Nooijen Carla Fj, de Groot Janke F, Stam Henk J, van den Berg-Emons Rita Jg, Bussmann Hans Bj
Department of Rehabilitation Medicine, Erasmus MC University Medical Center Rotterdam, P.O. Box 2040 , 3000 , CA, Rotterdam, The Netherlands.
Research Group Lifestyle and Health, HU University of Applied Sciences, Utrecht, the Netherlands.
J Neuroeng Rehabil. 2015 Feb 6;12:11. doi: 10.1186/s12984-015-0004-x.
Children who are wheelchair-dependent are at risk for developing unfavorable physical behavior; therefore, assessment, monitoring and efforts to improve physical behavior should start early in life. VitaMove is an accelerometer-based activity monitor and can be used to detect and distinguish different categories of physical behavior, including activities performed in a wheelchair and activities using the legs. The purpose of this study was to assess the validity of the VitaMove activity monitor to quantify physical behavior in children who are partly or completely wheelchair-dependent.
Twelve children with spina bifida (SB) or cerebral palsy (CP) (mean age, 14 ± 4 years) performed a series of wheelchair activities (wheelchair protocol) and, if possible, activities using their legs (n = 5, leg protocol). Activities were performed at their own home or school. In children who were completely wheelchair-dependent, VitaMove monitoring consisted of one accelerometer-based recorder attached to the sternum and one to each wrist. For children who were partly ambulatory, an additional recorder was attached to each thigh. Using video-recordings as a reference, primary the total duration of active behavior, including wheeled activity and leg activity, and secondary agreement, sensitivity and specificity scores were determined.
Detection of active behaviour with the VitaMove activity monitor showed absolute percentage errors of 6% for the wheelchair protocol and 10% for the leg protocol. For the wheelchair protocol, the mean agreement was 84%, sensitivity was 80% and specificity was 85%. For the leg protocol, the mean agreement was 83%, sensitivity was 78% and specificity was 90%. Validity scores were lower in severely affected children with CP.
The VitaMove activity monitor is a valid device to quantify physical behavior in children who are partly or completely wheelchair-dependent, except for severely affected children and for bicycling.
依赖轮椅的儿童有出现不良身体行为的风险；因此，对身体行为的评估、监测及改善措施应在儿童早期就开始。VitaMove是一款基于加速度计的活动监测器，可用于检测和区分不同类型的身体行为，包括在轮椅上进行的活动以及使用腿部进行的活动。本研究的目的是评估VitaMove活动监测器在量化部分或完全依赖轮椅的儿童身体行为方面的有效性。
12名患有脊柱裂（SB）或脑瘫（CP）的儿童（平均年龄14±4岁）进行了一系列轮椅活动（轮椅方案），如果可能，还进行了腿部活动（n = 5，腿部方案）。活动在他们自己的家中或学校进行。对于完全依赖轮椅的儿童，VitaMove监测包括一个基于加速度计的记录器附着在胸骨上，另一个附着在每个手腕上。对于部分可行走的儿童，每个大腿上还额外附着一个记录器。以视频记录作为参考，主要确定包括轮式活动和腿部活动在内的活跃行为的总持续时间，以及次要的一致性、敏感性和特异性得分。
使用VitaMove活动监测器检测活跃行为时，轮椅方案的绝对百分比误差为6%，腿部方案为10%。对于轮椅方案，平均一致性为84%，敏感性为80%，特异性为85%。对于腿部方案，平均一致性为83%，敏感性为78%，特异性为90%。在严重受影响的CP儿童中，有效性得分较低。
VitaMove活动监测器是一种有效的设备，可用于量化部分或完全依赖轮椅的儿童的身体行为，但严重受影响的儿童和骑自行车的情况除外。
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