Type

Conference Proceedings

Authors

Brian Caulfield
Garrett Coughlan
Niamh Reid
Kara Dolan
Martin O'Reilly
William Johnston

Subjects

Physiotherapy & Sport

Topics
personal sensing inertial measurement unit clinical research dynamic balance lumbar classification y balance test fatigue

Objective Classification of Dynamic Balance Using a Single Wearable Sensor (2016)

Abstract The Y Balance Test (YBT) is one of the most commonly used dynamic balance assessments in clinical and research settings. This study sought to investigate the ability of a single lumbar inertial measurement unit (IMU) to discriminate between the three YBT reach directions, and between pre and post-fatigue balance performance during the YBT. Fifteen subjects (age: 234, weight: 67.58, height: 1758, BMI: 222) were fitted with a lumbar IMU. Three YBTs were performed on the dominant leg at 0, 10 and 20 minutes. A modified Wingate fatiguing intervention was conducted to introduce a balance deficit. This was followed immediately by three post-fatigue YBTs. Features were extracted from the IMU, and used to train and evaluate the random-forest classifiers. Reach direction classification achieved an accuracy of 97.80%, sensitivity of 97.860.89% and specificity of 98.900.56%. Normal and abnormal balance performance, as influenced by fatigue, was classified with an accuracy of 61.90%-71.43%, sensitivity of 61.90%-69.04% and specificity of 61.90%-78.57% depending on which reach direction was chosen. These results demonstrate that a single lumbar IMU is capable of accurately distinguishing between the different YBT reach directions and can classify between pre and post-fatigue balance with moderate levels of accuracy.
Collections Ireland -> University College Dublin -> Insight Research Collection

Full list of authors on original publication

Brian Caulfield, Garrett Coughlan, Niamh Reid, Kara Dolan, Martin O'Reilly, William Johnston

Experts in our system

1
Brian Caulfield
University College Dublin
Total Publications: 273
 
2
Garrett Coughlan
University College Dublin
Total Publications: 33
 
3
Martin O'Reilly
University College Dublin
Total Publications: 18
 
4
William Johnston
University College Dublin
Total Publications: 8