Mackenzie, T., Bdaiwi, A., Herrington, L., Horsley, I., & Cools, A. (2015). Acromiohumeral distance during neuromuscular electrical stimulation of the lower trapezius and serratus anterior muscles in healthy participants. Journal of Athletic Training, 50(7), 713-718. https://doi.org/10.4085/1062-6050-50.4.03