Objective: The aim of this study was to compare two systems for gait measurement (GAITRite G-Walk system) and to assess their agreement for measurement of temporal and spatial gait parameters.

Background: Measurements of temporal and spatial gait parameters are very important in a clinical practice. Wearable systems for gait measurement are suitable for analyzing temporal and spatial gait parameters. These new devices are very popular because they are lightweight, portable, relatively cheap and easy to use.

Method: Forty healthy volunteers (26 men, 14 women, mean age 58.7 ± 7.7 years) were included to the study. Each subject walked across an electronic walkway GAITRite with embedded pressure sensors at preferred walking speed. Concurrently G-Walk sensor was attached with semi-elastic belt to the L5 spinal segment of the subject. Walking speed, cadence, stride length, stance phase, swing phase, single support and double support phase values were compared between the GAITRite system and G-Walk system.

Results: Intraclass correlation coefficient ICC (2, 1) for assessing level of agreement between both systems was 0.89 for walking speed, 0.99 for cadence, and 0.84 for stride length. The ICC (0.12 – 0.15) was for parameters expressed in a percentage of cycle. 95% limits of agreement ranged from -0.203 to 0.149 m/s for walking speed, -3.435 to 2.110 steps/min for cadence, -0.199 to 0.168 m for stride length, -8.176 to 1.072 % for stance phase, -1.082 to 8.168 % for swing phase, -1.222 to 8.409 % for single support phase, and -15.736 to 2.827 %.

Conclusion: This study confirms using of the G-Walk system as a valid system for measurements of cadence, walking speed and stride length. The system is also useful in measurements of stance, swing, single support phase and double support phase.

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MDS Abstracts - https://www.mdsabstracts.org/abstract/agreement-between-the-gaitrite-walkway-system-and-the-wearable-inertial-sensor-bts-g-walk-for-measurement-of-gait-parameters/