Table 1 Baseline characteristics

Age (mean ± SD)

61.7 ± 13.4

60.3 ± 13.0

0.56

Male/female (n)

33/30

32/31

–

Employed/unemployed/full time sick leave/partial sick leave/retired (n)

33/2/2/0/26

33/3/2/0/25

–

 Constant Score (0–100)

37.7 ± 11.6

36.3 ± 9.7

0.47

 Shoulder Rating Questionnaire (0–100)

54.1 ± 14.5

50.2 ± 14.9

0.14

 Passive flexion

148.8 ± 37.8

141.6 ± 42.0

0.32

 Passive abduction

119.7 ± 42.4

109.0 ± 40.1

0.15

 Passive outer rotation

42.4 ± 11.6

43.1 ± 9.5

0.74

 Passive inner rotation

3.0 ± 1.5

3.1 ± 1.6

0.61

 Active flexion

145.1 ± 39.4

140.6 ± 42.4

0.54

 Active abduction

115.0 ± 42.8

107.6 ± 40.3

0.32

 Active outer rotation

42.4 ± 11.6

43.0 ± 9.5

0.77

 Active inner rotation

3.0 ± 1.5

3.2 ± 1.6

0.50

 Full can test

4.4±2.7

5.4±2.9

0.04

 Empty can test

4.7 ± 2.7

5.3 ± 2.9

0.19

 Lift off test

3.4±3.3

4.4±3.3

0.12

 Resisted external rotation test

3.1 ± 2.9

3.4 ± 2.9

0.61

 Palm up test

5.1±3.3

5.0±3.1

0.95

 Yergasons test

2.3 ± 2.4

2.0 ± 2.4

0.53

 Joint effusion, yes/no

3/60

1/62

–

 Sulcus effusion, yes/no

17/46

16/47

–

  Caput longum bicipitis

56/7/0/0/0

53/8/1/1/0

–

  Subscapularis

51/3/0/0/9

55/3/0/0/5

–

  Supraspinatus

15/28/16/0/4

15/31/14/0/3

–

  Infraspinatus

60/1/1/0/1

60/1/2/0/0

–