The comparison of distance covered in each minute from 6-minute walk test between mobile application and standard 6-minute walk test in Hemodialysis patients
Keywords:
6-minute walk test, Mobile application, 3D accelerometer, HemodialysisAbstract
Chronic kidney disease (CKD) leads to a decrease in functional activities and quality of life. In Thailand, a study has been conducted using a mobile application to assess the 6-minute walk test (6MWT), which facilitates testing and allows for distance tracking each minute to observe walking trends over time. However, there has been no study conducted on CKD patients undergoing hemodialysis. This study aimed to compare the distance walked each minute during the 6-minute walk test using a mobile application with standard testing in CKD patients undergoing hemodialysis. Twenty-five CKD patients undergoing hemodialysis for at least six months participated in the study. A wrist-worn 3D accelerometer was attached to their dominant side to measure the walking distance and monitor vital signs, which were entered into the application. The test involved walking back and forth over a 15-meter distance for six minutes. After the test, vital signs were recorded again in the application. The researchers noted the actual distance walked each minute and compared with the application data. The results found that the average age of the participants was 65 years. The total distance recorded by the application deviated from the real distance by 2.81%, which is within the acceptable limit of 5% as per medical device standards. The distance walked each minute as recorded by the application also showed a deviation of less than 5% from the standard test, except for the second minute, which had a deviation of 6.87%. This findings suggest that the application can be used as a substitute for standard testing in CKD patients undergoing hemodialysis. The decrease in walking distance during the middle of the test may be attributed to muscle fatigue, while the slight increase in distance towards the end could be due to verbal encouragement in the last 15 seconds.
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