Effect of the Spacing of Backpack Shoulder Straps on Cervical Muscle Activity, Acromion and Scapular Position, and Upper Trapezius Pain
نویسندگان
چکیده
[Purpose] This study investigated the effect of the spacing of backpack shoulder straps on cervical muscle activity, acromion and scapular position, and upper trapezius (UT) pain. [Subjects] Fourteen males aged 20-32 years, were recruited. [Methods] We measured the MPS (midcervical paraspinal) activity, acromial angle, scapular distance, and UT pain after gait carrying a backpack with different shoulder strap spacings. [Results] The MPS, scapular inferior distance, and UT pressure pain threshold was significantly decreased and the acromion angle was significantly increased when carrying a backpack with wide shoulder straps compared to narrow shoulder straps. [Conclusion] A backpack with wide shoulder straps may cause scapular depression syndrome and chronic UT pain.
منابع مشابه
Effect of backpack shoulder straps length on cervical posture and upper trapezius pressure pain threshold
[Purpose] This study was performed to investigate the effect of the length of backpack shoulder straps on upper trapezius muscle pain threshold and craniovertebral angle. [Subjects and Methods] There were 25 participants, with ages from 15 to 23 years old. Upper trapezius pain threshold and craniovertebral angle were measured for all subjects without the backpack then re-measured after walking ...
متن کاملThe effect of shoulder supporting banding and shoulder pulling banding using elastic bands on shoulder pain and scapular position of a scapular dyskinesis patient with shoulder depression and scapular downward rotation
[Purpose] This study developed methods of shoulder supporting banding and shoulder pulling banding using elastic bands for scapular dyskinesis patients with shoulder depression and scapular downward rotation and investigated the effect on shoulder pain and scapular position. [Subject] The subject was a scapular dyskinesis patient with shoulder depression and scapular downward rotation and shoul...
متن کاملTHE EFFECT OF EIGHT WEEKS OF SCAPULAR FOCUSED TRAINING ON PAIN, ELECTRICAL ACTIVITY OF SELECTED SHOULDER MUSCLES, AND UPPER EXTREMITY PERFORMANCE IN MALE VOLLEYBALL PLAYERS WITH SHOULDER IMPINGEMENT SYNDROME: A RANDOMIZED CLINICAL TRIAL
Background & Aims: Impingement syndrome is the most common injury and cause of movement limitations and pain in the shoulder area. The purpose of this study was to investigate the effect of eight weeks of focused scapular training on pain, electrical activity of shoulder muscles, and upper extremity performance in male volleyball players with shoulder impingement syndrome. Materials & Methods:...
متن کاملAssociations between cervical and scapular posture and the spatial distribution of trapezius muscle activity.
The first aim of this investigation was to quantify the distribution of trapezius muscle activity with different scapular postures while seated. The second aim of this investigation was to examine the association between changes in cervical and scapular posture when attempting to recruit different subdivisions of the trapezius muscle. Cervical posture, scapular posture, and trapezius muscle act...
متن کاملReal-time visual feedback can be used to activate scapular upward rotators in people with scapular winging: an experimental study.
QUESTION Can real-time visual feedback facilitate the activity of serratus anterior in individuals with scapular winging during shoulder flexion? DESIGN Comparative, repeated-measures experimental study. PARTICIPANTS Nineteen subjects with scapular winging. INTERVENTION Participants performed isometric shoulder flexion at 60° and 90° with and without real-time visual feedback using a vide...
متن کامل