Hand-Held Dynamometer Assessment: E-Sports Grip-Asymmetry Index as a Predictor of Wrist Pain
ConditionWrist Injuries
Trial statusRecruiting
Trial phaseNot listed
Trial typeObservational
Biological sexAll
Age18-30
SponsorAhram Canadian University
About this trial
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.
Eligibility criteria
This trial accepts healthy volunteersQualifiers
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
Disqualifiers
History of neurologic disease
History of rheumatic disease
Previous wrist surgery
Recent wrist trauma (within 3 months)
Trial 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.
Trial design
Design model
Other
Time perspective
Cross-sectional
Treatments tested in this trial
Pain Group
Other interventionProfessional 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 Group
Other interventionProfessional 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.
Treatment groups
56 Participants
are divided into 2 treatment groupsGroup A: Pain Group1 intervention
Group B: No-Pain Group1 intervention
Trial outcomes
Primary outcomes
1
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.
Time frame
Measured once at study enrollmentSecondary outcomes
1
Maximal grip force in dominant hand
Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols
Time frame
Measured once at study enrollment2
Maximal grip force in non-dominant hand
Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols
Time frame
Measured once at study enrollment3
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
Time frame
Assessed at study enrollment, reflecting current pain experience during gaming activities4
Weekly gaming hours
Self-reported average number of hours spent gaming per week
Time frame
Assessed at study enrollment, reflecting average from the past monthLocations
1Map coordinates are unavailable for these locations. Locations are shown below instead.
Outpatient clinic of faculty of physical therapy, Ahram Canadian UniversityRecruiting3221405, Al Ḩayy Ath Thāmin, Giza Governorate
Egypt
EgyptSponsors and contacts
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Source ClinicalTrials.gov