Wrist InjuriesNCT06978426
Hand-Held Dynamometer Assessment: E-Sports Grip-Asymmetry Index as a Predictor of Wrist Pain
An observational study of Wrist Injuries, run by Ahram Canadian University at 1 site in Egypt.
Trial summary
This cross-sectional study investigates whether a simple Grip-Asymmetry Index (GAI) can predict self-reported wrist pain in professional e-sports athletes. Professional gamers (aged 18-30) who play at least 35 hours per week will be assessed using a Jamar dynamometer to measure maximal grip force in both hands. Read more about this study
- Who is it for?
- Ages 18 to 30 yearsHealthy volunteers can take part
- Conditions the study is for
- Wrist Injuries
- What is being tested?
- Pain Group and No-Pain Group
- How many people
- 56 participants
- Where
- 1 siteEgypt
- Study dates
- 1 Jun 2025to 1 Dec 2025
- Phase
- Observational
- Are there results?
- Not yet: the study is under way
Key requirements
Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.
- Ages 18 to 30 years
- All sexes
- Healthy volunteers accepted
- Adult
Study population: Professional e-sports athletes between 18-30 years old who compete in organized video gaming competitions and receive compensation for their gaming activities. Participants will be recruited from professional e-sports teams, gaming organizations, and competitive gaming events in the region. The study population will include individuals who play competitive video games for at least 35 hours per week using standard computer peripherals (mouse and keyboard). Both male and female athletes will be eligible, and efforts will be made to recruit a representative sample across different gaming genres (FPS, MOBA, RTS, etc.) and competitive levels.
Who may be able to join
- Professional e-sports athletes (receiving compensation for gaming activities)
- Age between 18 and 30 years
- Gaming for at least 35 hours per week
- For Pain Group: Reports wrist pain rated ≥3/10 on VAS during gaming activities
- For No-Pain Group: Reports minimal to no wrist pain (<3/10 on VAS) during gaming activities
Who cannot join
- History of neurologic disease
- History of rheumatic disease
- Previous wrist surgery
- Recent wrist trauma (within 3 months)
- Use of pain medication within 24 hours of assessment
- Inability to perform grip strength testing
Trial locations and contacts
1 site in 1 country. Contact the study team or a site near you to ask about taking part.
Egypt1 site, 1 recruiting
- Recruiting
Outpatient clinic of faculty of physical therapy, Ahram Canadian University
Al Ḩayy Ath Thāmin, Giza Governorate, 3221405
Mohamed M ElMeligie, Ph.d, 01064442032, mohamed.elmeligie@acu.edu.eg
About this study
Official title: Evaluation of Grip Strength Asymmetry Index in Professional E-Sports Athletes as a Predictive Measure for Wrist Pain
This cross-sectional study investigates whether a simple Grip-Asymmetry Index (GAI) can predict self-reported wrist pain in professional e-sports athletes. Professional gamers (aged 18-30) who play at least 35 hours per week will be assessed using a Jamar dynamometer to measure maximal grip force in both hands. The study will compare GAI between two groups: those with wrist pain (≥3/10 on Visual Analog Scale during play) and those without pain. A GAI cutoff value for predicting wrist pain risk will be established through ROC analysis, with additional factors such as gaming hours, BMI, and sex incorporated into a multivariable logistic regression model.
- Conditions
- Wrist Injuries
- Being tested
- Pain Group, No-Pain Group
- Medical subject headings
- Wrist Injuries
What participants receive
What participants receive. In a randomised study each person is assigned to one group by chance.
Pain GroupOther
Professional e-sports athletes who report wrist pain rated at 3 or higher on a 10-point Visual Analog Scale during gaming activities. These participants play video games professionally for at least 35 hours per week, are between 18-30 years old, and have no history of neurologic or rheumatic disease.
No-Pain GroupOther
Professional e-sports athletes who report minimal to no wrist pain (less than 3 on a 10-point Visual Analog Scale) during gaming activities. These participants play video games professionally for at least 35 hours per week, are between 18-30 years old, and have no history of neurologic or rheumatic disease.
| Study group | Role | What they receive |
|---|---|---|
| Pain Group | Professional e-sports athletes reporting wrist pain ≥3/10 on VAS during play Receives: Other: Pain Group | |
| No-Pain Group | Professional e-sports athletes reporting minimal to no wrist pain (<3/10 on VAS during play) Receives: Other: No-Pain Group |
What is being measured
The primary outcome is the main question the study is designed to answer.
Grip-Asymmetry Index (GAI)
The Grip-Asymmetry Index is calculated as (Dominant hand grip strength - Non-dominant hand grip strength) / Dominant hand grip strength × 100%. Grip strength is measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols. Higher GAI values indicate greater asymmetry between dominant and non-dominant hands.
Measured: Measured once at study enrollment
Secondary outcomes (4)
Maximal grip force in dominant hand
Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols
Measured: Measured once at study enrollment
Maximal grip force in non-dominant hand
Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols
Measured: Measured once at study enrollment
Wrist pain intensity during gaming
Self-reported wrist pain measured using a Visual Analog Scale (VAS) ranging from 0 (no pain) to 10 (worst pain imaginable) during typical gaming sessions
Measured: Assessed at study enrollment, reflecting current pain experience during gaming activities
Weekly gaming hours
Self-reported average number of hours spent gaming per week
Measured: Assessed at study enrollment, reflecting average from the past month
Timeline
From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.
- First posted18 May 2025
- Study start1 Jun 2025 (estimated)
- Primary completion1 Dec 2025 (estimated)
- Study completion1 Dec 2025 (estimated)
Resources
- Official record on ClinicalTrials.govThe registry entry this page is built from, with its full change history.
- Other trials for Wrist InjuriesStudies of the same condition, open and under way.
- What the trial phases meanHow a treatment moves from first tests in people to approval.
More details
For doctors and researchers: how the study is designed, who runs it, and its registry IDs.
Study design
- Study type
- Observational
- Observational model
- Other
- Time perspective
- Cross-sectional
- Enrolment
- 56 participants (estimated)
Sponsor and investigators
- Lead sponsor
- Ahram Canadian University
- Sponsor type
- University, hospital or other
- Responsible party
- Principal investigator, Mohamed Magdy ElMeligie, Ahram Canadian University
IDs, dates and publications
- ClinicalTrials.gov ID
- NCT06978426
- Sponsor's protocol ID
- AlHayah-1001
- Status last verified
- May 2025
- First submitted
- 10 May 2025
- Last updated
- 18 May 2025
- Results posted
- No
- FDA-regulated drug
- No
- FDA-regulated device
- No
- Individual data sharing
- No
Study at a glance
From the registry record, last updated by the sponsor on 18 May 2025. Recruitment status is as the sponsor reported it: confirm with the study team.
- Official title
- Evaluation of Grip Strength Asymmetry Index in Professional E-Sports Athletes as a Predictive Measure for Wrist Pain
- ClinicalTrials.gov ID
- NCT06978426
- Acronym / sponsor ID
- AlHayah-1001
- Conditions
- Wrist Injuries
- Study type
- Observational
- Recruitment status
- Recruiting
- Enrolment
- 56 participants (estimated)
- Lead sponsor
- Ahram Canadian UniversityUniversity, hospital or other
- Study start
- 1 Jun 2025 (estimated)
- Primary completion
- 1 Dec 2025 (estimated)
- Study completion
- 1 Dec 2025 (estimated)
- First posted
- 18 May 2025 (actual)
- Results
- Not posted in the source record
Clinical summary
The research question as the sponsor registered it. This describes what the study plans to test, not what it found.
This cross-sectional study investigates whether a simple Grip-Asymmetry Index (GAI) can predict self-reported wrist pain in professional e-sports athletes. Professional gamers (aged 18-30) who play at least 35 hours per week will be assessed using a Jamar dynamometer to measure maximal grip force in both hands. The study will compare GAI between two groups: those with wrist pain (≥3/10 on Visual Analog Scale during play) and those without pain. A GAI cutoff value for predicting wrist pain risk will be established through ROC analysis, with additional factors such as gaming hours, BMI, and sex incorporated into a multivariable logistic regression model.
Study design
- Observational model
- Other
- Time perspective
- Cross-sectional
- Number of arms
- 2
| Arm | Type | Receives |
|---|---|---|
| Pain Group | – | Other: Pain GroupProfessional e-sports athletes reporting wrist pain ≥3/10 on VAS during play |
| No-Pain Group | – | Other: No-Pain GroupProfessional e-sports athletes reporting minimal to no wrist pain (<3/10 on VAS during play) |
Who may qualify
- Ages
- 18 to 30 years
- Sex
- All
- Healthy volunteers
- Accepted
- Age groups
- Adult
- Study population
- Professional e-sports athletes between 18-30 years old who compete in organized video gaming competitions and receive compensation for their gaming activities. Participants will be recruited from professional e-sports teams, gaming organizations, and competitive gaming events in the region. The study population will include individuals who play competitive video games for at least 35 hours per week using standard computer peripherals (mouse and keyboard). Both male and female athletes will be eligible, and efforts will be made to recruit a representative sample across different gaming genres (FPS, MOBA, RTS, etc.) and competitive levels.
Key inclusion criteria (5 listed)
- Professional e-sports athletes (receiving compensation for gaming activities)
- Age between 18 and 30 years
- Gaming for at least 35 hours per week
- For Pain Group: Reports wrist pain rated ≥3/10 on VAS during gaming activities
- For No-Pain Group: Reports minimal to no wrist pain (<3/10 on VAS) during gaming activities
Key exclusion criteria (6 listed)
- History of neurologic disease
- History of rheumatic disease
- Previous wrist surgery
- Recent wrist trauma (within 3 months)
- Use of pain medication within 24 hours of assessment
Eligibility is decided by the study team after screening; this overview does not establish that a patient qualifies. Full inclusion and exclusion criteria.
Interventions
| Intervention | Type | Arms |
|---|---|---|
| Pain GroupProfessional e-sports athletes who report wrist pain rated at 3 or higher on a 10-point Visual Analog Scale during gaming activities. These participants play video games professionally for at least 35 hours per week, are between 18-30 years old, and have no history of neurologic or rheumatic disease. | Other | Pain Group |
| No-Pain GroupProfessional e-sports athletes who report minimal to no wrist pain (less than 3 on a 10-point Visual Analog Scale) during gaming activities. These participants play video games professionally for at least 35 hours per week, are between 18-30 years old, and have no history of neurologic or rheumatic disease. | Other | No-Pain Group |
Primary outcome
Grip-Asymmetry Index (GAI)
Time frame: Measured once at study enrollment
The Grip-Asymmetry Index is calculated as (Dominant hand grip strength - Non-dominant hand grip strength) / Dominant hand grip strength × 100%. Grip strength is measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols. Higher GAI values indicate greater asymmetry between dominant and non-dominant hands.
4 secondary outcomes
Maximal grip force in dominant hand
Time frame: Measured once at study enrollment
Maximal grip force in non-dominant hand
Time frame: Measured once at study enrollment
Wrist pain intensity during gaming
Time frame: Assessed at study enrollment, reflecting current pain experience during gaming activities
Weekly gaming hours
Time frame: Assessed at study enrollment, reflecting average from the past month
Results and safety
This study is still under way. Results are not available in the source record yet.
Research links
- Official record on ClinicalTrials.govLast updated by the sponsor 18 May 2025.
- Individual participant dataSharing planned: No
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Referral and contact
AzTrials does not enrol participants or take referrals. Contact the study team or a site listed below; they decide who can take part.
1 site in 1 country: see every site and its status.
Questions about this trial
What is this clinical trial studying?
An observational study of Wrist Injuries, run by Ahram Canadian University at 1 site in Egypt.
The full registered description is in the About this study section and the official record.
Who may be eligible to take part?
The sponsor lists 5 inclusion and 6 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.
Is this clinical trial currently recruiting?
The record says: looking for participants now, as of the sponsor's last update on 18 May 2025. Status can change between updates, so confirm with the study contact before making plans.
Where is the study taking place?
The record lists 1 site in Egypt. Whether a site is taking part right now should be confirmed with that site. See every site.
What are the possible benefits and risks?
They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.
Are results available for this study?
This study is still under way. Results are not available in the source record yet.
How can a doctor refer a patient or contact the research team?
Contact Mohamed M ElMeligie, Ph.D (01159880001, mohamed.elmeligie@acu.edu.eg), or a site near the patient. AzTrials does not enrol participants or take referrals.
What does the primary outcome measure?
Grip-Asymmetry Index (GAI) (time frame: Measured once at study enrollment). It is what the study was designed to measure, not a finding.
Where can I read the original study information?
Does a listing mean the treatment is approved or proven to work?
No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.
How often is this information updated?
AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 18 May 2025.