Validity of a portable force platform for assessing biomechanical parameters in three different tasks

Area of Science:

• Biomechanics
• Sports Science
• Clinical Biomechanics
• Human Movement Analysis

Background:

• Portable force plates offer potential for field-based biomechanical assessments.
• Accurate measurement of ground reaction forces is crucial for performance analysis and injury prevention.
• Validation of new portable devices against established gold standards is essential.

Purpose of the Study:

• To evaluate the precision and accuracy of the vertical and anterior-posterior force components of the portable PASCO PS-2142 force plate.
• To compare the portable force plate's performance against a gold standard force plate.
• To assess the force plate's reliability across different biomechanical tasks.

Main Methods:

• The study assessed impulse, peak force, and time to peak force.
• Participants performed vertical jumps, forward jumps, and sprint starts (60 trials total).
• Data from the portable PASCO PS-2142 force plate were compared to a gold standard force plate.

Main Results:

• The portable force plate demonstrated good precision and accuracy for vertical force components across all tasks.
• Anterior-posterior force components showed lower precision and accuracy but exhibited systematic errors, indicating good repeatability.
• All measured variables showed good agreement between the portable and gold standard force plates.

Conclusions:

• The portable PASCO PS-2142 force plate is a precise and accurate tool for measuring vertical forces in dynamic activities.
• Despite lower accuracy in the anterior-posterior direction, its systematic error suggests reliable performance.
• The findings support the use of this portable force plate in sports and clinical biomechanics settings.