TY  -  JOUR
AU  -  Saeediyoun, Farzad
AU  -  Norasteh, Ali Asghar
AU  -  Youzbashi, Leila
T1  -  Investigation of scapulohumeral rhythm, range of motion and strength in elite swimmers with and without scapular dyskinesis
PY  -  2025
Y1  -  2025-01-01
DO  -  10.1728/4552.45506
JO  -  Medicina dello Sport
JA  -  Med Sport
VL  -  78
IS  -  1
SP  -  23
EP  -  30
PB  -  Il Pensiero Scientifico Editore
SN  -  1827-1863
Y2  -  2026/03/14
UR  -  http://dx.doi.org/10.1728/4552.45506
N2  -  Summary. Background. Changes in the normal position of the scapula and the function of its stabilizing muscles can be a significant factor in creating abnormal shoulder girdle biomechanics. The strength and range of motion of the shoulder girdle and the scapulohumeral rhythm have been identified as contributing factors to scapular dyskinesis in individuals with scapular dyskinesis. The aim of the present study is to investigate the scapulohumeral rhythm, dyskinesis, as well as strength and range of motion in elite swimmers. Methods. This research is a causal-comparative. A total of 40 elite swimmers purposefully selected and divided into two groups of 20 individuals with (age: 19.13 ± 2.32 years) and without (age: 20.00 ± 2.95 years) scapular dyskinesis based on inclusion criteria. Results. There were no significant differences in the scapulohumeral rhythm at the 45-degree angle (p=0.998), 90-degree angle (p=0.999), and 135-degree angle (p=0.156); in the isometric strength for shoulder flexion (p=0.556), extension (p=0.671), abduction (p=0.648), internal rotation (p=0.521), external rotation (p=0.621), scaption (p=0.704), scapular elevation (p=0.858), and scapular protraction (p=0.899); in the range of motion for shoulder flexion (p=0.637), adduction (p=0.312), abduction (p=0.283), internal rotation (p=0.829), and external rotation (p=0.291). However, there was a significant difference in the isometric strength for shoulder adduction (p=0.048); in the range of motion for shoulder extension (p=0.004). Conclusion. So, it is advisable to consider exercises to increase the range of motion for swimmers with scapular dyskinesis. Scapular dyskinesis may lead to an increase in shoulder adduction strength in swimmers.
ER  -