Table 2 Intragroup differences in the accuracy (%) outcome measure.

From: Effects of movement representation techniques on motor learning of thumb-opposition tasks

Measure

Group

Mean ± SD

Mean difference (95% CI); effect size (d)

(a) post—1 week

(b) post—1 month

(c) post—4 months

Post

1 week

1 month

4 months

Left hand

PO

56.6 ± 12.6

51.6 ± 14.2

52.9 ± 12.4

45.8 ± 9.9

(a) 5.0 (− 4.6 to 14.6); d = 0.37

(b) 3.7 (− 6.9 to 14.4); d = 0.29

(c) 10.8 (− 4.3 to 26.0); d = 0.95

MI

93.7 ± 15.3

84.1 ± 18.8

77.9 ± 18.4

59.6 ± 22.5

(a) 9.6 (− 0.1 to 19.2); d = 0.56

(b) 15.8* (5.1 to 26.5); d = 0.93

(c) 34.1** (18.9 to 49.3); d = 1.77

AO

99.5 ± 1.6

97.5 ± 3.1

95.0 ± 16.2

84.1 ± 21.8

(a) 2.1 (− 7.5 to 11.7); d = 0.81

(b) 4.5 (− 6.1 to 15.2); d = 0.39

(c) 15.4* (0.2 to 30.6); d = 0.99

Right hand

PO

53.7 ± 17.8

55.4 ± 15.2

53.7 ± 12.4

40.8 ± 11.7

(a) − 1.6 (− 8.3 to 4.9); d = − 0.1

(b) 0 (− 10.0 to 10.0); d = 0

(c) 12.9* (0.9 to 24.9); d = 0.85

MI

78.7 ± 22.5

77.9 ± 22.0

74.1 ± 21.7

53.3 ± 23.8

(a) 0.8 (− 5.7 to 7.4); d = 0.03

(b) 4.5 (− 5.5 to 14.6); d = 0.2

(c) 25.4** (13.4 to 37.4); d = 1.09

AO

95.0 ± 8.2

92.9 ± 8.1

92.0 ± 15.9

85.41 ± 18.7

(a) 2.08 (− 4.5 to 8.7); d = 0.25

(b) 2.97 (− 7.2 to 13.0); d = 0.23

(c) 9.6 (− 2.4 to 21.5); d = 0.66

Both hands

PO

57.9 ± 11.6

49.1 ± 21.8

43.7 ± 6.8

41.7 ± 5.0

(a) 8.7 (− 2.2 to 19.7); d = 0.5

(b) 14.1** (6.3 to 22.0); d = 1.49

(c) 16.2** (6.8 to 25.5); d = 1.81

MI

72.0 ± 20.4

82.5 ± 19.9

66.2 ± 19.8

61.4 ± 19.5

(a) − 10.4 (− 21.4 to 0.6); d = − 0.52

(b) 5.8 (− 1.9 to 13.7); d = 0.28

(c) 10.6* (1.3 to 19.9); d = 0.53

AO

94.7 ± 5.6

90.8 ± 13.7

89.7 ± 9.8

78.0 ± 15.8

(a) 3.9 (− 7.0 to 14.9); d = 0.37

(b) 5.0 (− 2.7 to 12.9); d = 0.62

(c) 16.8** (7.4 to 26.1); d = 1.40

  1. *p < 0.05; **p < 0.001.
  2. AO action observation group, CI confidence interval, m month, MI motor imagery group, PO placebo observation group, SD standard deviation, w week.