Department of Rehabilitation Sciences, The Hong Kong Polytechnic University, Hung Hom, Kowloon, Hong Kong.
Res Dev Disabil. 2012 Nov-Dec;33(6):1898-904. doi: 10.1016/j.ridd.2012.05.015. Epub 2012 Jun 23.
This study aimed (1) to compare the skeletal maturity and activity participation pattern between children with and without developmental coordination disorder (DCD); and (2) to determine whether activity participation pattern was associated with the skeletal development among children with DCD.
Thirty-three children with DCD (mean age: 7.76 years) and 30 typically developing children (mean age: 7.60 years) were recruited. Skeletal maturity was assessed with the Sunlight BonAge system. Motor ability was evaluated by the Movement assessment battery for Children-2 (MABC-2). Participation patterns were evaluated using the Children Assessment of Participation and Enjoyment assessment. Analysis of variance was used to compare the outcome variables between the two groups. Multiple regression analysis was performed to examine the relationship between skeletal development, motor performance and activity participation intensity in children with DCD.
The DCD group had significantly delayed skeletal development, lower MABC-2 derived scores, and participated less intensely in various types of physical activities than their typically developing peers. After accounting for the effects of age and sex, activity participation intensity score remained significantly associated with delay in skeletal development, explaining 28.0% of the variance (F(change1, 29)=11.341, p=0.002).
Skeletal development is delayed in pre-pubertal children with DCD. Limited activity participation intensity appears to be one of the contributing factors.
本研究旨在：(1)比较发育性协调障碍（DCD）儿童与无 DCD 儿童的骨骼成熟度和活动参与模式；(2)确定活动参与模式是否与 DCD 儿童的骨骼发育有关。
招募了 33 名患有 DCD（平均年龄：7.76 岁）的儿童和 30 名发育正常的儿童（平均年龄：7.60 岁）。骨骼成熟度采用阳光 BonAge 系统评估。运动能力采用儿童运动评估电池-2（MABC-2）进行评估。采用儿童参与和享受评估量表评估参与模式。采用方差分析比较两组间的结果变量。采用多元回归分析检验 DCD 儿童骨骼发育、运动表现与活动参与强度之间的关系。
DCD 组的骨骼发育明显延迟，MABC-2 评分较低，与同龄人相比，各种类型的体力活动参与强度较低。在考虑年龄和性别影响后，活动参与强度评分仍与骨骼发育延迟显著相关，解释了 28.0%的方差（F(change1, 29)=11.341，p=0.002）。
发育前 DCD 儿童的骨骼发育延迟。活动参与强度有限似乎是一个促成因素。
