Posterior shoulder tightness, joint position sense,and shoulder strength in subjects with and without glenohumeral internal rotation deficit

2018 ◽  
Vol 31 ◽  
pp. e1
Author(s):  
Scheila Marisa Pinheiro ◽  
Bianca Rodrigues da Silva ◽  
Lorena Passos Vigolvino ◽  
Catarina de Oliveira Sousa
2006 ◽  
Vol 15 (4) ◽  
pp. 312-325 ◽  
Author(s):  
Hsiao-Yun Chang ◽  
Chen-Sheng Chen ◽  
Shun-Hwa Wei ◽  
Chi-Huang Huang

Context:Fatigue of the shoulder rotator muscles may negatively affect joint position sense (JPS) and ultimately lead to injury.Objective:Recovery of shoulder JPS after muscle fatigue.Design:A repeated-measures study.Setting:Musculoskeletal research laboratory.Patients:Thirteen subjects participated in joint position error tests and isokinetic concentric strength assessment in shoulder rotation, before and after rotator muscle fatigue.Interventions:Local muscle fatigue was induced using isokinetic concentric contractions of the shoulder rotator muscles.Main Outcome Measurements:Shoulder rotator strength and JPS error signals were measured before fatigue, immediately after fatigue, and every ten minutes thereafter for one hour.Results:Before shoulder rotation muscle fatigue, the accuracy of shoulder JPS was 2.79 ± 1.67 degrees. After muscle fatigue, the accuracy decreased to 6.39 ± 2.90 degrees. Shoulder JPS was influenced up to 40 minutes after muscle fatigue, but shoulder strength was only affected for 10 minutes after muscle fatigue.Conclusions:Proprioceptive recovery was slower than strength following fatigue of the shoulder rotators.


2021 ◽  
pp. 1-8
Author(s):  
Fahimeh Kamali ◽  
Narjes Ghasempour ◽  
Nasrin Salehi Dehno

BACKGROUND: Posterior shoulder tightness as demonstrated by glenohumeral internal rotation deficit (GIRD) is a common contributor to many shoulder pathologies in overhead throwing athletes. PURPOSE: This study aimed to assess immediate effect of combining glenohumeral and scapulothoracic mobilization with stretching on improving internal rotation range of motion (ROM) in overhead athletes with GIRD METHODS: This study was a single-blind randomized controlled trial with parallel groups. The participants were 30 asymptomatic male volleyball players who had a loss of shoulder internal rotation ROM of 15 degrees or more on their dominant compared to their nondominant side. They were randomly assigned to 1 of 2 groups: stretching only (n = 15) or stretching plus joint mobilization (n = 15). Participants in the stretching group performed cross-body stretches, and those in stretching plus mobilization group were treated with both cross-body stretching and mobilization techniques for the glenohumeral and scapulothoracic joints. Both groups received the intervention every other day for 1 week. Shoulder internal and external ROM were measured before and after the intervention. RESULTS: Before the intervention, dominant-side deficits in internal rotation ROM compared to the nondominant side were 20.11±5.27 degrees in the stretching group and 21.87±8.06 degrees in the stretching plus mobilization group. After the intervention, internal rotation ROM deficit between the dominant and nondominant side decreased to 11.28±5.82 in the stretching group (P <  0.001) and 10.85±9.19 in the stretching plus mobilization group (P <  0.001). However, the between-group difference was not statistically significant (P = 0.389). External rotation ROM remained unchanged in both groups (P >  0.05). CONCLUSION: Both interventions (stretching and stretching plus mobilization) can have the same beneficial effect in decreasing GIRD in asymptomatic overhead athletes.


2018 ◽  
Vol 1 (84) ◽  
Author(s):  
Vilma Jurevičienė ◽  
Albertas Skurvydas ◽  
Juozas Belickas ◽  
Giedra Bušmanienė ◽  
Dovilė Kielė ◽  
...  

Research  background  and  hypothesis.  Proprioception  is  important  in  the  prevention  of  injuries  as  reduced proprioception  is  one  of  the  factors  contributing  to  injury  in  the  knee  joint,  particularly  the  ACL.  Therefore, proprioception appears not only important for the prevention of ACL injuries, but also for regaining full function after ACL reconstruction.Research aim. The aim of this study was to understand how proprioception is recovered four and five months after anterior cruciate ligament (ACL) reconstruction.Research methods. The study included 15 male subjects (age – 33.7 ± 2.49 years) who had undergone unilateral ACL reconstruction with a semitendinosus/gracilis (STG) graft in Kaunas Clinical Hospital. For proprioceptive assessment, joint position sense (JPS) was measured on both legs using an isokinetic dynamometer (Biodex), at knee flexion of 60° and 70°, and at different knee angular velocities of 2°/s and 10°/s. The patients were assessed preoperatively and after 4 and 5 months, postoperatively.Research results. Our study has shown that the JPS’s (joint position sense) error scores  to a controlled active movement is significantly higher in injured ACL-deficient knee than in the contralateral knee (normal knee) before surgery and after four and five months of rehabilitation.  After 4 and 5 months of rehabilitation we found significantly lower values in injured knees compared to the preoperative data. Our study has shown that in injured knee active angle reproduction errors after 4 and 5 months of rehabilitation were higher compared with the ones of the uninjured knee. Proprioceptive ability on the both legs was  independent of all differences angles for target and starting position for movement. The knee joint position sense on both legs depends upon the rate of two different angular velocities and the mean active angle reproduction errors at the test of angular velocity slow speed was the highest compared with the fast angular velocity. Discussion and conclusions. In conclusion, our study shows that there was improvement in mean JPS 4 and 5 months after ACL reconstruction, but it did not return to normal indices.Keywords: knee joint, joint position sense, angular velocity, starting position for movement.


Author(s):  
Adel M. Madkhali ◽  
Shibili Nuhmani

Abstract Background Lateral ankle sprain is one of the most common injuries in competitive sports. Previous studies which investigated muscle strength and proprioception (joint position sense) focused on subjects who sustained ankle sprain with instability. It is also important to investigate strength deficits and proprioception in subjects with a history of ankle sprain without instability. Therefore the aim of the study is to investigate proprioception and muscle strength deficits in athletes with lateral ankle sprain. Methods Twenty-four male athletes with a history of lateral ankle sprain and 24 age-matched controls (mean age of 22.42±4.13 years, mean height of 173±5.73 cm, and mean weight of 71.20±7.55 Kg) participated in this cross-sectional study. Peak torque and peak torque ratio at speeds of 30 and 120°/s for concentric and eccentric ankle inversion/eversion were evaluated using an isokinetic dynamometer. The joint position sense of the ankle joint was evaluated using an active angle reproduction test. Result Peak torque produced was significantly less in subjects with history of ankle sprain in concentric inversion 30°/s(t(47)=4.11; p=0.000, Cohen’s d=1.29), concentric inversion 120°/s (t(47)=3.01; p=0.006, Cohen’s d=1.13), concentric eversion 30°/s (t(47)=3.85; p=0.001, Cohen’s d=1.24) and concentric eversion 120°/s (t(47)=3.15; p=0.005, Cohen’s d=1.09). At the same time there was no significant difference observed in eccentric eversion peak torque in both speed (eccentric eversion 30°/s p=0.079; eccentric eversion 120°/s p=0.867) between experimental and control group. No significant difference was found in the joint position sense in the maximal active inversion −5° position (p=0.312) and the 15° inversion position (P=0.386) between both group. Conclusion The study’s results reported a significantly less peak torque of invertors and evertors during concentric movements in athletes with history of ankle sprain. At the same time, no significant difference reported in the evertor/invertor peak torque ratio, and active joint position sense between the 2 groups.


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