A Comparison of Two Different Wrist Immobilization Methods

Muscle Activation Of The Upper Trapezius During Computer Typing Task: A Comparison of Two Different Wrist Immobilization Methods

The aim of this study is to examine the effect of the splint and rigid taping on the muscle activation of the upper trapezius muscle during computer typing tasks in office workers.

The study will be conducted on 10 healthy office workers. The study subjects will be asked to type on a computer for 5 minutes (1) without splint or taping, (2) with a splint and (3) with rigid taping which limits the wrist flexion at the dominant side. The upper trapezius muscle activation will be recorded by surface EMG during the task. The mean values will be normalized according to Maximum Voluntary Isometric Contraction (MVIC) and %MVIC values.

Study Overview

• Status: Unknown
• Conditions: Work-Related Condition
• Intervention / Treatment: Other: Wrist Splint; Other: Rigid Taping

• Study Type: Interventional
• Enrollment (Anticipated): 10
• Phase: Not Applicable

Contacts and Locations

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years to 35 years (Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

Description

Inclusion Criteria:

• Being an office worker between 20-35 years of age
• Using a computer for at least 4 hours a day
• Working full time for at least 1 year without any upper extremity pathology

Exclusion Criteria:

• Having a body mass index of 30 kg / m2 or more on the day of evaluation
• Using muscle relaxants 72 hours before the evaluation
• Exercising within the last 48 hours

Study Plan

How is the study designed?

Design Details

• Primary Purpose: Screening
• Allocation: Non-Randomized
• Interventional Model: Parallel Assignment
• Masking: Single

Number of Arms

3

Arms and Interventions

Participant Group / Arm	Intervention / Treatment
No Intervention: Control Group; The subjects will be asked to type on a computer for 5 minutes without splint or taping. The upper trapezius muscle activation will be recorded by surface EMG during the task. The mean values will be normalized according to Maximum Voluntary Isometric Contraction (MVIC) and %MVIC values.
Experimental: Splint Group; The subjects will be asked to type on a computer for 5 minutes with a splint. The upper trapezius muscle activation will be recorded by surface EMG during the task. The mean values will be normalized according to Maximum Voluntary Isometric Contraction (MVIC) and %MVIC values.	Other: Wrist Splint; Neutral position and volar supported wrist orthosis which limits the flexion and deviation while allowing pronation, supination, and extension of the wrist.
Experimental: Rigid Taping Group; The subjects will be asked to type on a computer for 5 minutes with rigid taping which limits the wrist flexion at the dominant side. The upper trapezius muscle activation will be recorded by surface EMG during the task. The mean values will be normalized according to Maximum Voluntary Isometric Contraction (MVIC) and %MVIC values.	Other: Rigid Taping; Rigid taping in the neutral position will be performed to allow pronation, supination, and extension of the wrist while limiting the flexion and deviation.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Measurement of Muscle Activation for Control Group	Surface Electromyography (sEMG) device will be used for measurement of muscle activation. The electrodes going to be placed according to the SENIAM criteria(1). First, the MVIC will be performed by each individual in the manual muscle testing position. 6 seconds MVIC will be measured with 3 repetitions and a 3-minute rest period going to be given. The highest value of the three measurements will be recorded as MVIC. The computer task consists of typing 300-word text for 5 minutes. Individuals will be instructed about the typing task and to be seated comfortably and as close to screen as possible. The 5-minute typing task will be performed without orthosis or taping. The upper trapezius muscle activation will be recorded with the sEMG. The number of words participants wrote will be noted. To prevent muscle fatigue, a resting period of 5 minutes will be given. The mean values (mV) during the writing task with sEMG will be normalized according to MVIC and %MVIC values will be determined.	It will be recorded at baseline for MVIC and 1 minute after baseline while performing the 5-minute typing task on computer for %MVIC
Measurement of Muscle Activation for Splint Group	Surface Electromyography (sEMG) device will be used for measurement of muscle activation. The electrodes going to be placed according to the SENIAM criteria(1). First, the MVIC will be performed by each individual in the manual muscle testing position. 6 seconds MVIC will be measured with 3 repetitions and a 3-minute rest period going to be given. The highest value of the three measurements will be recorded as MVIC. The computer task consists of typing 300-word text for 5 minutes. Individuals will be instructed about the typing task and to be seated comfortably and as close to screen as possible. The 5-minute typing task will be performed with orthosis. The upper trapezius muscle activation will be recorded with the sEMG. The number of words participants wrote will be noted. To prevent muscle fatigue, a resting period of 5 minutes will be given. The mean values (mV) during the writing task with sEMG will be normalized according to MVIC and %MVIC values will be determined.	It will be recorded at baseline for MVIC and 1 minute after baseline while performing the 5-minute typing task on computer for %MVIC
Measurement of Muscle Activation for Rigid Taping Group	Surface Electromyography (sEMG) device will be used for measurement of muscle activation. The electrodes going to be placed according to the SENIAM criteria(1). First, the MVIC will be performed by each individual in the manual muscle testing position. 6 seconds MVIC will be measured with 3 repetitions and a 3-minute rest period going to be given. The highest value of the three measurements will be recorded as MVIC. The computer task consists of typing 300-word text for 5 minutes. Individuals will be instructed about the typing task and to be seated comfortably and as close to screen as possible. The 5-minute typing task will be performed with rigid taping. The upper trapezius muscle activation will be recorded with the sEMG. The number of words participants wrote will be noted. To prevent muscle fatigue, a resting period of 5 minutes will be given. The mean values (mV) during the writing task with sEMG will be normalized according to MVIC and %MVIC values will be determined.	It will be recorded at baseline for MVIC and 10 minutes after baseline while performing the 5-minute typing task on computer for %MVIC

Collaborators and Investigators

• Sponsor: Trakya University

Publications and helpful links

General Publications

• Hermens HJ, Freriks B, Disselhorst-Klug C, Rau G. Development of recommendations for SEMG sensors and sensor placement procedures. J Electromyogr Kinesiol. 2000 Oct;10(5):361-74. doi: 10.1016/s1050-6411(00)00027-4.

Study record dates

Study Major Dates

• Study Start (Anticipated): January 10, 2020
• Primary Completion (Anticipated): February 1, 2020
• Study Completion (Anticipated): February 15, 2020

Study Registration Dates

• First Submitted: December 23, 2019
• First Submitted That Met QC Criteria: December 27, 2019
• First Posted (Actual): December 30, 2019

Study Record Updates

• Last Update Posted (Actual): December 30, 2019
• Last Update Submitted That Met QC Criteria: December 27, 2019
• Last Verified: December 1, 2019

More Information

Terms related to this study

• Other Study ID Numbers: 31.10.2019/113

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: No

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No