scholarly journals Comparison of Shoulder Functions Between Workers With and Without Shoulder Impingement Syndrome

2020 ◽  
Author(s):  
Jun-hee Kim ◽  
Oh-yun Kwon ◽  
Chung-hwi Yi ◽  
Hye-seon Jeon ◽  
Woo-chol Joseph Choi ◽  
...  
Keyword(s):  
Muscle Strength ◽  
Internal Rotation ◽  
External Rotation ◽  
Impingement Syndrome ◽  
Shoulder Abduction ◽  
Shoulder Impingement Syndrome ◽  
Asymmetry Ratio ◽  
Shoulder Injuries ◽  
Shoulder Impingement ◽  
The Asymmetry

The occurrence of shoulder impingement syndrome (SIS) is associated with the frequent handling and lifting of heavy loads and excessive repetitive work above the shoulder level. Thus, assembly workers have a high prevalence of shoulder injuries, including SIS. The purpose of this study was to investigate differences in shoulder ROM, muscle strength, asymmetry ratio, function, productivity, and depression between workers with and without SIS.Sixty-seven assembly line male workers (35 workers with SIS and 32 workers without SIS) participated in this study. The four shoulder ROMs and the five muscle strengths were measured using a Smart KEMA system. The asymmetry ratios were calculated using the asymmetry ratio formula; shoulder functions were measured using the shoulder pain and disability index (SPADI), disabilities of the arm, shoulder, and hand (DASH), and visual analogue scale (VAS); and Endicott work productivity scale (EWPS). Severity of depression was measured using the Beck depression inventory (BDI). Independent t-tests were performed for statistical analysis.The SPADI, DASH, and VAS values of workers with SIS were significantly higher than those of workers without SIS. Also, workers with SIS had significantly smaller shoulder internal rotation and shoulder abduction compared to workers without SIS. In addition, workers with SIS exhibited significantly lower SIR muscle strength than workers without SIS. Workers with SIS had significantly higher asymmetry ratios in shoulder internal rotation, shoulder external rotation, and elbow flexion muscle strength than workers without SIS.The SPADI and DASH scores, which indicate shoulder function, were higher, and the intensity of self-aware pain was higher in workers with SIS. Also, workers with SIS exhibited reduced SIR and SAB ROMs; decreased SIR muscle strength. Particularly, the asymmetry ratios of SIR, SER, EF muscle strength are good comparable factors for workers with and without SIS. In addition, the asymmetry ratios of shoulder muscle strengths could provide an important baseline comparison for the workers with SIS.

Rotator Cuff Training for Pitchers

1998 ◽  
Vol 7 (4) ◽  
pp. 285-299 ◽  
Author(s):  
Michael E. Powers
Keyword(s):  
Rotator Cuff ◽  
Internal Rotation ◽  
High Speed ◽  
External Rotation ◽  
Shoulder Abduction ◽  
Muscular Endurance ◽  
Shoulder Injuries ◽  
Three Stages ◽  
Two Stages

This paper reviews the role of the rotator cuff during two key phases of the pitching sequence and presents a training program for these muscles. The program uses a periodization design consisting of three stages, beginning with a high-resistance/low-repetition eccentric strengthening stage. This is followed by a low-resistance/high-repetition stage for training muscular endurance. The core exercises for these two stages are prone external rotation in the 90/90 position, prone horizontal abduction, side-lying D2 flexion pattern, supine internal rotation in the 90/90 position, prone elevation with 100° of shoulder abduction and external rotation, and standing scapular plane elevation. The final stage of the program uses high-speed functional exercises: 90/90 external rotation, 90/90 internal rotation, D2 PNF flexion pattern, D2 PNF extension pattern, supine plyometric 90/90 internal rotation with a medicine ball, and the “arm whip” through the D2 PNF flexion pattern. The goal of this program is to prepare the muscles for the stresses of pitching and prevent shoulder injuries.

scholarly journals Shoulder Function and 3-Dimensional Scapular Kinematics in People With and Without Shoulder Impingement Syndrome

2006 ◽  
Vol 86 (8) ◽  
pp. 1075-1090 ◽  
Author(s):  
Philip W McClure ◽  
Lori A Michener ◽  
Andrew R Karduna
Keyword(s):  
Range Of Motion ◽  
Muscle Force ◽  
External Rotation ◽  
Impingement Syndrome ◽  
Control Group ◽  
Shoulder Impingement Syndrome ◽  
Shoulder Impingement ◽  
3 Dimensional ◽  
Scapular Kinematics ◽  
Shoulder Range Of Motion

Abstract Background and Purpose. Several factors such as posture, muscle force, range of motion, and scapular dysfunction are commonly believed to contribute to shoulder impingement. The purpose of this study was to compare 3-dimensional scapular kinematics, shoulder range of motion, shoulder muscle force, and posture in subjects with and without primary shoulder impingement syndrome. Subjects. Forty-five subjects with impingement syndrome were recruited and compared with 45 subjects without known pathology or impairments matched by age, sex, and hand dominance. Methods. Shoulder motion and thoracic spine posture were measured goniometrically, and force was measured with a dynamometer. An electromagnetic motion analysis system was used to capture shoulder kinematics during active elevation in both the sagittal and scapular planes as well as during external rotation with the arm at 90 degrees of elevation in the frontal plane. Results. The impingement group demonstrated slightly greater scapular upward rotation and clavicular elevation during flexion and slightly greater scapular posterior tilt and clavicular retraction during scapular-plane elevation compared with the control group. The impingement group demonstrated less range of motion and force in all directions compared with the control group. There were no differences in resting posture between the groups. Discussion and Conclusion. The kinematic differences found in subjects with impingement may represent scapulothoracic compensatory strategies for glenohumeral weakness or motion loss. The decreased range of motion and force found in subjects with impingement support rehabilitation approaches that focus on strengthening and restoring flexibility.

scholarly journals Effect of a 6-Week Strengthening Program on Shoulder and Scapular-Stabilizer Strength and Scapular Kinematics in Division I Collegiate Swimmers

2012 ◽  
Vol 21 (3) ◽  
pp. 253-265 ◽  
Author(s):  
Elizabeth E. Hibberd ◽  
Sakiko Oyama ◽  
Jeffrey T. Spang ◽  
William Prentice ◽  
Joseph B. Myers
Keyword(s):  
Muscle Strength ◽  
Internal Rotation ◽  
Intervention Program ◽  
External Rotation ◽  
Division I ◽  
Shoulder Injuries ◽  
Scapular Kinematics ◽  
Outcome Measurements ◽  
Weight Room ◽  
Stretching Exercises

Context:Shoulder injuries are common in swimmers because of the demands of the sport. Muscle imbalances frequently exist due to the biomechanics of the sport, which predispose swimmers to injury. To date, an effective shoulder-injury-prevention program for competitive swimmers has not been established.Objective:To assess the effectiveness of a 6-wk strengthening and stretching intervention program on improving glenohumeral and scapular muscle strength and scapular kinematics in collegiate swimmers.Design:Randomized control trial.Setting:University biomechanics research laboratory.Participants:Forty-four Division I collegiate swimmers.Interventions:The intervention program was completed 3 times per week for 6 wk. The program included strengthening exercises completed using resistance tubing—scapular retraction (Ts), scapular retraction with upward rotation (Ys), scapular retraction with downward rotation (Ws), shoulder flexion, low rows, throwing acceleration and deceleration, scapular punches, shoulder internal rotation at 90° abduction, and external rotation at 90° abduction—and 2 stretching exercises: corner stretch and sleeper stretch.Main Outcome Measurements:Scapular kinematics and glenohumeral and scapular muscle strength assessed preintervention and postintervention.Results:There were no significant between-groups differences in strength variables at pre/post tests, although shoulder-extension and internal-rotation strength significantly increased in all subjects regardless of group assignment. Scapular kinematic data revealed increased scapular internal rotation, protraction, and elevation in all subjects at posttesting but no significant effect of group on the individual kinematic variables.Conclusions:The current strengthening and stretching program was not effective in altering strength and scapular kinematic variables but may serve as a framework for future programs. Adding more stretching exercises, eliminating exercises that overlap with weight-room training and swim training, and timing of implementation may yield a more beneficial program for collegiate swimmers.

scholarly journals Pain Intensity and Function Improvement in Shoulder Impingement Syndrome with Kinesio Taping without Specific Technique

2017 ◽  
Vol 6 (01) ◽  
pp. 25
Author(s):  
Andhitya Dwi Ananda ◽  
Tirza Z. Tamin ◽  
I Nyoman Murdana
Keyword(s):  
Pain Intensity ◽  
Range Of Motion ◽  
Visual Analog Scale ◽  
Impingement Syndrome ◽  
Shoulder Abduction ◽  
Dash Score ◽  
Shoulder Impingement Syndrome ◽  
Analog Scale ◽  
Shoulder Impingement ◽  
Kinesio Taping

Background: Shoulder Impingement Syndrome (SIS) can occur in three age groups according to the stage ofits disease. The First stage of SIS mostly occurs in below 25 years old, while the second stage occurs in 25-40years old and third stage occur above 40 years old. The effectiveness of Kinesio Taping in SIS using Kaze’stechnique or modification of the technique has been proven to have positive benefits according to the previousstudies. However, the Kinesio taping have some challenges, like it has to replaced after some days application,it cannot apply by the patient, and it has some contraindications like an infection in the affected area, deep veinthrombosis, allergy to the tape, wound, and some other conditionsMethods: This study used pre and post-trial without control on subjects with SIS. The “sham” Kinesio Tapingapplication consists of three I-strips that applied with no tension for one week, with reapplication in three days.The outcomes were Pain intensity that was measured by Visual Analog Scale (VAS), flexion, abduction, andscaption range of motion, and quality of life that scored by the Quick Disability of Arm, Shoulder, and Hand(DASH) measurement tool.Result: Study subjects were 16 people with mean age is 59-year-old. There was a significant improvement in painintensity, both with movement and nocturnal pain (p<0.05). The range of motion also showed significant improvementin all three measurements: pain-free shoulder abduction, flexion, and scaption compared to the pre-test values(p<0.05).Quick DASH score also showed significant improvement compared to the pre-test values (p<0.05).Conclusion: Kinesio Taping may represent a useful adjunct therapy in the management of SIS. Results of thepresent study may challenge the suggested mechanisms for the effectiveness of Kinesio Taping.Keywords: Kinesio taping, Kaze technique, Shoulder impingement syndrome(SIS), allergy, deep vein thrombosis,Visual Analog Scale (VAS), Quick Disability of Arm, Shoulder, and Hand (DASH)

Força dos Músculos Rotadores do Ombro em Indivíduos Saudáveis/ Rotator Cuff Muscle Strength in Healthy Individuals

1970 ◽  
Vol 1 (1) ◽  
pp. 78-82
Author(s):  
Paulo José Oliveira Cortez ◽  
José Elias Tomazini ◽  
Mauro Gonçalves
Keyword(s):  
Rotator Cuff ◽  
Muscle Strength ◽  
Internal Rotation ◽  
Upper Limb ◽  
Statistical Difference ◽  
External Rotation ◽  
Healthy Individuals ◽  
Average Strength ◽  
Strength Tests ◽  
The Right

Introdução: A diminuição da capacidade de exercer esforços por parte dos músculos rotadores pode criar uma variedade de problemas. O conhecimento preciso do nível de força muscular de um indivíduo é importante, tanto para a avaliação da capacidade funcional ocupacional, como para uma apropriada prescrição de exercícios atléticos e de reabilitação. Percebe-se escassez de informação sobre as articulações do ombro, bem como os fatores envolvidos na força muscular dessa região. O objetivo deste estudo foi comparar a força gerada pelos músculos do manguito rotador entre o membro superior direito e o membro superior esquerdo em indivíduos saudáveis. Métodos: Participaram do estudo 22 sujeitos do sexo masculino, com idade de 18 e 19 anos, militares, saudáveis e sem história clínica de patologia ortopédica ou qualquer tipo de lesão no sistema musculoesquelético. Foram aplicados dois testes de força: Rotação Interna e Rotação Externa. Resultado : A força média de rotação interna no membro superior direito (MSD) foi maior que a força média de rotação interna no membro superior esquerdo (MSE) (p=0,723) e a força de rotação externa no MSD foi menor que a força média de rotação externa no MSE (p=0,788). Não houve diferença estatística na comparação dos valores de força de todos os testes de força isométrica. Conclusão: Para amostra estudada e metodologia utilizada na avaliação da força muscular, não houve diferença estatística na comparação da força gerada pelos músculos do manguito rotador do membro superior direito e do membro superior esquerdo.Rotator Cuff Muscle Strength in Healthy Individuals Introduction: Decreased ability to exert efforts by the rotator muscles can create a variety of problems. The precise knowledge of the level of muscular strength of an individual is important for both the functional capacity evaluation for occupational as an appropriate exercise prescription and rehabilitation of athletic. It is perceived scarcity of information on the shoulder joints as well as factors involved in muscle strength in this region. Objective: Develop a device for measuring the strength generated by the muscles of the upper limbs and the verification of efficiency and adaptability of this device through a comparative study of muscle strength in healthy subjects. Methods: The study included 22 male subjects, aged 18 and 19 years, military personnel, body mass between 57.7 and 93 kg (71.8 ± 9.45 kg) and height between 1.67 and 1.90 m (1.75 ± 0.06 m), healthy and without a history of orthopaedic disease or any kind of damage to the musculoskeletal system. Three strength tests were applied: Internal Rotation and External Rotation. For each type of effort three maximum voluntary contractions were required for 10 seconds, with an interval of 30 seconds between each contraction.  Results: Internal rotation in the right upper limb (RUL) was higher than the average strength of internal rotation in the left upper limb (LUL) (p = 0, 723) and the external rotation strength in RUL was lower than the average strength of external rotation in the LUL (p=0,788).  No statistical difference in comparing the strength values of all isometric strength tests. Conclusion: For sample and methodology used to assess muscle strength, there was no statistical difference in comparing the force generated by the muscles of the rotator cuff of the right and left upper limb.

scholarly journals Delayed Rehabilitation Protocol after Rotator Cuff Repair

Osteology ◽  
2020 ◽  
Vol 1 (1) ◽  
pp. 29-38
Author(s):  
Alessandra Berton ◽  
Sergio De Salvatore ◽  
Vincenzo Candela ◽  
Gabriele Cortina ◽  
Daniela Lo Presti ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Muscle Strength ◽  
Internal Rotation ◽  
Outcome Measures ◽  
Rotator Cuff Repair ◽  
External Rotation ◽  
Shoulder Function ◽  
Rehabilitation Protocol ◽  
Patient Reported ◽  
Cuff Repair

Rotator cuff tears are a frequent cause of shoulder pain that often require arthroscopic repair. After surgery an intense and well-studied rehabilitation protocol is needed to obtain the complete recovery of shoulder function. Fifty patients, who sustained arthroscopic rotator cuff repair for symptomatic, atraumatic and full-thickness supraspinatus tendon tear, were involved. According to our rehabilitation protocol, during the first four postoperative weeks, the arm was supported with an abduction sling pillow, and pendulum exercises, table slide and active elbow extension and flexion were conceded. Outcome measures (Oxford shoulder score (OSS), simple shoulder test (SST), patient-reported satisfaction), shoulder function (range of motion (ROM) and muscle strength), and MRI examination were evaluated. The mean OSS score and SST score increased from 16 to 30.2 and from 5.3 to 11.4, respectively. Patient-reported satisfaction was 96%. At 12 months, patients improved ROM and muscle strength. Postoperative passive anterior elevation was 176; external rotation averaged 47; internal rotation was 90. Postoperative muscle strength during anterior elevation was 8.3 ± 2.2 kg, internal rotation 6.8 ± 3 kg, external rotation 5.5 ± 2.3 kg. Five out of seven patients with recurrent tears evaluated their results as satisfactory. They reported improvements in terms of OSS and SST mean scores despite recurrent tears; therefore, they did not undergo revision surgery. The delayed postoperative physical therapy protocol was associated with improvements in the outcome measures and shoulder function compared to the preoperatory state and rotator cuff healing demonstrated by MRI.

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