Shriners Hospitals for Children Salt Lake City, Salt Lake City, UT 84103, USA.
Hum Mov Sci. 2012 Feb;31(1):247-54. doi: 10.1016/j.humov.2011.05.004. Epub 2011 Sep 8.
The purpose of this study was to (1) extend the research findings of decreased muscular force production in grip strength to the lower extremity strength of children with NF1 and (2) to determine if there was a relationship between isometric strength and functional activities in children with NF1. Force production was assessed using a hand held dynamometer (HHD) and a functional task (hopping and jumping) on a force plate. Data from twenty-six children with NF1 were compared to data from 48 typically developing children of similar sex, weight and height. Children with NF1 demonstrated statistically significant lower force production with HHD (p<0.01) during hip extension, but similar force production for knee extension and ankle plantar flexion compared to the control group. A relationship existed between the ground reaction forces at take-off from both hopping and jumping and the force generated from knee extensor strength in the NF1 group. The addition of a functional task to hand held dynamometry is useful for determining a relationship between common clinical measures and functional activities.
(1) 将握力中肌肉力量下降的研究结果扩展到 NF1 患儿的下肢力量；(2) 确定 NF1 患儿的等长力量与功能活动之间是否存在关系。使用手持测力计 (HHD) 和力板上的功能任务 (跳跃) 评估力量产生。将 26 名 NF1 患儿的数据与 48 名性别、体重和身高相似的典型发育儿童的数据进行比较。与对照组相比，NF1 患儿在髋关节伸展时的 HHD 力量产生明显较低（p<0.01），但在膝关节伸展和踝关节跖屈时的力量产生相似。NF1 组从跳跃中起跳的地面反作用力与膝关节伸肌力量产生之间存在关系。在手握测力计中添加功能任务对于确定常见临床测量值与功能活动之间的关系很有用。
