Influence of reducing anterior pelvic tilt on shoulder posture and the electromyographic activity of scapular upward rotators

Abstract

Background: Modifications of posture in a segment may influence the posture of adjacent and nonadjacent segments and muscular activity. The spine-shoulder and spine-pelvis relationships suggest that the pelvis may influence shoulder posture. Objective: To investigate the effect of the active reduction of the anterior pelvic tilt on shoulder and trunk posture during static standing posture and on the electromyographic activity of the scapular upward rotators during elevation and lowering of the arm. Methods: Thirty-one young adults were assessed in a relaxed standing position and a standing position with 30% active reduction of the anterior pelvic tilt. The pelvic tilt, trunk posture, and forward shoulder posture during the static standing posture and the electromyographic activity during elevation and lowering of the arm were assessed. Results: Paired t-tests indicated that the active reduction of the anterior pelvic tilt reduced the trunk extension (MD = 1.09; 95%CI = −2.79 to −1.03). There were no effects on the forward shoulder posture (MD = 0.09; 95%CI = −0.92 to 1.09). Repeated measures of analyses of variance indicated an increase in lower trapezius electromyographic activity (MD = 3.6; 95%CI = 1.28 to 5.92). There was a greater reduction in upper trapezius activity after pelvic tilt reduction during arm elevation (MD = 1.52%; 95%CI = −2.79 to −0.25) compared to that during the lowering phase. There were no effects of pelvic tilt reduction on the electromyographic activity of the serratus anterior (MD = 3.26; 95%CI = −3.36 to 9.87).

Three-Dimensional Upper Body Kinematics and Inter-articular Kinematic Sequence During a Canoe Polo Throw

“…This is in accordance with the results obtained when using the swivel seat for paddling: while its use influenced the rotation angles between the pelvis and the trunk, the upper limb kinematics were less affected by the choice of the seat (Fohanno et al, 2011 ; Willmott and López-Plaza, 2014 ). It is also in accordance with the analysis from Murta et al ( 2020 ), who reported the impact of a pelvic mobility reduction on the trunk kinematics but not on the shoulder kinematics. The significant differences observed for the glenohumeral plane of elevation dof were limited to a couple of degrees (<10°) and for limited time periods (compared to the pelvis and trunk significant differences).…”

Effectiveness of neuromuscular taping on upper limb functionality and pain in elderly patients pos stroke

“…Active motion is required to build the stability of the scapula on the chest wall, and the pelvis position in the anterior pelvic tilt has a direct effect on the biomechanics of the upper limbs, causing the external rotation of the humerus (Appel, Mayston, & Perry, 2011;Griffin, & Bernhardt, 2006;Hanger, et al, 2000;Hayner, 2012;Murta, et al, 2020;Pandian, et al, 2013;Turner-Stokes, & Jackson, 2002). Complementing, the same authors point out a conflict between the evidence of the use of the neuromuscular bandage to reduce pain, function or even the upper limb range of motion (Griffin, & Bernhardt, 2006).…”

“…the evidence related to the activity and participation is insufficient (Appel, Mayston, & Perry, 2011;Grampurohit, Pradhan, & Kartin, 2015); Griffin, & Bernhardt, 2006;Hanger, et al, 2000;Hayner, et al, 2012;Hsieh, et al, 2021;Huang, et al, 2016;Mota, & Silva, 2014;Murta, et al, 2020;Pandian, et al, 2013;Turner-Stokes, & Jackson, 2002;Yang, L., Yang, J., & He, 2018). Pain was measured in two different manners in the included studies: through pain intensity and number of days without pain.…”

Clinical Measures of Pelvic Tilt in Physical Therapy

“…Changes in pelvic tilt have been found to influence the muscle activation during assessment and common exercises at not only the hip and pelvis, [36][37][38] but also the lumbar spine 39 and even the shoulder girdle. 40…”