School of Health Sciences, University of South Australia, Adelaide, SA, Australia.
Dev Med Child Neurol. 2013 Sep;55(9):827-33. doi: 10.1111/dmcn.12181. Epub 2013 Jun 13.
The aim of this study was to determine the reliability, validity, and optimal placement of pedometers in children with cerebral palsy (CP) who ambulate without aids.
Seventeen participants aged 7 to 17 years with CP (eight males, nine females; mean age 12y 4mo; SD 3y 2mo), who could ambulate without aids, wore four New Lifestyles pedometers (NL-1000) on an elasticized waist belt. Fourteen participants had hemiplegia, two diplegia, and one triplegia; all were classified in Gross Motor Function Classification System (GMFCS) level I (n=8) or II (n=9). Participants completed 3-minute walking and running trials around an indoor course and were videotaped to verify the actual number of steps taken during each trial. Inter-pedometer reliability was determined by comparing pedometer readings using intraclass correlation coefficients (ICCs). Validity was determined by comparing pedometer step counts with video step counts using ICC, t-tests, and Bland-Altman plots. Optimal pedometer placement was determined using Wilcoxon signed-rank tests to compare the percentage error for pedometers positioned on the dominant and non-dominant hips.
Excellent reliability (ICC 0.88-0.99) and validity (ICC 0.78-0.95) were demonstrated with no significant difference between the video step counts and pedometer step counts. There was no significant difference between the step counts recorded by pedometers on the dominant and non-dominant hips.
This study showed that NL-1000 pedometers have a high degree of reliability and validity in ambulant children with CP in controlled conditions.
本研究旨在确定在无需辅助器具即可行走的脑瘫（CP）儿童中，计步器的可靠性、有效性和最佳放置位置。
17 名 7 至 17 岁的 CP 儿童（8 名男性，9 名女性；平均年龄 12 岁 4 个月；SD 3 岁 2 个月），无需辅助器具即可行走，在弹性腰带上佩戴 4 个新生命计步器（NL-1000）。14 名参与者患有偏瘫，2 名患有双瘫，1 名患有三肢瘫；所有参与者均被分类为粗大运动功能分级系统（GMFCS）I 级（n=8）或 II 级（n=9）。参与者在室内赛道上完成 3 分钟的步行和跑步试验，并进行录像以验证每次试验中实际的步数。通过使用组内相关系数（ICC）比较计步器读数，确定计步器之间的可靠性。通过使用 ICC、t 检验和 Bland-Altman 图比较计步器的步数与视频的步数，确定有效性。通过使用 Wilcoxon 符号秩检验，比较放置在优势和非优势臀部的计步器的百分比误差，确定最佳计步器位置。
在受控条件下，计步器具有优异的可靠性（ICC 0.88-0.99）和有效性（ICC 0.78-0.95），视频计数和计步器计数之间没有显著差异。优势和非优势臀部上记录的计步器计数之间没有显著差异。
本研究表明，在控制条件下，NL-1000 计步器在脑瘫可自主行走的儿童中具有高度的可靠性和有效性。
