Intermediate Back Muscles

Abstract: Context: Compromise to the acromiohumeral distance has been reported in participants with subacromial impingement syndrome compared with healthy participants. In clinical practice, patients with subacromial shoulder impingement are given strengthening programs targeting the lower trapezius (LT) and serratus anterior (SA) muscles to increase scapular posterior tilt and upward rotation. We are the first to use neuromuscular electrical stimulation to stimulate these muscle groups and evaluate how the muscle contraction affects the acromiohumeral distance. Objective: To investigate if electrical muscle stimulation of the LT and SA muscles, both separately and simultaneously, increases the acromiohumeral distance and to identify which muscle-group contraction or combination most influences the acromiohumeral distance. Design: Controlled laboratory study. Setting: Human performance laboratory. Patients or Other Participants: Twenty participants (10 men and 10 women, age = 26.9 ± 8.0 years, body mass index = 23....

Abstract: This is an open-access article distributed under the terms of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. The effect of integrated injection techniques for the serratus posterior superior muscle on interscapular pain, upper extremity pain, and paresthesia Hah-Yong Mun, MD, Soo Ji Sirh, MD, So Woon Sirh, MD, Heon Man Sirh, MD