness Meditation Expedites Immediate Motor Memory Consolidation to Improve Wakeful Offline Learning 单次正念冥想加速即时运动记忆巩固,以改善清醒时的离线学习
Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-04-01 DOI: 10.1123/jmld.2022-0016
James O. Brown, Alex Chatburn, David L. Wright, Maarten A. Immink
Posttraining meditation has been shown to promote wakeful memory stabilization of explicit motor sequence information in learners who are experienced meditators. We investigated the effect of single-session mindfulness meditation on wakeful and sleep-dependent forms of implicit motor memory consolidation in meditation naïve adults. Immediately after training with a target implicit motor sequence, participants ( N = 20, eight females, 23.9 ± 3.3 years) completed either a 10-min mindfulness meditation ( N = 10) or a control listening task before exposure to task interference induced by training with a novel implicit sequence. Target sequence performance was tested following 5-hr wakeful and 15-hr postsleep periods. Bayesian inference was applied to group comparisons of mean reaction time (RT) changes across training, interference, wakeful, and postsleep timepoints. Relative to control conditions, posttraining meditation reduced RT slowing between target sequence training and interference sequence introduction (BF 10 [Bayes factors] = 6.61) and supported RT performance gains over the wakeful period (BF 10 = 8.34). No group differences in postsleep RT performance were evident (BF 10 = 0.38). These findings illustrate that posttraining mindfulness meditation expedites wakeful, but not sleep-dependent, offline learning with implicit motor sequences. Previous meditation experience is not required to obtain wakeful consolidation gains from posttraining mindfulness meditation.
训练后冥想已被证明可以促进有经验的学习者清醒记忆中显性运动序列信息的稳定。我们调查了单次正念冥想对冥想naïve成人中清醒和睡眠依赖形式的内隐运动记忆巩固的影响。在目标内隐动作序列训练后,参与者(N = 20, 8名女性,23.9±3.3岁)立即完成10分钟正念冥想(N = 10)或对照听力任务,然后暴露于新内隐序列训练引起的任务干扰中。在5小时清醒期和15小时睡眠后测试靶序列表现。贝叶斯推理应用于各组在训练、干扰、清醒和睡眠后时间点的平均反应时间(RT)变化的比较。与对照组相比,训练后冥想减少了目标序列训练和干扰序列引入之间的RT慢化(BF 10[贝叶斯因子]= 6.61),并支持清醒期间RT性能的提高(BF 10 = 8.34)。各组睡眠后RT表现无显著差异(BF 10 = 0.38)。这些发现表明,训练后的正念冥想加速了清醒时的离线学习,而不是依赖于睡眠的内隐运动序列。从训练后的正念冥想中获得清醒巩固收益并不需要先前的冥想经验。
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引用次数: 0
Age Differences in a Combined Walking and Grasping Task 行走和抓握联合任务的年龄差异
Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2023-0032
Andrea H. Mason, Alejandra S. Padilla, Kristen A. Pickett
Previous studies have identified patterns of coordinated control when adults combine gait and grasping. What remains unclear is whether the coordination of these two tasks differs between adolescent and adult groups. Groups of adults and adolescents were asked to walk across an instrumented gait mat in three conditions: walk forward, walk and grasp a small target, and walk and grasp a large target. Spatiotemporal measures of gait/gait variability and grasp/grasp variability were quantified. Both adolescents and young adults exhibited decreased velocity, decreased step-extremity ratio, and increased percent of gait cycle spent in double support when grasping compared to walking alone. The major influence of grasping was seen during the final step before grasp in both groups. Change scores between walk forward and walk and grasp conditions were larger for adolescents. Furthermore, spatiotemporal measures of gait and grasping were more variable in adolescents. These results suggest that superimposing grasp onto gait is more challenging for adolescents than young adults. The challenges associated with combining these two tasks is particularly evident in the last step prior to object contact and suggests that the increased planning and execution demands required to perform these coordinated skills affects adolescents to a greater extent than young adults.
先前的研究已经确定了成年人结合步态和抓取时的协调控制模式。目前尚不清楚的是,这两项任务的协调在青少年和成人群体之间是否有所不同。一组成年人和青少年被要求在三种情况下走过一个装有仪器的步态垫:向前走,走路并抓住一个小目标,走路并抓住一个大目标。对步态/步态变异性和抓取/抓取变异性的时空测量进行量化。与单独行走相比,青少年和年轻人在抓握时都表现出速度下降,步-肢比减少,双支撑时的步态周期百分比增加。在两组中,抓握的主要影响出现在抓握前的最后一步。向前行走和行走和抓握条件的变化得分在青少年中较大。此外,步态和抓取的时空测量在青少年中变化更大。这些结果表明,对青少年来说,将抓握叠加到步态上比年轻人更具挑战性。结合这两项任务的挑战在接触物体之前的最后一步尤为明显,这表明,执行这些协调技能所需的更多计划和执行要求对青少年的影响比年轻人更大。
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引用次数: 0
Virtual Reality for Action Observation Does Not Enhance Motor Learning of a Complex Weightlifting Task 动作观察的虚拟现实不能增强复杂举重任务的运动学习
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2022-0069
Michael A. Weise, J. A. Vicente, Belle P. Ponce de Leon, Makena Savola, Kimberly Hernandez, Sean P. Flanagan, J. Hinkel-Lipsker
Action observation, where a learner observes a model demonstrating a skill, has long been established in the literature as an effective means to acquire motor skills. Developments in virtual reality technology have made it possible for a 3D action observation viewing perspective, theoretically providing a viewing experience similar to observing a live performer. However, very little work has compared these two media and their effects on motor learning outcomes. In this current study, healthy novice participants to Olympic lifting (specifically the clean and jerk; n = 36) learned the exercise through observing a model demonstration in virtual reality (3D group) or on a computer screen (2D group). A third group (control) did not engage in action observation. Results indicate that following training, the 2D group more frequently used a three-step lifting pattern, and the 2D and 3D groups lifted with a significantly greater horizontal displacement compared with the control group. Also, the 2D group was more likely to use a proximal-to-distal joint coordination strategy during the second pull of the exercise. These results further the idea that only small parts of pertinent visual information are needed for action observation, and that virtual reality may provide too much information to novice learners.
动作观察,即学习者观察一个示范技能的模型,在文献中早就被确立为获得运动技能的有效手段。虚拟现实技术的发展使得3D动作观察视角成为可能,理论上提供了类似于观察现场表演者的观看体验。然而,很少有研究比较这两种媒体及其对运动学习结果的影响。在本研究中,健康新手参加奥运会举重(特别是挺举;n = 36)通过观看虚拟现实(3D组)或电脑屏幕上的模型演示(2D组)来学习练习。第三组(对照组)没有进行动作观察。结果表明,训练后,2D组更频繁地使用三步举模式,2D组和3D组的水平位移明显大于对照组。此外,2D组更有可能在第二次拉伸时使用近端到远端关节协调策略。这些结果进一步表明,动作观察只需要一小部分相关的视觉信息,而虚拟现实可能为新手学习者提供了太多的信息。
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引用次数: 0
Associations of Monitor-Independent Movement Summary and Health-Related Fitness With Gross Motor Skills in Young Children 幼儿大肌肉运动技能与监测独立运动总结和健康相关健身的关系
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2022-0073
R. Burns, You Fu, Yang Bai, W. Byun
The purpose of this study was to determine the associations of device-based assessments of physical activity (PA) and health-related fitness (HRF) with gross motor skills (GMS) in preschool-aged children. Participants were 3- to 5-year-old children (N = 316; 49.6% female) who participated in the 2012 National Youth Fitness Survey. GMS was assessed using the gross motor quotient calculated from the Test for Gross Motor Development—Second Edition. PA was assessed using wrist-worn ActiGraph GT3X accelerometers with raw triaxial acceleration data summarized using monitor-independent movement summary units (MIMS). Analyzed metrics included average MIMS per day and peak 30-min MIMS. HRF assessment consisted of a plank score and a sum of skinfold assessment. Weighted hierarchical regressions tested the associations between PA, HRF, and GMS variables with a secondary weighted mediation analysis that examined whether HRF mediated the association between PA and GMS. Peak 30-min MIMS significantly correlated with GMS (b = 0.17, p = .005). Plank scores had the strongest correlation with GMS (b = 0.23, p = .004), and weighted mediation analyses revealed that plank scores partially mediated the association between peak 30-min MIMS and GMS (indirect effect = 0.03, p = .01, 23.1% mediation). Peak 30-min MIMS significantly associated with GMS in preschool children, an association partially mediated by core muscular endurance.
本研究的目的是确定基于设备的身体活动(PA)和健康相关健身(HRF)评估与学龄前儿童大肌肉运动技能(GMS)的关联。参与者为3- 5岁的儿童(N = 316;49.6%女性),参加了2012年全国青少年健康调查。使用大肌肉运动发展测试第二版计算的大肌肉运动商来评估GMS。使用腕戴式ActiGraph GT3X加速度计评估PA,使用独立于监测器的运动汇总单元(MIMS)汇总原始三轴加速度数据。分析的指标包括每天的平均MIMS和峰值30分钟的MIMS。HRF评估包括平板支撑评分和皮褶评估之和。加权层次回归检验了PA、HRF和GMS变量之间的关联,并进行了二次加权中介分析,以检验HRF是否介导了PA和GMS之间的关联。峰值30min MIMS与GMS显著相关(b = 0.17, p = 0.005)。平板支撑评分与GMS的相关性最强(b = 0.23, p = 0.004),加权中介分析显示,平板支撑评分部分介导了30分钟MIMS峰值与GMS之间的关联(间接效应= 0.03,p = 0.004)。01, 23.1%调解)。学龄前儿童的峰值30分钟MIMS与GMS显著相关,这种关联部分由核心肌肉耐力介导。
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引用次数: 0
Prefrontal Cortex Activity in Siblings With and Without Developmental Coordination Disorder: An Exploratory Study 有或没有发育性协调障碍的兄弟姐妹的前额叶皮层活动:一项探索性研究
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2021-0065
Mandy S. Plumb, Megan Charity, Kimberly Milla, B. Bodt, N. Getchell
Background: Previous research suggests that children with or at risk of probable developmental coordination disorder (pDCD) activate different areas of the brain when performing certain motor skills compared with typically developing (TD) children. This study used functional near-infrared spectroscopy to compare prefrontal cortex (PFC) activity in TD and pDCD during the completion of manual (three-dimensional [3D]) and computerized versions (two-dimensional) of the Tower of Hanoi (ToH) puzzle. Method: A total of 12 children (TD and pDCD; one female/11 male, , SD ± 1.52 years) performed the two-dimensional and 3D conditions of the ToH disk tasks, with equivalent executive function but different motor requirements, with functional near-infrared spectroscopy to compare PFC activity. Results: Interestingly, brain oxygenation levels were more apparent in the 3D versus two-dimensional ToH. In the 3D, there were large differences between pairs of discordant sibling sets and this was located to the right medial PFC, with pDCD exhibiting less activation in this region. Conclusion: While only exploratory, we have identified potential differences in the right medial PFC region, which differs within sibling sets with different pDCD status. These results concur with previous studies and are an area that needs to be explored further with a larger cohort of TD and pDCD.
背景:先前的研究表明,与正常发育(TD)儿童相比,患有或有可能患有发育协调障碍(pDCD)的儿童在执行某些运动技能时激活的大脑区域不同。本研究使用功能性近红外光谱比较了在完成手工(三维[3D])和计算机版本(二维)的河内塔(ToH)拼图时,TD和pDCD的前额叶皮质(PFC)活动。方法:共12例患儿(TD和pDCD;1名女性/11名男性,SD±1.52岁)执行二维和三维条件下的ToH磁盘任务,执行功能相同,但运动要求不同,用功能近红外光谱比较PFC活动。结果:有趣的是,脑氧合水平在3D比二维ToH更明显。在3D中,不一致的兄弟姐妹组之间存在很大差异,这位于右侧内侧PFC, pDCD在该区域表现出较少的激活。结论:虽然只是探索性的,但我们已经确定了右侧内侧PFC区域的潜在差异,不同pDCD状态的兄弟姐妹之间存在差异。这些结果与先前的研究结果一致,这是一个需要在更大的TD和pDCD队列中进一步探索的领域。
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引用次数: 0
The Influence of Isokinetic Trunk Flexor and Extensor Strength on Dynamic Balance in Children 等速躯干屈伸肌力对儿童动态平衡的影响
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2022-0078
S. Eustace, M. Wdowski, J. Tallis, Michael Duncan
This study assessed whether trunk flexor and extensor strength were predictors of time to stability (TTS) and center of pressure (CoP) during hop and hold tasks in children. Seventeen boys (age, 10.1 ± 1.6 years; height, 1.45 ± 0.11 m; mass, 26.7 ± 7.83 kg) undertook isokinetic strength assessments of concentric and eccentric trunk flexors/extensors at 60°/s, and anterior/medial hop tasks. Hierarchical multiple regressions determined whether concentric and eccentric trunk flexor/extensor peak torques predict TTS using a composite score (CompX CompY CompZ) and CoPX and CoPY. Concentric trunk flexors were the strongest predictor for TTS CompXY, with concentric flexion and eccentric extension predicting TTS CompY. All muscle actions were also strong predictors for CoPY during hop tasks. These findings have implications for the assessment of trunk musculature strength and measures of postural control within a young healthy population. The development of trunk musculature strength may aid improvements in dynamic balance tasks in children, with implications for fall and injury risk. To improve trunk musculature strength and the potential to maintain postural control, a combination of concentric and eccentric exercises with other training modalities appears relevant due to the increased relevance to the demands of balance maintenance.
本研究评估了躯干屈肌和伸肌强度是否能预测儿童在跳跃和保持任务中的稳定时间(TTS)和压力中心(CoP)。男孩17例(年龄10.1±1.6岁);高度:1.45±0.11 m;Mass, 26.7±7.83 kg)以60°/s的速度进行同心和偏心躯干屈/伸肌的等速强度评估,以及前/内侧跳跃任务。分层多元回归确定同心和偏心躯干屈/伸峰值扭矩是否预测TTS使用复合评分(CompX CompY CompZ)和CoPX和CoPY。同心躯干屈肌是TTS CompXY的最强预测因子,同心屈肌和偏心伸肌是TTS CompXY的预测因子。在跳跃任务中,所有肌肉动作也都是CoPY的有力预测因子。这些发现对年轻健康人群的躯干肌肉力量评估和姿势控制措施具有启示意义。躯干肌肉力量的发展可能有助于改善儿童的动态平衡任务,这意味着跌倒和受伤的风险。为了提高躯干肌肉力量和保持姿势控制的潜力,同心和偏心练习与其他训练方式的结合似乎是相关的,因为与平衡维持的需求增加有关。
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引用次数: 1
The Effect of Gender Stereotype Threat and Conceptions of Ability on Motor Learning and Working Memory 性别刻板印象威胁和能力观念对运动学习和工作记忆的影响
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2022-0047
Narges Nahidi, E. Saemi, M. Doustan, Joshua Aronson, Raphaël Laurin
The present study explored the effects of gender stereotype threat and conceptions of ability on motor learning and working memory in novice female learners. Sixty participants (Mage = 21.92 years, SDage = 1.74) were randomly assigned into a gender stereotype threat and a control group (neutral; without stereotype threat). Each group was, in turn, randomly divided into two subgroups: inherent ability and acquired skill. The tasks assigned to the participants included soccer dribbling and the n-back test. In the pretest, the individuals only performed one dribbling trial, whereas in the practice phase, the individuals performed 12 blocks of five trials based on their respective test conditions. During retention and transfer under pressure (48 hr after practice for both tests), the participants carried out one block of five trials. The participants also completed the n-back test in the pretest, posttest, and retention phases. In both motor performance and learning, the findings suggested that both gender stereotype threat and inherent ability variables can negatively influence the soccer dribbling skill (p < .05). However, regarding working memory, the results could not show any significant difference between the groups (p > .05). How these variables affect or do not affect motor learning as well as working memory and how the results are applied in the motor domain are discussed.
本研究探讨了性别刻板印象威胁和能力观念对女性初学者运动学习和工作记忆的影响。60名参与者(年龄21.92岁,年龄1.74岁)被随机分配到性别刻板印象威胁组和对照组(中性组;没有刻板印象威胁)。每一组依次被随机分成两个小组:先天能力组和后天技能组。分配给参与者的任务包括足球运球和n-back测试。在前测阶段,个体只进行一次运球试验,而在练习阶段,个体根据各自的测试条件进行了5次试验中的12次。在压力下保持和转移期间(两项测试练习后48小时),参与者进行了五组试验中的一组。参与者还在前测、后测和记忆保留阶段完成了n-back测试。在运动表现和学习两方面,性别刻板印象威胁和内在能力变量均对足球运球技术产生负向影响(p . 0.05)。讨论了这些变量如何影响或不影响运动学习以及工作记忆,以及如何将结果应用于运动领域。
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引用次数: 0
On the Reproducibility of Power Analyses in Motor Behavior Research 论动力分析在运动行为研究中的可重复性
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2022-0061
B. McKay, Mariane F. B. Bacelar, Michael J. Carter
Recent metascience suggests that motor behavior research may be underpowered, on average. Researchers can perform a priori power analyses to ensure adequately powered studies. However, there are common pitfalls that can result in underestimating the required sample size for a given design and effect size of interest. Critical evaluation of power analyses requires successful analysis reproduction, which is conditional on the reporting of sufficient information. Here, we attempted to reproduce every power analysis reported in articles (k = 84/635) in three motor behavior journals between January 2019 and June 2021. We reproduced 7% of analyses using the reported information, which increased to 43% when we assumed plausible values for missing parameters. Among studies that reported sufficient information to evaluate, 63% reported using the same statistical test in the power analysis as in the study itself, and in 77%, the test addressed at least one of the identified hypotheses. Overall, power analyses were not commonly reported with sufficient information to ensure reproducibility. A nontrivial number of power analyses were also affected by common pitfalls. There is substantial opportunity to address the issue of underpowered research in motor behavior by increasing adoption of power analyses and ensuring reproducible reporting practices.
最近的元科学表明,平均而言,运动行为研究可能缺乏动力。研究人员可以进行先验的功率分析,以确保充分的功率研究。然而,存在一些常见的缺陷,可能导致低估给定设计和效应大小所需的样本量。功率分析的关键评估需要成功的分析再现,这是有条件的报告足够的信息。在这里,我们试图重现2019年1月至2021年6月期间三份运动行为期刊上的文章(k = 84/635)中报告的所有功率分析。我们使用报告的信息再现了7%的分析,当我们假设缺失参数的合理值时,这一比例增加到43%。在报告了足够信息进行评估的研究中,63%的研究报告在功效分析中使用了与研究本身相同的统计检验,77%的研究报告使用了至少一个已确定的假设。总的来说,功率分析通常没有足够的信息来确保可重复性。大量的功率分析也受到常见缺陷的影响。通过越来越多地采用功率分析和确保可重复的报告实践,有大量的机会来解决动力不足的问题。
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引用次数: 3
The Körperkoordinations Test Für Kinder for Iranian Youth: Factor Structure, Measurement Invariance, and Covariates 伊朗青年的Körperkoordinations检验<e:1> r Kinder:因素结构、测量不变性和协变量
IF 1.3 Q4 PSYCHOLOGY, DEVELOPMENTAL Pub Date : 2023-01-01 DOI: 10.1123/jmld.2021-0060
S. Salami, Paulo Felipe Ribeiro Bandeira, Clarice M. L. Martins, L. Hardy, A. Shams, P. S. Dehkordi
Purpose: To examine the factor structure and measurement invariance of the Körperkoordinations Test Für Kinder (KTK) and covariates of motor competence in a sample of Iranian children aged 5–14 years. Methods: Participants were children aged 5–14 years (N = 432, 61% boys). Age, sex, and body mass index were collected. Confirmatory factor analysis (CFA) was conducted to investigate the factorial structure of KTK and multigroup CFA carried out to test measurement invariance across sexes and age groups. In addition, we calculated a model with covariates to identify the association between KTK items with age, sex, and body mass index z score. Results: CFA supported the construct validity of a one-factor model with an appropriate fit indices that the four subtests loaded on the same factor namely motor competence. Furthermore, according to the magnitude of changes in root mean square error of approximation and comparative fit index between nested models, the assumption of KTK measurement invariance across age-groups and sex were valid. Finally, adequate fit indices were found for the multigroup CFA path model of KTK with the covariates sex, age, and body mass index z score. Conclusion: The KTK is a valid, reliable, and valuable instrument for assessing motor competence of Iranian children and adolescents.
目的:探讨伊朗5 ~ 14岁儿童运动能力Körperkoordinations KTK测试(KTK)及协变量的因素结构和测量不变性。方法:参与者为5-14岁的儿童(N = 432, 61%为男孩)。收集年龄、性别和体重指数。采用验证性因子分析(Confirmatory factor analysis, CFA)研究KTK的因子结构,采用多组验证性因子分析(multigroup CFA)检验不同性别和年龄组的测量不变性。此外,我们计算了一个带有协变量的模型,以确定KTK项目与年龄、性别和身体质量指数z分数之间的关联。结果:CFA支持单因素模型的结构效度,四个子测试对同一因素即运动能力具有适当的拟合指标。此外,根据嵌套模型间近似均方根误差和比较拟合指数的变化幅度,KTK测量在不同年龄组和性别之间的不变性假设成立。最后,以性别、年龄和体重指数z分为协变量,建立了KTK的多组CFA路径模型,找到了足够的拟合指标。结论:KTK是评估伊朗儿童和青少年运动能力的有效、可靠和有价值的工具。
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引用次数: 0
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Journal of Motor Learning and Development
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