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Table 2 Duration of each phase of the drinking task cycle and peak velocities

From: Kinematic analysis of the daily activity of drinking from a glass in a population with cervical spinal cord injury

  Control group (n = 8) C6 group (n = 8) C7 group (n = 8)
Kinematic variables Median (IR) % mov time
Median (IR)
Median (IR) % mov time
Median (IR)
Median (IR) % mov time
Median (IR)
Movement times (s)       
Reaching (+ grasping) 1.04 (0.33) a, c 16.69 (3.86) b, d 2.57 (0.98) c 26.73(12.42) b 1.66 (1.07) a 21.83 (8.46)d
Forward transport 0.91 (0.36) 31.55 (10.04) a, b 1.20 (1.40) 41.76(10.97) a 1.28 (0.81) 40.24 (8.46) b
Drinking 1.37 (1.20) 54.97 (6.42) 1.96 (2.07) 59.75 (7.85) 1.41 (0.55) 54.48 (8.74)
Back transport 1.42 (0.39) 79.86 (4.92) 1.70 (0.96) 80.79 (5.58) 1.62 (1.18) 78.15 (8.24)
Returning 1.28 (0.25) a 100 (0) 1.73 (0.68) a 100 (0) 1.61 (0.62) 100 (0)
Total movement time 5.87 (1.80) a 100 (0) 8.52 (5.16) a 100 (0) 7.63 (4.25) 100 (0)
Peak velocity (PV) (m/s)       
PV for reaching 0.66 (0.09) 5.68 (1.80) a, c 0.56 (0.26) 2.57 (1.26) c 0.67 (0.53) 3.42 (1.91) a
PV for forward transport 0.69 (0.23) a 22.07 (4.53) c, d 0.44 (0.24) a, b 32.69(10.75) c 0.58 (0.60) b 30.51 (13.11) d
PV for back transport 0.72 (0.14) a 63.39 (3.98) 0.54 (0.15) a, c 67.60 (6.52) 0.79 (0.43) c 60.73 (9.62)
PV for returning 0.63 (0.08) 87.82 (4.68) c 0.52 (0.13) 92.46 (3.78) c 0.52 (0.20) 89.40 (7.78)
Joints Coordination       
Pearson index value -0.95(0.04)   -0.91 (0.11)   -0.95(0.08)  
  1. a, b (p < 0.05, with Bonferroni correction)
  2. c, d (p < 0.01, with Bonferroni correction)
  3. Joints Coordination: Coordination between shoulder and elbow flexion movements
  4. Abbreviations: IR- Interquartile range
  5. % mov time-% of total movement time