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KMID : 1139220210170020138
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Journal of Exercise Rehabilitation
2021 Volume.17 No. 2 p.138 ~ p.144
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The effect of the use of smartphone while walking on the electromyography activity of the lower extremity in young students
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Lee Dae-Hee
Jeon Hye-Joo
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Abstract
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The study aims to determine the effects of smartphone use on the muscle activity of the lower extremity when walking. Twenty-three healthy young students were asked to perform a 10-m walk test between normal walking without using a smartphone and walking while two-handed texting on a smartphone. The electromyography activities of the lower extremity were quantified. To quantitatively assess the cervical flexion range of smartphone users, the cervical flexion angle was measured using a digital goniometer. The study results indicated that the use of a smartphone while walking could lessen muscle activity on the tibialis anterior, gastrocnemius, rectus femoris, gluteus maximus, and gluteus medius than that of normal walking without using a smartphone. The walking speeds were reduced in walking while using a smartphone compared with normal walking without using a smartphone. The cervical flexion angle was greater when walking while using a smartphone compared to that of normal walking without using a smartphone. These results suggest that frequently using a smartphone while walking could be a potential risk for musculoskeletal problems.
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KEYWORD
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Electromyography, Muscle activity, Walking, Smartphone, Lower extremity
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