Table 2 Participants’ demographic characteristics and the maximum voluntary isometric contraction for each of the seven muscles

Age (years) ^∞

 Mean ± SD

29.0 ± 0.9

Gender ^µ

 Male

21(100%)

Height (cm) ^∞

 Mean ± SD

175.6 ± 5.3

Weight (kg) ^∞

 Mean ± SD

75.9 ± 10.3

BMI (kg/m2) ^∞

 Mean ± SD

24.6 ± 2.9

Scapular Plane (degrees) ^∞

 Mean ± SD

6.2 ± 4.2

Maximum voluntary contraction (unit) ^∞

 Middle deltoid

2.2 ± 0.2

 Anterior deltoid

2.1 ± 0.2

 Supraspinatus

2.2 ± 0.3

 Upper trapezius

1.4 ± 0.5

 Posterior deltoid

2.1 ± 0.4

 Infraspinatus

1.6 ± 0.4

 Pectoralis major

1.4 ± 0.5