Introduction

The aim of this study was to examine the impact of different mobile phone tasks on gait behaviour in healthy young adults.

Methods

An experimental design was used in this study. Twenty-five participants, 7 males and 18 females, aged 22.56 ± 2.45 years completed 5 tasks whilst walking. The conditions consisted of no task, calling, playing a game, listening to music, texting, and watching a video. Gait behaviour was captured using a Zebris Force Distribution Measurement (FDM) system, and 6 trials were recorded under each condition. Temporo-spatial gait variables included step length, step time, stride length, stride time, step width, cadence, velocity, foot rotation angle, % stance phase, % loading response, % single support time, % pre-swing, % swing phase, and % double support time. In addition, the level of confidence during walking was assessed using an 11 point scale.

Results

Repeated measure ANOVAs with post hoc pairwise comparisons revealed that mobile phone usage altered all temporo-spatial variables significantly (p < 0.05), except for foot rotation angle. Texting and watching a video were the most notable changes, with listening to music showing no difference when compared to no task.

Conclusion

Mobile phone usage modified gait behaviour to such a degree that it may compromise safety by dividing an individual's attention, with the lowest level of confidence being while watching video and texting. Although the potential danger of the use of mobile phones while walking is being discussed worldwide, a clear policy still does not exist, and individuals using mobile phones, in particular for watching video and texting while walking, should be made more aware of the risk of injury.

中文翻译：

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不同手机任务对健康年轻人步态行为的影响

介绍

这项研究的目的是检查健康的成年人中不同手机任务对步态行为的影响。

方法

在这项研究中使用了实验设计。25位参与者，男7位，女18位，年龄22.56±2.45岁，步行时完成了5项任务。条件包括没有任务，打电话，玩游戏，听音乐，发短信和观看视频。使用Zebris力分布测量（FDM）系统捕获步态行为，并在每种情况下记录6次试验。时空步态变量包括步长，步长，步幅长度，步幅时间，步幅，步频，速度，脚旋转角度，％姿态姿态，％负载响应，％单支撑时间，％摆动前，％摆动相和％的支持时间。此外，步行时的自信心水平使用11分制进行评估。

结果

重复测量的方差分析与事后成对比较显示，手机的使用会显着改变所有时空变量（p <0.05），除了脚旋转角度。发短信和观看视频是最明显的变化，听音乐与没有任务相比没有什么区别。

结论

移动电话的使用将步态行为改变到一定程度，以至于可能通过分散个人的注意力而损害安全性，最低的置信度是在观看视频和发短信时。尽管全球范围内都在讨论步行时使用手机的潜在危险，但仍不存在明确的政策，使用手机的人，尤其是在步行时观看视频和发短信的个人，应更加注意以下风险：受伤。