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NCT Number: NCT06978426

Hand-Held Dynamometer Assessment: E-Sports Grip-Asymmetry Index as a Predictor of 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.

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Key information

Conditions

Wrist Injuries Arm Injuries Wounds and Injuries

Age range

18 year–30 year

Sex eligibility

All sexes

Study type

Observational

Primary location

Outpatient clinic of faculty of physical therapy, Ahram Canadian University

Al Ḩayy Ath Thāmin, Giza Governorate, 3221405, Egypt

Location status: Recruiting

Location contact

Mohamed M ElMeligie, Ph.d

CONTACT

[email protected]

01064442032

Who can participate

Healthy volunteers accepted: Yes

Only the study team can determine whether someone qualifies for participation.

Inclusion criteria

  • 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

Exclusion criteria

  • 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

Treatment and study plan

Pain Group

Other

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 Group

Other

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.

Primary outcomes

  1. 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.

Secondary outcomes

  1. Maximal grip force in dominant hand

    Time frame: Measured once at study enrollment

    Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols

  2. Maximal grip force in non-dominant hand

    Time frame: Measured once at study enrollment

    Maximum grip strength measured in kilograms using a calibrated Jamar hand-held dynamometer following standardized testing protocols

  3. Wrist pain intensity during gaming

    Time frame: Assessed at study enrollment, reflecting current pain experience during gaming activities

    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

  4. Weekly gaming hours

    Time frame: Assessed at study enrollment, reflecting average from the past month

    Self-reported average number of hours spent gaming per week

Study contacts

Contact information is provided by the study sponsor or research team.

Mohamed M ElMeligie, Ph.D

CONTACT

[email protected]

01159880001

Sponsors and collaborators

Lead sponsor

Ahram Canadian University

Other

Registry information

Official study title

Evaluation of Grip Strength Asymmetry Index in Professional E-Sports Athletes as a Predictive Measure for Wrist Pain

Important dates

Study start
2025
Primary completion
2025
Study completion
2025
First posted
May 18, 2025
Registry last updated
May 18, 2025

OpenTrials presents study information sourced from ClinicalTrials.gov. The official registry record should be consulted for the latest information.

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This listing is for discovery and informational purposes only. It is not medical advice, does not guarantee that a study is recruiting, and does not determine eligibility. Contact the study team and a qualified healthcare professional when considering participation.

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