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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