TY - JOUR AU - Kelly, B; Kadma, W; Kirkendall, D TI - Optimal normalization tests for shoulder muscle activation: an electromyographic study JO - Journal of Orthopaedic Research VL - 14 PY - 1996 DO - 10.1002/jor.1100140421 SP - 647 EP - 653 N1 - et al. ER -