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Table 1 Results of the submaximal isometric contractions

From: Musculoskeletal application and validation of speckle-tracking ultrasonography

Muscle (% of MVC)

Mean ± s.d.

N0 of loops

95% CI of mean

P-values

Supraspinatus

 40%

−10.12 ± 3.24

30

−11.33 to −8.91

***p < 0.001

 60%

−14.85 ± 4.69

32

−16.54 to −13.16

****p < 0.0001

 80%

−20.96 ± 6.30

25

−23.56 to −18.37

****p < 0.0001

Biceps brachii

 20%

−9.35 ± 4.64

18

−11.66 to −7.04

**p < 0.01

 40%

−15.08 ± 5.60

23

−17.50 to −12.66

****p < 0.0001

 60%

−17.77 ± 4.26

24

−19.56 to −15.97

n.s.

  1. MVC maximal voluntary contractions, s.d standard deviation, CI confidence interval
  2. For statistical comparison please refer to Fig. 3b and Fig. 4b