Validity of the Vernier Go Direct Force Plate for Measuring Vertical Jump Performance

Area of Science:

• Biomechanics
• Sports Science
• Human Movement Analysis

Background:

• Accurate measurement of ground reaction forces is crucial for assessing athletic performance.
• Laboratory-grade force plates are the gold standard but can be expensive and inaccessible.
• There is a need for cost-effective and valid alternatives for dynamic strength assessment.

Purpose of the Study:

• To evaluate the validity of the Vernier Go Direct force plate.
• To compare its measurements against a laboratory-grade AMTI force plate.
• To assess its utility in squat jump (SJ) and countermovement jump (CMJ) assessments.

Main Methods:

• Forty physically active university students (20 males, 20 females) participated.
• Vertical ground reaction force was recorded simultaneously using both force plates during SJ and CMJ.
• Twenty-eight force-time variables were analyzed for agreement and bias.

Main Results:

• Squat Jump (SJ) parameters showed excellent agreement (ICC: 0.986-0.997) with minimal bias (-4.0% to 3.6%).
• Countermovement Jump (CMJ) parameters demonstrated good to excellent agreement (ICC: 0.846-0.999) with minimal bias (-3.1% to 3.3%).

Conclusions:

• The Vernier Go Direct force plate is a valid tool for measuring vertical jump performance.
• It offers a cost-effective alternative for dynamic strength assessment.
• Its findings support its use in applied sports science research and physical education.