Intertester reliability of assessing postural sway using the chattecx balance system

Area of Science:

• Biomechanics
• Kinesiology
• Physical Therapy

Background:

• Balance assessment is crucial in physical therapy and sports science.
• The Chattecx Dynamic Balance System offers a method for evaluating both static and dynamic balance.
• Intertester reliability is essential for consistent and dependable clinical assessments.

Purpose of the Study:

• To evaluate the intertester reliability of the Chattecx Dynamic Balance System for static and dynamic balance assessments.
• To determine the consistency of measurements across different testers.
• To identify potential variability in balance testing protocols.

Main Methods:

• Twelve subjects (10 female, 2 male) were tested by two independent testers.
• Ten preprogrammed balance conditions were administered, including double-leg and single-leg stances, with eyes open and closed.
• Balance was quantified by measuring postural sway in centimeters using the Chattecx system.

Main Results:

• Intraclass correlation coefficients (ICCs) ranged from poor to excellent (0.06 to 0.90).
• Standard error of measurement (SEM) values varied from 0.06 to 0.34 across trials.
• Mean postural sway values ranged from 0.28 cm to 1.72 cm for double-leg and 0.65 cm to 1.70 cm for single-leg stances.

Conclusions:

• Significant variability in intertester reliability was observed, suggesting potential inconsistencies in balance assessments.
• Further research is recommended to establish robust intratester and intertester reliability using diverse assessment protocols.
• Standardized protocols are needed to enhance the reliability of dynamic and static balance evaluations.