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Quantitative analysis of the bilateral coordination and gait asymmetry using inertial measurement unit-based gait analysis

 Seung Hwan Han  ;  Chang Oh Kim  ;  Kwang Joon Kim  ;  Jeanhong Jeon  ;  Hsienhao Chang  ;  Eun Seo Kim  ;  Hoon Park 
 PLOS ONE, Vol.14(10) : e0222913, 2019 
Journal Title
Issue Date
Inertial measurement unit (IMU)-based gait analysis can be used to quantitatively analyze the bilateral coordination and gait asymmetry (GA). The purpose of this study was to investigate changes in bilateral coordination and GA due to gait speed using an IMU based gait analysis and identify spatiotemporal factors affecting bilateral coordination and GA. Eighty healthy adults (40 men and 40 women) participated in the study. The mean age was 26.2 years, and the mean body mass index was 22.8 kg/m2. Three different walking speeds (80%, 100%, and 120% of preferred walking speed) on a treadmill were applied for 1 min of continuous level walking using a shoe-type IMU-based gait analysis system. The phase coordination index (PCI) and GA were calculated on three different walking speeds. Several variables (gait speed, height, body mass index, cadence, and step length) were analyzed as possible factors affecting the PCI and GA. Bilateral coordination and GA improved during fast walking (p = 0.005 and p = 0.019, respectively) and deteriorated during slow walking (p<0.001 and p = 0.008, respectively), compared with the participants' preferred walking speeds. The correlation analysis revealed that PCI was negatively correlated with step length at each walking condition and lower gait speed was negatively correlated with PCI and GA during slow walking. Both bilateral coordination and GA had a negative linear relationship with gait speed, showing an improvement in the fast walking condition and deterioration in the slow walking condition. Step length was the factor associated with the change in the bilateral coordination.
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1. College of Medicine (의과대학) > Dept. of Internal Medicine (내과학교실) > 1. Journal Papers
1. College of Medicine (의과대학) > Dept. of Orthopedic Surgery (정형외과학교실) > 1. Journal Papers
Yonsei Authors
Kim, Kwang Joon(김광준) ORCID logo https://orcid.org/0000-0002-5554-8255
Kim, Chang Oh(김창오) ORCID logo https://orcid.org/0000-0002-0773-5443
Park, Hoon(박훈) ORCID logo https://orcid.org/0000-0002-8063-3742
Chang, Hsienhao(장선호)
Han, Seung Hwan(한승환) ORCID logo https://orcid.org/0000-0002-7975-6067
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