Skip to main content

Table 2 Descriptive data (mean ± standard deviation [SD])

From: Supraspinatus tendon thickness and subacromial impingement characteristics in younger and older adults

 

Younger

Older

Mean difference (95%CI)

SST thickness (mm)

5.2 ± 0.9

6.3 ± 1.6*a

1.153 (0.410 to 1.900)

AHD0 (mm)

9.6 ± 1.0

10.8 ± 1.7*b

1.176 (0.284 to 2.068)

AHD30 (mm)

6.6 ± 1.5†e

7.9 ± 2.4*c, †g

1.345 (0.082 to 2.609)

AHD60 (mm)

6.4 ± 1.4†f

7.6 ± 2.2*d, †h

1.289 (0.120 to 2.458)

ΔAHD0–30 (%)

31.6 ± 14.0

26.5 ± 19.6

−5.136 (−16.162 to 5.890)

ΔAHD0–60 (%)

34.3 ± 10.2

29.8 ± 13.6

−4.445 (− 12.184 to 3.295)

OcAHD0 (%)

53.9 ± 9.0

59.6 ± 16.2

5.648 (− 2.820 to 14.115)

OcAHD30 (%)

82.0 ± 22.3†i

86.0 ± 28.5†i

4.010 (− 12.090 to 20.111)

OcAHD60 (%)

84.3 ± 20.9†j

88.2 ± 28.3†j

3.817 (− 11.905 to 19.538)

  1. CI Confidence interval, SST Supraspinatus tendon, AHD Acromiohumeral distance, ΔAHD rate of change in acromiohumeral distance, OcAHD Occupation ratio
  2. *: Significant difference between groups
  3. †: Significant difference from baseline (i.e. at rest)
  4. a P = 0.008; t = 3.135
  5. b P = 0.011
  6. c P = 0.037
  7. d P = 0.032
  8. e P < 0.001; 95%CI = 1.930 to 4.198
  9. f P < 0.001; 95%CI = 2.513 to 4.064
  10. g P < 0.001; 95%CI = 1.968 to 3.821
  11. h P < 0.001; 95%CI = 2.543 to 3.809
  12. i P < 0.001; 95%CI = − 35.089 to − 19.378
  13. j P < 0.001; 95%CI = − 35.911 to − 23.106