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Table 7 Outcome table for function

From: Effects of eccentric exercise in patients with subacromial impingement syndrome: a systematic review and meta-analysis

Study Number of participants Withdrawals/dropouts Intervention Eccentric exercise (painful eccentric exercise) Control Other exercise types (non-painful eccentric exercise) Comments
Bateman et al. (2014) [38] I: 4
C1: 4
(concentric group)
C2:3
(no exercise)
I: 1
C1: 1
C2: 0
Oxford Shoulder Score
Baseline: 34.0 (SD 5.3)
Post-treatment (8 weeks): 31.3 (SD 6.3)
Δ − 2.7
Oxford Shoulder Score
Baseline: 24.0 (SD 3.7)
Post-treatment (8 weeks): 24.3 (SD 4.2)
Δ + 0.3
Control group 2 (C2) excluded because no treatment was given.
Function measured with the 12-item Oxford Shoulder Score. Range 12–60, where 12 indicates no pain and normal function and higher is worse. MID 6 points [43].
Between-group difference in change:
Δ 3.0; in favor of eccentric exercise (ns)
Blume et al. (2015) [35] I: 18
C: 20
I: 0
C: 4
DASH
Baseline: 25.0 (SD 10.6)
Post-treatment (8 weeks): 12.1 (SD 11.7)
Δ − 12.9
DASH
Baseline: 21.2 (SD 6.5)
Post-treatment (8 weeks): 9.3 (SD 7.1)
Δ − 11.9
Function measured with the 30-item DASH questionnaire. Range 0–150, higher is worse. MID = 10.5 points [40].
Between-group difference in change:
Δ 1.0; in favor of eccentric exercise (ns)
Chaconas et al. (2017) [34] I: 25
C: 21
I: 0
C: 2
WORC
Baseline: 66.6 (SD 16.0)
Post-treatment (6 weeks): 87.6 (SD 14.5)
Δ + 21.0
At 6 months: 92.7 (SD 9.0)
Δ + 26.1
WORC
Baseline: 65.4 (SD 14.1)
Post-treatment (6 weeks): 70.6 (SD 16.8)
Δ + 5.2
At 6 months: 77.2 (SD 15.9)
Δ + 11.8
Function measured with WORC. Total range 0–2100 (aggregate score of 6 total sub-domains), here reported as scores out of 100 i.e. a percentage of normal score, where higher is better. MID = 275 points [39].
Between-group difference in change at 6 weeks:
Δ 17.0; in favor of eccentric exercise (p < 0.001)
Between-group difference in change at 6 months:
Δ 15.1; in favor of eccentric exercise (p = 0.007)
Dejaco et al. (2017) [37] I: 20
C: 16
I: 1
C: 1
Constant-Murley Score
Baseline: 72.5 (SD 17.7)
Post-treatment (12 weeks): 87.3 (SD 16.2)
Δ + 14.8
At 6 months: 86.9 (SD 16.8)
Δ + 14.4
Constant-Murley Score
Baseline: 78.9 (SD 8.5)
Post-treatment (12 weeks): 87.6 (SD 7.8)
Δ + 8.7
At 6 months: 88.8 (SD 8.1)
Δ + 9.9
Function measured with Constant-Murley Score. Four subscales (pain, ADL, ROM, strength). Total range 0–100, where 100 indicates excellent shoulder function. MID = 17 points [41].
Between-group difference in change at 12 weeks:
Δ 6.1; in favor of eccentric exercise (ns)
Between-group difference in change at 6 months:
Δ 4.5; in favor of eccentric exercise (ns)
Hallgren et al. (2014) [50] I: 51
C: 46
I: 1
C:1
Constant-Murley Score
Baseline: 48.5 (SD 15.0)
1-year follow up: 83.0 (SD 14.0)
Δ + 34.5
Constant-Murley Score
Baseline: 43.5 (SD 15.0)
1-year follow up: 76.0 (SD 18.0)
Δ + 32.5
Long-term follow-up of the study by Holmgren et al. 2012.
Baseline values from the Holmgren et al. paper.
Between-group difference in change:
Δ 2; in favor of eccentric exercise (ns)
Holmgren et al. (2012) [26] I: 51
C: 46
I: 0
C: 0
Constant-Murley Score
Baseline: 48.5 (SD 15.0)
Post-treatment (12 weeks): 72.5 (SD 19.0)
Δ + 24
Constant-Murley Score
Baseline: 43.5 (SD 15.0)
Post-treatment (12 weeks): 52.5 (SD 23.0)
Δ + 9
 
Between-group difference in change:
Δ 15; in favor of eccentric exercise (95% CI 8.5 to 20.6)
Maenhout et al. (2013) [25] I: 31
C: 30
I: 4
C: 5
SPADI
Baseline: 42.0 (SD 11.0)
Post-treatment (12 weeks): 17.0 (SD 11.4)
Δ −25.7
SPADI
Baseline: 44.3 (SD 11.5)
Post-treatment (12 weeks): 14.5 (SD 11.7)
Δ − 27.0
Measured with SPADI. A 13-item scale (5 items on pain, 8 on disability). Range 0–130, higher is worse. Pain and disability subscales not reported separately. MID = 18 points [40].
Between-group difference in change:
Δ 1.3; in favor of control (ns)
Vallés-Carrascosa et al. (2018) [32] I: 11
C: 11
I: 0
C: 0
Constant-Murley Score
Baseline: 35.0 (22.0; 47.0)
Post-treatment (4 weeks): 59.0 (50.0; 68.0)
Δ + 24.0
Constant-Murley Score
Baseline: 36.0 (22.0; 45.0)
Post-treatment (4 weeks): 65.0 (55.0; 69.0)
Δ + 29.0
Median (1st;3rd quartile)
Between-group difference in change:
Δ 5; in favor of non-painful eccentric exercise (ns)
  1. DASH Disabilities of the Arm, Shoulder and Hand questionnaire, WORC Western Ontario Rotator Cuff index, SPADI Shoulder Pain and Disability Index, MID minimal important differences, ns not significant
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