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Table 6 Spearman’s rank correlation coefficients between clinical scales and parameters of the Visually Guided Reaching task

From: Clinical usefulness and validity of robotic measures of reaching movement in hemiparetic stroke patients

Parameters of VGR FMA-UE(A) SIAS-KM MAS elbow WMFT
-FAS (prox)
WMFT
-time (1, 2, 5, 6)
Posture Speed −0.24 −0.04 0.03 −0.01 0.01
Reaction Time −0.32b −0.28 0.15 −0.20 0.19
No Reaction Time −0.54 a −0.46 a 0.27 −0.52 a 0.37b
Initial Direction Error −0.60 a −0.42 a 0.46 a −0.57 a 0.42 a
Initial Distance Ratio 0.58 a 0.43 a −0.47 a 0.64 a −0.47 a
Initial Speed Ratio 0.57 a 0.42 a −0.47 a 0.62 a −0.44 a
Speed Maxima Count −0.58 a −0.45 a 0.47 a −0.59 a 0.40 a
Min Max Speed −0.40 a −0.28 0.36b −0.24 0.08
Movement Time −0.52 a −0.45 a 0.44 a −0.60 a 0.40 a
Path Length Ratio −0.54 a −0.49 a 0.48 a −0.53 a 0.34b
Max Speed −0.06 −0.09 −0.08 0.08 −0.14
No Movement End −0.58 a −0.49 a 0.37b −0.58 a 0.40 a
  1. a p < 0.01, b p < 0.05
  2. Underlined numbers are correlation coefficients higher than 0.40. n = 47. The data for participants who failed to reach the target during the trial (No Movement End = 64) or lacked any of the twelve parameters (n = 7) or who required any assistance in performing tasks 1, 2, 5, or 6 (n = 2) were excluded from data analysis
  3. FMA-UE(A) Part A of the Fugl-Meyer Assessment Upper Extremity, SIAS-KM Knee-Mouth test of Stroke Impairment Assessment Set, MAS Modified Ashworth Scale; WMFT-FAS (prox) total score of Functional Ability Scale in task 1–7 of the Wolf Motor Function Test, WMFT-time (1, 2, 5, 6) total performance time in tasks 1, 2, 5, and 6 of the Wolf Motor Function Test