Table 3 Correlation between selected gait variablesa and MDS-UPDRS motor scores of patients with PD subtypes

From: Wearable sensor-based quantitative gait analysis in Parkinson’s disease patients with different motor subtypes

Gait parameters

TD

PIGD

r

p

r

p

Lower body-related gait parameters

 MAS Swing (%)

0.273

0.196

0.239

0.324

 MAS Stance (%)

−0.273

0.196

−0.239

0.324

 MAS Shank Backward Swing Maximum (°)

0.011

0.96

−0.164

0.503

 LAS Shank Backward Swing Maximum (°)

−0.282

0.182

0.055

0.822

 MAS Peak Shank Angular Velocity(°/s)

−0.392

0.058

  

 Shank Symbolic Symmetry Index (%)

−0.166

0.438

  

Trunk and lumbar−related gait parameters

 Trunk Coronal Peak Velocity (°/s)

  

−0.152

0.524

 Trunk Coronal RoM (°)

−0.138

0.519

−0.277

0.236

 Trunk Sagittal Peak Velocity (°/s)

  

−0.351

0.13

 Trunk Transverse Peak Velocity (°/s)

  

−0.634

0.003

 Lumbar Coronal RoM (°)

−0.147

0.494

−0.076

0.75

 Lumbar Sagittal Peak Velocity (°/s)

  

−0.424

0.063

Upper body-related gait parameters

 MAS Arm Peak Velocity (°/s)

  

−0.598

0.007

 LAS Arm Peak Velocity (°/s)

  

−0.593

0.007

 MAS Arm Backward Swing Maximum (°)

0.631

0.001

0.347

0.145

 LAS Arm Backward Swing Maximum (°)

  

0.611

0.005

 Arm Velocity Asymmetry (%)

0.187

0.381

  

 Arm Symbolic Symmetry Index (%)

0.373

0.073

0.03

0.9

Postural transitions related gait parameters

 Turning-Average Duration (s)

0.382

0.065

0.565

0.009

 Turning-Peak Velocity (°/s)

  

−0.452

0.045

Turning-Average Step Duration (s)

    

 Turning-Average Angular Velocity (°/s)

−0.376

0.07

−0.571

0.008

 Turning-Average Steps

0.27

0.202

  

 SiSt-Trunk Sagittal Peak Velocity (°/s)

−0.456

0.029

−0.605

0.005

 SiSt-Trunk Lean Backward Maximum (°)

−0.27

0.214

  

 StSi- Duration (s)

0.079

0.721

  

 StSi-Trunk Sagittal Peak Velocity (°/s)

−0.464

0.026

−0.604

0.005

 StSi-Trunk Lean Backward Maximum (°)

−0.295

0.172

−0.079

0.74

  1. PD Parkinson’s disease, MDS-UPDRS Movement Disorders Society-Unified Parkinson’s Disease Rating Scale, TD tremor-dominant, PIGD postural instability and gait disorder, MAS more affected side, LAS less affected side, RoM range of motion, SiSt sit to stand, StSi stand to sit. Spearman’s correlation coefficient (r) calculated for TD and PIGD patients. agait variables with significant Kruskal Wallis test and the corresponding pair-wise comparison. Bold values are marked as significant.
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