Effect of Use Smartphone in Forward Head Position and Neutral Position on Upper Limbs Nerves

• Conditions: Mobile Phone Use
• Interventions: Device: smartphone

• Registration Number: NCT04647799
• Lead Sponsor: MTI University

Brief Summary

To compare between two different positions (forward head position and neutral position) when using mobile phone by hand using nerve conduction velocity and F-wave of upper limb nerves ( ulnar, median and radial) in 4 different times.

Detailed Description

PURPOSE:

* To compare between forward head position and hand use of mobile phone on conduction velocity of upper limb nerves

* To investigate the F responses of upper limbs nerves.

* To investigate the compound muscle action potential (CMAP) amplitudes of median nerves

BACKGROUND:

Forward head position may affect the cervical nerve root so it can also affect nerve conduction velocity due to continues stretch on nerves, also the over use of smart phone by hand may be affected the hand nerves, so this study determine which one of them has more influence than the other.

If the forward head position has the worst effect on the upper limb nerves investigators must avoid the incorrect position of the head to avoid stretch and compression of the nerves.

HYPOTHESES:

There are no statistical difference between forward head position and hand use of mobile phone on conduction velocity of the nerves of upper limb.

SUBJECTS:

Normal one hundred fifty non-athketic adolescents of both genders will participate in this study. Their age ranges from 14-18 years.

METHODS FOR ASSESSMENT

1. Electromyography (EMG) will be used to measure nerve conduction velocity, F-wave, motor action potential

2. Soft collar will used to fixed the craniovertebral angle during used mobile phone Universal goniometer

3. Goniometer pro iPhone application

Study Timeline

• Study Start: 2020-02-10
• Study First Submitted: 2020-09-14
• Status Verified: 2020-11
• Study First Submitted QC: 2020-11-20
• Last Update Submitted: 2020-11-20
• Study First Posted: 2020-12-01
• Last Update Posted: 2020-12-01
• Primary Completion: 2021-02-10
• Study Completion: 2021-03-10

Recruitment & Eligibility

• Status: UNKNOWN
• Sex: All
• Target Recruitment: 150

Inclusion Criteria

1. Their ages range from 14-18 years.
2. Not rolled on any regular athletic activity

Exclusion Criteria

1. Individual with neck pain
2. Congenital deformity for upper limb
3. Peripheral neuropathy due to diabetes mellitus type I
4. Rheumatoid arthritis
5. History of surgical intervention at nerves of the upper extremity

Study & Design

• Study Type: OBSERVATIONAL
• Study Design: Not specified

Arm && Interventions

Group	Intervention	Description
forward head position	smartphone	nerve conduction velocity and f-wave applied to median , ulnar and radial nerve before and after 10,20 and 30 minutes in forward head position while Children will sit on chair with their feet on the ground without any tension, the upper limbs are rested in a table then, the angle between the line passing horizontally from the spinous process of C7 and the line passing between the tragus and spinous process of C7 will be measured by goniometer and goniometer pro application to evaluate the craniovertebral angle recording, we will fix the craniovertebral angle between 40.7° and 43.2°(severe FHP )
neutral position	smartphone	nerve conduction velocity and f-wave applied to median , ulnar and radial nerve before and after 10,20 and 30 minutes while Children will sit on chair with their feet on the ground with head in anatomical position, the upper are rested in a table and used both hand on touch screen of mobile phone

Primary Outcome Measures

Name	Time	Method
motor and sensory nerve conduction velocity and f-wave in neutral position	1 day	motor and sensory nerve conduction velocity and f-wave will measured to nerves of upper extremities ( median, ulnar and radial nerves) in neutral position by using electrodiagnosis when using mobile phone

Secondary Outcome Measures

Name	Time	Method
motor and sensory nerve conduction velocity and f-wave measured in forward head position during use mobile phone	1 day	motor and sensory nerve conduction velocity and f-wave will measured to nerves of upper extremities ( median, ulnar and radial nerves) in forward head position by using electrodiagnosis when using mobile phone

Trial Locations

Locations (1)

Faculty of Pysical Therapy, 6 Oct University; 🇪🇬 Cairo, Egypt