Dominant Non-Dominant Upper Extremity in Gender

Dominant and Non-Dominant Upper Extremity in Young Individuals

There are strength and functional differences between non-dominant and dominant extremities. This is important in the hand and extremity rehabilitation process. This situation also differs between genders. Comparison of the dominant and non-dominant limb can provide important clinical or rehabilitation field-related information. It is reported in the literature that manual dexterity, grip strength and joint position sense may differ between extremities. However, the relationship between this situation and the difference between genders has not been explained. It is thought that examining this difference can be extremely useful in determining achievable goals in hand rehabilitation and in customizing care for different groups.

Study Overview

• Status: Recruiting
• Conditions: Upper Extremity Problem; Gender Issues

Detailed Description

Many treatment protocols compare the strength of the injured extremity to the uninjured extremity or compare it to normative data from the same group of individuals. There is controversy about the difference in grip strength between dominant and non-dominant hands in left- and right-hand dominant individuals. There is no study in the literature that evaluates the differences in muscle strength, joint position sense and upper extremity function skills between dominant and non-dominant upper extremities between genders. It is very important to include bilateral activity training in rehabilitation programs that aim to improve upper extremity mobility and speed. In addition, it will contribute to the accurate evaluation of activity and participation limitations, the determination of priorities, the selection of the right activity in task-specific and target-oriented treatment approaches, and the achievement of more effective results when integrated with technology-supported approaches. Therefore, the aim of our study is to fill this gap in the literature by comparing the differences between dominant and non-dominant upper extremities between genders.

• Study Type: Observational
• Enrollment (Estimated): 210

Contacts and Locations

• Study Contact: Name: Metehan Yana, PhD; Phone Number: +90 370 418 9089; Email: metehanyana@karabuk.edu.tr

Study Locations

• Turkey
  • Karabük, Turkey, 78000
    • Recruiting
    • Karabuk University
    • Contact: Metehan YANA Phd; Phone Number: 05072665522; Email: metehanyana@karabuk.edu.tr

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: Adult
• Accepts Healthy Volunteers: Yes

• Sampling Method: Non-Probability Sample

Study Population

Healthy young adult individuals will be included in the study.

Description

Inclusion Criteria:

1. Being between the ages of 18-25
2. Volunteering to participate in the study

Exclusion Criteria:

1. Having trauma (fracture, dislocation) in the last year
2. Doing sports or activities that require bilateral activity (playing music, knitting, sports, etc.)
3. Being diagnosed with any neurological or orthopedic disease that will affect hand-eye coordination
4. Having had upper extremity surgery
5. Having any Botox injection in the last 6 months
6. Those who did not agree to participate in the study

Study Plan

How is the study designed?

Number of groups / cohorts

2

Cohorts and Interventions

Group / Cohort
Male; Hand preference was evaluated with the Edinburgh Hand Preference Questionnaire, grip muscle strength with the Jamar dynamometer, dexterity with the Purdue Pegboard Test, and proprioception as joint position sense with the inclinometer.
Female; Hand preference was evaluated with the Edinburgh Hand Preference Questionnaire, grip muscle strength with the Jamar dynamometer, dexterity with the Purdue Pegboard Test, and proprioception as joint position sense with the inclinometer.

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
Hand Preference	The Edinburgh Hand Preference Questionnaire questions individuals' hand use in daily living activities. The final total score is between 100 and -100. Individuals who score more than 40 points are right-hand; Individuals in this score range from 40 to -40 inclusive are recorded as ambidextrous, and individuals with scores of -40 points and below are left-handed	First Day
Grip Strength	Hand grip strength was measured using a standard Jamar Dynamometer.	First Day
Joint Position Sense	Proprioception was assessed by joint position sense (JPS) test. Shoulder JPS was assessed using a digital inclinometer	First Day
Manual Dexterity	The Purdue Pegboard Test was used to evaluate the functional skill levels of the upper extremities.	First Day

Collaborators and Investigators

• Sponsor: Karabuk University

Publications and helpful links

General Publications

• Bhat AK, Jindal R, Acharya AM. The influence of ethnic differences based on upper limb anthropometry on grip and pinch strength. J Clin Orthop Trauma. 2021 Jul 15;21:101504. doi: 10.1016/j.jcot.2021.101504. eCollection 2021 Oct.
• Amo-Setien FJ, Leal-Costa C, Abajas-Bustillo R, Gonzalez-Lamuno D, Redondo-Figuero C; EXERNET Research Group. Factors associated with grip strength among adolescents: An observational study. J Hand Ther. 2020 Jan-Mar;33(1):96-102. doi: 10.1016/j.jht.2018.10.005. Epub 2018 Nov 30.
• Dag F, Erdogan AT. Gender and age differences in absolute and relative handgrip strength of the Turkish population aged 8-27 years. Hand Surg Rehabil. 2020 Dec;39(6):556-563. doi: 10.1016/j.hansur.2020.06.005. Epub 2020 Aug 18.

Study record dates

Study Major Dates

• Study Start (Actual): November 7, 2023
• Primary Completion (Estimated): March 15, 2024
• Study Completion (Estimated): March 30, 2024

Study Registration Dates

• First Submitted: February 13, 2024
• First Submitted That Met QC Criteria: February 13, 2024
• First Posted (Actual): February 21, 2024

Study Record Updates

• Last Update Posted (Actual): March 12, 2024
• Last Update Submitted That Met QC Criteria: March 9, 2024
• Last Verified: March 1, 2024

More Information

Terms related to this study

• Other Study ID Numbers: Karabuk-001

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