1) Alpert, S. W., Pink, M. M., Jobe, W. F., McMahon, P. J., & Mathiyakom, W. : Electromyographic analysis of deltoid and rotator cuff function under varying loads and speeds, J. Shoulder Elbow Surg., 9, 47-58, (2000).
2) Ihashi, K., Matsushita, N., Yagi, R., & Hanada, Y. : Rotational action of the supraspinatus muscle on the shoulder joint, J. Electromyo. Kinesiolo., 8. 337-346, (1998).
3) Jenp, Y. N., Malanga, G. A., Growney, E. S., & An, K. N. : Activation of rotator cuff in generating isometric shoulder rotation torque, Am. J. Sports Med., 24, 477-485, (1996).
4) Kelly, B. T., Kadrmas, W. R., & Speer, K. P. : The manual muscle examination for rotator cuff strength, Am. J. Sports Med., 24, 581-587, (1996).
5) Greis, P. E., Kuhn, J. E., Schultheis, J. M., Hintermeister, R. A., & Hawkins, R. : Validation of the lift-off test and analysis of subscapularis activity during maximal internal rotation, Am. J. Sports Med., 24, 589-593, (1996).