Impact of handedness on electromyographic activity of hand muscles and nerve conduction velocity during mobile phone use in adolescents

Authors

  • Karim Sami Elsaharty Faculty of Physical Therapy, Modern University for Technology and Information, Cairo, Egypt. https://orcid.org/0000-0002-8256-8163
  • Shaimaa Mohamed Hamed Elmarakby Faculty of Physical Therapy, Modern University for Technology and Information, Cairo, Egypt.
  • Nevein Nabil Alagamy Department of Physical Therapy for Internal Medicine and Geriatrics, Faculty of Physical Therapy, Horus University, Egypt.
  • Maha G. Ibrahim Department of Physical Therapy for Basic Sciences, Faculty of Physical Therapy, Modern University for Technology and Information, Cairo, Egypt.
  • Nehad Mohamed Abdelnabi Mousa Faculty of Physical Therapy, Horus University, Egypt.
  • Rana Nabil Hussien Faculty of Physical Therapy, Modern University for Technology and Information, Cairo, Egypt.
DOI: https://doi.org/10.6018/sportk.637271
Keywords: Handedness, Electromyographic Activity, Nerve Conduction Velocity, Smartphone Use, Muscle Activation

Abstract

This study investigated the impact of handedness on electromyographic (EMG) activity of hand muscles and nerve conduction velocity during smartphone use and compared the effects of left- and right-handedness on hand muscle activation and nerve conduction velocities. This interventional parallel study included 70 participants (35 left-handed, 35 right-handed) aged 12 to 14 years. EMG activity and nerve conduction velocities (radial, median, and ulnar nerves) were measured before and after 10 minutes of smartphone use. Muscle activation was assessed for the abductor pollicis longus (APL), extensor carpi radialis (ECR), flexor carpi ulnaris (FCU), and first dorsal interosseous muscles. Statistical analysis was performed using SPSS software, version 27. Left-handed participants exhibited significantly greater activation in all assessed muscles during smartphone use (p < 0.05). Specifically, the activation of the APL, ECR, FCU, and first dorsal interosseous muscles was higher in left-handed individuals. Sensory ulnar and median nerve conduction velocities were significantly higher in right-handed subjects during smartphone use (p < 0.05), while no significant differences were observed in motor nerve conduction velocities. The study demonstrates that handedness influences neuromuscular activity during smartphone use, with left-handed individuals showing greater muscle activation and right-handed individuals exhibiting higher sensory nerve conduction velocities.

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Published
11-11-2024
How to Cite
Sami Elsaharty, K., Hamed Elmarakby, S. M., Nabil Alagamy, N., Ibrahim, M. G., Abdelnabi Mousa, N. M., & Hussien, R. N. (2024). Impact of handedness on electromyographic activity of hand muscles and nerve conduction velocity during mobile phone use in adolescents. SPORT TK-EuroAmerican Journal of Sport Sciences, 13, 54. https://doi.org/10.6018/sportk.637271
Issue
Vol. 13 (2024)
Section
Articles

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The works and papers that are published in this Journal are subject to the following terms:

1. The Publication Service of the University of Murcia (the publisher) has the Publication Rights (Copyright) to the published papers and works, and favors and permits the reusing of the same under the license indicated in point 2.

© Servicio de Publicaciones, Universidad de Murcia, 2013

2. The papers and works are to be published in the digital edition of the Journal under the license Creative Commons Reconocimiento-No Comercial-Sin Obra Derivada 3.0 España (legal text). The copying, using, spreading, transmitting and publicly displaying of the papers, works or publication are permitted as long as: i) the authors and original sources (Journal, publisher and URL of the publication) are quoted; ii) it is not used for commercial benefit; iii) the existence and specifications of this users license are mentioned.

3. Conditions of Self-Archiving. It is permitted and encouraged that the authors spread electronically the pre-print (before printing) and/or post-print (the revised, evaluated and accepted) versions of their papers or works before their publication since this favors their circulation and early diffusion and therefore can help increase their citation and quotation, and also there reach through the academic community.