Depth Sensor-Based Instrumentation of the Fukuda Stepping Test: Reliability and Clinical Associations in Older Adults

Area of Science:

• Biomechanics
• Gerontology
• Rehabilitation Technology

Background:

• The Fukuda Stepping Test is a clinical tool for assessing balance and postural control in older adults.
• Objective quantification of movement during the test can improve diagnostic accuracy and treatment monitoring.
• Markerless depth-sensing technology presents a novel approach for capturing detailed kinematic data.

Purpose of the Study:

• To evaluate the test-retest reliability of a depth sensor-based Fukuda Stepping Test.
• To investigate associations between sensor-derived kinematic parameters and established clinical outcomes in older adults.

Main Methods:

• Eighty-six community-dwelling older adults performed an eyes-closed Fukuda Stepping Test using a Microsoft Kinect v2 sensor.
• Test-retest reliability was assessed using intraclass correlation coefficients.
• Sensor data were correlated with clinical measures including the Berg Balance Scale and Timed Up and Go test.

Main Results:

• Temporal and displacement-based kinematic parameters showed good test-retest reliability.
• Selected angular variables exhibited greater variability across sessions.
• Significant associations were found between trunk kinematic changes and clinical functional mobility measures.

Conclusions:

• Markerless depth-sensing technology is feasible for objective quantification of movement during the Fukuda Stepping Test.
• Segmental kinematic parameters, especially upper trunk rotation, show potential for multidimensional functional assessment in older adults.
• This technology can enhance the objective evaluation of balance and mobility in geriatric populations.