Influence of staring at mobile phone on static balance, plantar pressure gait characteristics and lower limb joints in young men

doi:10.3969/j.issn.2095-4344.2017.28.005

Abstract

Abstract:

BACKGROUND: Smartphones are a double-edged sword, which not only bring convenience, but also result in excessive reliance. Especially the youth often gaze at their phones when standing or walking, which may affect their static standing balance and plantar pressure gait characteristics.
OBJECTIVE: To investigate the influence of staring at mobile phones when standing or walking on the static balance, plantar pressure and gait characteristics in young men, thus informing its negative effect on gait characteristics and lower limb joints.
METHODS: Twenty health young men were selected, the plantar pressure when normal standing and walking was measured using Loran plantar pressure analysis system (NO. MPS, Italy). After 20 minutes of rest, the same measurement was performed in all participants staring at mobile for 10 minutes during standing or walking. The relative indexes were compared between two conditions after data collection.
RESULTS AND CONCLUSION: When young men staring at mobile phone for 20 seconds during standing, the fluctuation speed, displacement and track area were significantly larger than those during normal standing (P < 0.05); moreover, the contact area, pressure peak and average pressure of the first and second metatarsus in plantar area were significantly larger than those during normal standing (P < 0.05), while the parameters of heel lateral area were significantly lower than those during normal standing (P < 0.05). The stride and speed when staring at mobile phone during walking were significantly smaller than those during normal walking (P < 0.05); the support time of two feet and angle between feet were significantly larger than those during normal walking; the contact area, pressure peak and average pressure of the 4th and 5th metatarsus in plantar area and heel lateral area were significantly larger than those during normal walking. These results suggest that the gravity is less stable and more anterior when young men staring at mobile phone during standing than during normal standing. Staring at mobile phone during walking can alter the gait characteristics, resulting in longer support time, shorter stride, slower step speed, larger walking angle and higher lateral plantar pressure.

中国组织工程研究杂志出版内容重点：组织构建；骨细胞；软骨细胞；细胞培养；成纤维细胞；血管内皮细胞；骨质疏松；组织工程

Key words: Gait, Pressure, Fixation, Ocular, Tissue Engineering

CLC Number:

R318

Jin Zong-xue, He Hui, Ruan Bin, Guo Hui, Xiong Kai-yu. Influence of staring at mobile phone on static balance, plantar pressure gait characteristics and lower limb joints in young men[J]. Chinese Journal of Tissue Engineering Research, 2017, 21(28): 4454-4461.

Figures/Tables 5

总之，男性青年凝视于手机站立20 s过程中，足底重心轨迹的波动速度、位移以及轨迹面积明显大于正常站立时，并且足底区域中的M1和M2区域的接触面积、压力峰值以及平均压强的大小也明显大于正常站立时，而HL区域的参数明显低于正常站立时。 2.3 男性青年行走过程中时空参数和各区域参数情况 2.3.1 男性青年行走过程中步态周期中时间参数情况由表6可知，男性青年在行走过程，凝视于手机的左脚支撑所用时间非常明显高于正常组(P < 0.01)，凝视于手机的右脚支撑所用时间非常明显高于正常行走(P < 0.01)，凝视于手机的双脚同时支撑所用时间明显高于正常行走(P < 0.05)。 2.3.2 男性青年行走过程中的步态周期中空间参数情况由表7可知，男性青年在行走过程中，凝视于手机时左右脚步长均明显短于正常行走(P < 0.01)，凝视于手机的左右脚的夹角均明显大于正常组行走(P < 0.01)。 2.3.3 男性青年行走的足底压力区域参数情况由表8可知，男性青年行走过程中，凝视于手机时左右侧足底M4、M5和LH的接触面积明显大于正常行走时(P < 0.05)，其他区域的接触面积与正常行走时差异无显著性意义。由表9可知，男性青年行走过程中，凝视于手机时左右侧足底M4、M5和LH的压力峰值明显大于正常行走时(P < 0.05)，其他区域的接触面积与正常行走时差异无显著性意义。由表10可知，男性青年行走过程中，凝视于手机的左侧足底M3、M4和LH的平均压强明显大于正常行走时(P < 0.05)；右侧足底T2-5、M3、M4和LH的平均压强明显高于正常行走时(P < 0.05)，其他区域的接触面积与正常行走时差异无显著性意义。由表11可知，男性青年行走过程中，凝视于手机时右侧足底LH的压强峰值明显大于正常行走时(P < 0.05)，其他区域的接触面积与正常行走时差异无显著性意义。总之，男性青年凝视于手机行走过程中行走步长和步速明显小于正常行走，双脚支撑的时间和左右脚行走的夹角明显大于正常行走，足底区域中的M4、M5和LH的接触面积、压力峰值以及平均压强大小明显大于正常行走时。"

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