Relative contributions of infraspinatus and deltoid during external rotation in healthy shoulders

The study included 18 subjects aged older than 30 years with healthy shoulders bilaterally who were selected from a sample of convenience. Individual subjects were tested using a repeated-measures experimental design in a single testing session. Potential subjects were excluded if they had a history of shoulder pathology or surgery, current cervical pathology, or known systemic inflammatory conditions. Ethical approval was obtained from the University of South Australia?s Human Research Ethics Committee. The study included 18 subjects aged older than 30 years with healthy shoulders bilaterally who were selected from a sample of convenience. Individual subjects were tested using a repeated-measures experimental design in a single testing session. Potential subjects were excluded if they had a history of shoulder pathology or surgery, current cervical pathology, or known systemic inflammatory conditions. Ethical approval was obtained from the University of South Australia?s Human Research Ethics Committee.