Table 3 Kendall’s tau correlation coefficients comparing disease dominantly affected upper limb kinematics, gait and UPDRS scores.

From: Amplitude setting and dopamine response of finger tapping and gait are related in Parkinson’s disease

 

Cadence (steps/min)

Mean stride time (s)

Mean stride length (cm)

CV stride time (%)

CV stride length (%)

OFF Motor UPDRS

OFF Total UPDRS

OFF brady motor UPDRS subscore

OFF brady ADL UPDRS subscore

MoCA

Secondary comparisons

 Mean tap amplitude (norm. unit)

Control

− 0.091, 0.535

0.066, 0.655

 

− 0.011, 0.941

0.054, 0.710

0.192, 0.202

0.182, 0.222

–

–

0.085, 0.588

PD

0.054, 0.692

− 0.063, 0.646

 

− 0.242, 0.076

− 0.185, 0.175

− 0.375, 0.006*

− 0.396, 0.004*

− 0.360,

0.011

− 0.390,

0.006*

0.135, 0.342

Exploratory comparisons

 CV tap amplitude (%)

Control

0.069, 0.637

− 0.044, 0.766

− 0.025, 0.862

− 0.025, 0.862

− 0.105, 0.472

− 0.222, 0.140

− 0.204, 0.171

–

–

− 0.037, 0.817

PD

0.043, 0.755

− 0.023, 0.868

− 0.151, 0.269

0.225, 0.100

0.179, 0.189

0.312, 0.023

0.287, 0.037

0.289,

0.041

0.266,

0.059

− 0.051, 0.720

 Mean tap interval (s)

Control

− 0.130, 0.372

0.135, 0.358

0.203, 0.165

− 0.007, 0.960

0.152, 0.298

0.045, 0.764

− 0.033, 0.823

–

–

0.073, 0.643

PD

0.077, 0.574

− 0.074, 0.588

0.202, 0.139

− 0.254, 0.064

− 0.185, 0.175

− 0.198, 0.150

− 0.281, 0.041

− 0.134,

0.343

− 0.337,

0.017

0.111, 0.435

 CV tap interval (%)

Control

0.094, 0.519

− 0.062, 0.673

0.138, 0.346

0.043, 0.766

0.072, 0.620

− 0.203, 0.177

− 0.211, 0.156

–

–

0.138, 0.381

PD

− 0.066, 0.632

0.074, 0.588

− 0.259, 0.058

0.208, 0.128

0.128, 0.348

0.226, 0.099

0.195, 0.156

0.265,

0.061

0.089,

0.529

− 0.117, 0.410

 Tap frequency (taps/s)

Control

0.169, 0.253

− 0.173, 0.242

− 0.147, 0.320

− 0.029, 0.842

− 0.147, 0.320

− 0.046, 0.764

− 0.007, 0.960

–

–

− 0.049, 0.757

PD

− 0.081, 0.559

0.078, 0.573

− 0.219, 0.112

0.242, 0.079

0.179, 0.195

0.229, 0.099

0.294, 0.035

0.175,

0.220

0.341,

0.016

− 0.140, 0.331

  1. Data reported as: Kendall’s tau correlation coefficient, p value; significant correlations are in bold.
  2. *correlations that were significant (p < 0.05) after application of a Benjamini–Hochberg adjustment.
Back to article page