Sport Sciences - Performance and Technology, Department of Health Science and Technology, Aalborg University, Aalborg, Denmark.
University of Grenoble Alpes, AGEIS, Grenoble, France.
Sci Rep. 2021 Jan 13;11(1):1237. doi: 10.1038/s41598-020-79584-5.
Walking while using a mobile phone has been shown to affect the walking dynamics of young adults. However, this has only been investigated using treadmill walking at a fixed walking speed. In this study, the dynamics of over ground walking were investigated using lower trunk acceleration measured over 12 consecutive trials, following differing walking speed and mobile phone use instructions. Higher walking speed significantly increased the proportion of acceleration along the vertical measurement axis, while decreasing the proportion of acceleration along the anteroposterior axis (p < 0.001). Moreover, higher walking speed also resulted in increased sample entropy along all measurement axes (p < 0.05). When walking while texting, the maximum Lyapunov exponent increased along the anteroposterior and vertical measurement axes (p < 0.05), while sample entropy decreased significantly along the vertical axis (p < 0.001). Walking speed and mobile phone use both affect the walking dynamics of young adults. Walking while texting appears to produce a reduction in local dynamic stability and an increase in regularity, however, caution is required when interpreting the extent of this task effect, since walking speed also affected walking dynamics.
使用移动电话时行走已被证明会影响年轻人的行走动态。然而，这仅在使用跑步机以固定行走速度行走时进行了研究。在这项研究中，通过在 12 次连续试验中测量下躯干加速度，研究了在不同行走速度和手机使用说明下的地面行走动态。较高的行走速度显著增加了沿垂直测量轴的加速度比例，而沿前后轴的加速度比例降低（p < 0.001）。此外，较高的行走速度还导致所有测量轴上的样本熵增加（p < 0.05）。当边发短信边行走时，最大 Lyapunov 指数沿前后轴和垂直测量轴增加（p < 0.05），而沿垂直轴的样本熵显著降低（p < 0.001）。行走速度和使用手机都会影响年轻人的行走动态。边发短信边行走似乎会降低局部动态稳定性并增加规律性，但是，在解释这种任务影响的程度时需要谨慎，因为行走速度也会影响行走动态。
