Skip to main content

Table 2 Comparison of RobottDCS and RobotSham kinematic and kinetic metrics at admission, discharge, and follow-up for the shoulder-elbow

From: Robotic Kinematic measures of the arm in chronic Stroke: part 1 – Motor Recovery patterns from tDCS preceding intensive training

SHOULDER-ELBOW

 

Admission

Discharge

Follow-up

Robotic Task

Metric

RobottDCS mean (SD)

RobotSham mean (SD)

Group Comparison (P value)

RobottDCS mean (SD)

RobotSham mean (SD)

Group Comparison (P value)

RobottDCS mean (SD)

RobotSham mean (SD)

Group Comparison (P value)

Unconstrained trained reaching (macro-metrics)

Deviation (m)

.030 (.032)

.030 (.028)

.511

.024 (.031)

.021 (.023)

.519

.027 (.033)

.022 (.023)

.437

Mean Speed (m/s)

.084 (.050)

.081 (.034)

.540

.094 (.047)

.091 (.032)

.464

.103 (.086)

.093 (.031)

.372

Speed shape

.487 (.067)

.500 (.079)

.218

.526 (.077)

.531 (.069)

.401

.526 (.076)

.532 (.064)

.322

Jerk (m/s3)

112.927 (300.934)

76.191 (203.966)

.824

58.847 (156.297)

33.952 (22.507)

.639

85.173 (250.909)

35.645 (36.063)

.415

Unconstrained trained reaching (micro-metrics)

Sub-movement number

8.148 (3.774)

7.267 (3.850)

.080

6.995 (3.535)

6.811 (3.584)

.391

6.634 (2.819)

6.390 (2.831)

.298

Sub-movement duration (s)

.556 (.170)

.0554 (.131)

.607

.589 (.138)

.622 (.114)

.143

.597 (.127)

.610 (.128)

.322

Sub-movement overlap (s)

.266 (.080)

.261 (.066)

.763

.283 (.067)

.293 (.051)

.414

.289 (.057)

.294 (.060)

.326

Unconstrained untrained circle drawing

Circle ratio

.662 (.247)

.667 (.231)

.578

.738 (.241)

.767 (.190)

.410

.698 (.232)

.751 (.181)

.166

Joint independence

.634 (.220)

.598 (.196)

.264

.551 (.198)

.494 (.151)

.168

.572 (.206)

.520 (.179)

.175

Minor axis (m)

.105 (.050)

.103 (.044)

.611

.118 (.045)

.122 (.038)

.414

.110 (.046)

.117 (.038)

.212

Reaching against resistance

Maximum displacement (m)

.109 (.033)

.102 (.037)

.733

.114 (.032)

.113 (.030)

.647

.111 (.030)

.113 (.029)

.567

Overall aim (radians)

.292 (.311)

.310 (.304)

.603

.244 (.313)

.213 (.274)

.230

.249 (.286)

.199 (.199)

.314

Maximum displacement (m)

.109 (.033)

.102 (.037)

.733

.114 (.032)

.113 (.030)

.647

.111 (.030)

.113 (.029)

.567

Isometric stabilization

Scatter (m)

.023 (.010)

.021 (.010)

.190

.021 (.011)

.018 (.011)

.116

.020 (.011)

.018 (.011)

.178

Offset (m)

.038 (.020)

.032 (.017)

.110

.034 (.020)

.028 (.015)

.171

.032 (.018)

.029 (.017)

.215

Shoulder-elbow kinetic evaluation

Shoulder strength (N)

33.353 (24.787)

34.182 (20.111)

.233

38.925 (27.531)

38.979 (23.207)

.326

37.613 (23.337)

38.325 (23.954)

.482

  1. Note: * indicates significance at p < 0.0167