scholarly journals Does grip strength correlate with rotator cuff strength in patients with atraumatic shoulder instability?

2022 ◽  
Vol 27 (1) ◽  
Author(s):  
Ruqayyah Turabi ◽  
Ian Horsely ◽  
Helen Birch ◽  
Anju Jaggi
Keyword(s):  
Rotator Cuff ◽  
Grip Strength ◽  
Shoulder Instability ◽  
External Rotation ◽  
Assessment Tools ◽  
Healthy Population ◽  
Rehabilitation Programs ◽  
Clinical Scenarios ◽  
Significant Regression ◽  
The Relationship

Abstract Aim To investigate if there is a correlation between grip strength (GS) and rotator cuff (RC) strength in patients with atraumatic shoulder instability (ASI) and to compare the relationship between these two measures with that previously published for a healthy population. Moreover, to determine if testing GS could be incorporated as a surrogate clinical assessment for RC strength in these patients. Methods A total of 20 subjects with ASI were included. Out of the 20 patients, eight presented with bilateral instability, which constituted a total of 28 atraumatic unstable shoulders (N = 28). GS was measured using a Jamar hand-dynamometer. External rotation (ER) and internal rotation (IR) strength was tested in inner and outer ranges using a hand-held dynamometer (HHD). Pearson’s correlation test was computed to investigate the relationship. Multiple linear regression was conducted to predict GS based on RC strength. Results Significant and strong positive correlations were found between GS and inner-range IR (r = 0.764, P < 0.001), inner-range ER (r = 0.611, P = 0.001), outer-range IR (r = 0.817, P < 0.001), and outer-range ER (r = 0.736, P < 0.001). A significant regression equation was found (F (4, 23) = 13.254, P < 0.001), with an R2 of 0.697 indicating that RC strength explained 69.7% of the variance in GS. Conclusions The results support the hypothesis showing that GS is strongly associated with RC strength in ASI patients. The simplicity of handgrip testing allows it to be used in clinical scenarios where sophisticated assessment tools are not available. GS is a convenient means to monitor patient progress during shoulder rehabilitation programs.

Increased Glenoid Retroversion Is Associated With Increased Rotator Cuff Strength in the Shoulder

2019 ◽  
Vol 47 (8) ◽  
pp. 1893-1900 ◽  
Author(s):  
Kenneth L. Cameron ◽  
David J. Tennent ◽  
Rodney X. Sturdivant ◽  
Matthew A. Posner ◽  
Karen Y. Peck ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Shoulder Instability ◽  
External Rotation ◽  
Baseline Data ◽  
High Risk Population ◽  
Healthy Population ◽  
Glenoid Version ◽  
The Mean ◽  
Rotation Strength ◽  
Glenoid Retroversion

Background: The rotator cuff muscles are critical secondary stabilizers in the shoulder. Increased glenoid retroversion and rotator cuff strength have been associated with the risk of posterior shoulder instability; however, the effect of increased glenoid retroversion on rotator cuff strength remains unclear. Purpose/Hypothesis: The purpose was to examine the association between glenoid version and rotator cuff strength in the shoulder in a young and healthy population with no history of shoulder instability. The hypothesis was that increased glenoid retroversion would be associated with increases in rotator cuff muscle strength. Study Design: Cross-sectional study; Level of evidence, 3. Methods: A prospective cohort study was conducted over a 4-year period within a high-risk population to identify the risk factors for shoulder instability. Analyzed participants included 574 freshmen entering a United States service academy. Baseline data collected upon entry into the study included magnetic resonance imaging measurements of glenoid version. Rotator cuff strength was also assessed at baseline using a handheld dynamometer. Internal and external rotation strength were assessed with the glenohumeral joint positioned in neutral and in 45° of abduction. The current study represents an analysis of the baseline data from this cohort. Results: The mean age, height, and weight of participants was 18.77 ± 0.97 years, 176.81 ± 8.48 cm, and 73.80 ± 12.45 kg, respectively. The mean glenoid version at baseline was 7.79°± 4.85° of retroversion. Univariate linear regression analyses demonstrated that increased glenoid retroversion was associated with increased internal and external rotation strength of the rotator cuff in neutral and 45° of abduction ( P < .001). Similar results were observed in multivariable models controlling for important confounding variables. Conclusion: The results of this study demonstrate that as glenoid retroversion increases, internal and external rotation strength of the rotator cuff also increase in a young and healthy athletic population. These compensatory changes may contribute to increased glenohumeral dynamic stability in the presence of worse static stability with increasing retroversion.

scholarly journals Electromyographical Comparison of Four Common Shoulder Exercises in Unstable and Stable Shoulders

2012 ◽  
Vol 2012 ◽  
pp. 1-11 ◽  
Author(s):  
Aaron Sciascia ◽  
Nina Kuschinsky ◽  
Arthur J. Nitz ◽  
Scott D. Mair ◽  
Tim L. Uhl
Keyword(s):  
Rotator Cuff ◽  
High Activity ◽  
Shoulder Instability ◽  
Glenohumeral Joint ◽  
External Rotation ◽  
Emg Activity ◽  
Moderate Activity ◽  
Serratus Anterior ◽  
Maximum Voluntary Isometric Contraction ◽  
Push Up

This study examines if electromyographic (EMG) amplitude differences exist between patients with shoulder instability and healthy controls performing scaption, prone horizontal abduction, prone external rotation, and push-up plus shoulder rehabilitation exercises. Thirty nine subjects were categorized by a single orthopedic surgeon as having multidirectional instability (n=10), anterior instability (n=9), generalized laxity (n=10), or a healthy shoulder (n=10). Indwelling and surface electrodes were utilized to measure EMG activity (reported as a % of maximum voluntary isometric contraction (MVIC)) in various shoulder muscles during 4 common shoulder exercises. The exercises studied effectively activated the primary musculature targeted in each exercise equally among all groups. The serratus anterior generated high activity (50–80% MVIC) during a push-up plus, while the infraspinatus and teres major generated moderate-to-high activity (30–80% MVIC) during both the prone horizontal and prone external rotation exercises. Scaption exercise generated moderate activity (20–50% MVIC) in both rotator cuff and scapular musculature. Clinicians should feel confident in prescribing these shoulder-strengthening exercises in patients with shoulder instability as the activation levels are comparable to previous findings regarding EMG amplitudes and should improve the dynamic stabilization capability of both rotator cuff and scapular muscles using exercises designed to address glenohumeral joint instability.

scholarly journals Pathology and clinical outcomes after arthroscopic stabilization in shoulders with traumatic anterior instability older than 40 years: Comparison between shoulders with the first dislocation before or after 40 years (241)

2021 ◽  
Vol 9 (10_suppl5) ◽  
pp. 2325967121S0034
Author(s):  
Yusuke Ueda PhD ◽  
Hiroyuki Sugaya ◽  
Norimasa Takahashi ◽  
Keisuke Matsuki ◽  
Morihito Tokai ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Shoulder Instability ◽  
External Rotation ◽  
Bankart Lesion ◽  
Rotator Cuff Tears ◽  
Anterior Shoulder Instability ◽  
Arthroscopic Stabilization ◽  
Group 2 ◽  
Group 1

Objectives: Traumatic anterior shoulder instability is common in young population but sometimes seen in middle-aged and elderly patients. The higher incidence of rotator cuff tears has been reported in middle-aged and elderly patients with anterior shoulder instability than young population. We, however, had an impression through clinical experiences that the pathology, including the incidence of rotator cuff tears, might be different by age at the first dislocation. There have been few articles that reported the pathology of shoulders with anterior shoulder instability in older population. The purpose of this study was to investigate pathology and clinical outcomes in patients who underwent arthroscopic stabilization at 40 years or older and to compare them between shoulders with the first dislocation before or after 40 years. Methods: The inclusion criteria of this study were as follows: 1) shoulders that underwent arthroscopic stabilization between October 2005 and September 2017, 2) traumatic anterior shoulder instability, and 3) 40 year old or older. The exclusion criterion was < 2-year follow-up. Glenoid morphology was evaluated with preoperative 3-dimensional computed tomography, and the size of glenoid bone defect was measured. Intraoperative findings, including rotator cuff tear, Bankart lesion, and humeral avulsion of the glenohumeral ligament (HAGL) lesion, and surgical procedures were investigated with surgical records. Range of motion was assessed preoperatively and at the final follow-up. Postoperative re-dislocation was also investigated. The subjects were divided into two groups according to the age at the first dislocation: Group 1, < 40 years; Group 2, 40 years or older. The findings and outcomes were compared between the two groups. The unpaired t-test was used to compare continuous data between the groups, and the paired t-test was used for pre- and postoperative comparison of continuous data. The chi-square test was used for categorical variables. The level of significance was set at p < 0.05. Results: Between October 2005 and September 2017, 198 shoulders (198 patients) underwent arthroscopic shoulder stabilization for traumatic anterior shoulder instability at 40 years or older. Fifty-six shoulders were excluded due to < 2-year follow-up, and 142 shoulders (142 patients) were included in this study. They consisted of 69 males and 73 females with a mean age of 51 (range, 40-78) years. The mean follow-up was 4 (range, 2-12) years. Group 1 included 105 shoulders (52 males and 53 females] with a mean age of 48 (range, 40-77) years. Group 2 included 37 shoulders (17 male and 20 females) with a mean age of 59 (range, 40-78) years. Group 1 had a longer time from the first dislocation to surgery (P<.001) and larger number of dislocation (P<.001) than Group 2 (Table 1). Bony Bankart lesion was more frequently seen in Group 2 than Group 1 (P=.02), and bone defect was greater in Group 1 than Group 2 (P=.02). The incidence of Bankart lesion or HAGL lesion was not significantly different between the groups. There were 2 full-thickness (1 small and 1 medium) and 16 joint-side partial-thickness rotator cuff tears in Group 1, while 16 full-thickness (4 small, 4 medium, 5 large, and 3 massive) and 8 joint-side partial-thickness tears were found in Group 2. The difference in the incidence of rotator cuff tears was significant between the groups (P<.001). Arthroscopic Bankart repair (ABR) with or without augmentation was performed in 103 shoulders (98 %) in Group 1 and in 35 shoulders (95%) in Group 2 (Table 2). There were 2 isolated HAGL repairs (2 %) in Group 1 and 2 isolated rotator cuff repairs (6 %) in Group 2. Two shoulders (6%) in Group 2 experienced re-dislocation. Forward flexion showed significant improvement from 159 (range, 100-180) to 170 (range, 140-180) degrees in Group 1 and from 148 (range, 40-180) to 163 (range, 70-180) degrees in Group 2 (P<.001 for each). Postoperative forward flexion showed no significant difference between the groups. External rotation showed no postoperative changes in both groups, while Group 1 had significantly better pre- and postoperative external rotation than Group 2. Conclusions: This study demonstrated that the incidence of rotator cuff tears was much higher in shoulders with the first dislocation after 40 years compared to shoulders with the first dislocation before 40 years. Shoulders with the first dislocation before 40 years had larger glenoid bone loss, while 51% of shoulders with the first dislocation after 40 years retained bony fragments. The longer time from the initial injury to surgery might be associated with the larger glenoid bone loss and absorption of bone fragments. Both groups showed satisfactory outcomes with the low rate of complications.

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 The Relationship between Clinical Tests, Ultrasound Findings and Selected Field-Based Wheelchair Skills Tests in a Cohort of Quadriplegic Wheelchair Rugby Athletes: A Pilot Study

2021 ◽  
Vol 11 (9) ◽  
pp. 4162
Author(s):  
Lucrezia Tognolo ◽  
Alfredo Musumeci ◽  
Andrea Pignataro ◽  
Nicola Petrone ◽  
Michael Benazzato ◽  
...  
Keyword(s):  
Rotator Cuff ◽  
Shoulder Joint ◽  
Rating Scale ◽  
Clinical Tests ◽  
Wheelchair Rugby ◽  
Manual Wheelchair ◽  
Shoulder Pathology ◽  
Cord Injury ◽  
Pathologic Findings ◽  
The Relationship

Manual wheelchair use may determine shoulder joint overload and rotator cuff injury. Chronic shoulder pathologies can also influence the propulsion ability of wheelchair athletes with spinal cord injury (SCI) during sport activities. However, the relationship between shoulder pathology and wheelchair performances has never been explored. Therefore, the study aimed to investigate the correlation between shoulder pathologic findings with clinical tests and ultrasonography evaluation and the results of wheelchair performance tests. Nineteen quadriplegic wheelchair rugby players were evaluated to investigate the association between clinical and ultrasound shoulder pathologic findings and their correlation with the performance of field-based selected wheelchair skills tests (WSTs). The outcome measures were the International Wheelchair Rugby Classification Score, dominant and non-dominant Physical Examination Shoulder Score, and dominant and non-dominant Ultrasound Shoulder Pathology Rating Scale (USPRS). The WST was measured at the beginning and at one-year follow-up. A statistically significant correlation was found between the time since SCI and dominant USPRS (p < 0.005). The non-dominant USPRS was strongly related to WST at the beginning (p < 0.005) and the end of the study (p < 0.05). Data suggest that the severity of the non-dominant shoulder pathology detected on the ultrasound is related to lower performance on the WST. Chronic manual wheelchair use could be responsible for dominant SCI shoulder joint and rotator cuff muscle damage, while non-dominant USPRS could be related to performance on the WST.

scholarly journals POS1456-HPR THE SERUM IRON LEVEL MIGHT BE USEFUL IN DETERMINING THE SEVERITY OF MALNUTRITION IN PATIENTS WITH RHEUMATOID ARTHRITIS

2021 ◽  
Vol 80 (Suppl 1) ◽  
pp. 1012.2-1012
Author(s):  
Y. Matsumoto ◽  
Y. Sugioka ◽  
M. Tada ◽  
T. Okano ◽  
K. Mamoto ◽  
...  
Keyword(s):  
Grip Strength ◽  
Serum Iron ◽  
Roc Analysis ◽  
Severe Malnutrition ◽  
Inflammatory Condition ◽  
Research Support ◽  
Chugai Pharmaceutical ◽  
The Relationship ◽  
Nutritional Indicator

Background:The Global Leadership Initiative on Malnutrition (GLIM) criteria, the first international criteria for diagnosis of malnutrition, was released in 2018 [1]. Patients with rheumatoid arthritis (RA) are thought to be prone to malnutrition due to decreased food intake and increased muscle catabolism caused by chronic inflammation or pain. However, there has been no report to assess the nutritional status of RA patients in accordance with the GLIM criteria. In addition, commonly used blood nutrient indicators such as albumin might not be appropriate as nutritional indicators for RA because these values are affected by inflammation.Objectives:This study aims to examine the rates of malnutrition in RA patients according to GLIM criteria, and the relationship between blood nutrient indicators and the severity of malnutrition.Methods:In this study, we conducted a cross-sectional survey of 135 female RA patients in 2020. According to the GLIM criteria, patients were considered to be malnourished if patients had one of the following phenotypic: (1) low body mass index, (2) non-volitional weight loss, (3) reduced muscle mass, and one of the following etiologic: (1) reduced food intake or assimilation, (2) disease burden/inflammatory condition. Reduced muscle mass was evaluated by measuring calf circumference, and inflammatory condition was evaluated by Disease Activity Score (DAS) 28. In accordance with the GLIM criteria, the severity of malnutrition was judged as three levels: no problem, moderate, and severe malnutrition. Albumin, transthyretin, transferrin, retinol binding protein, zinc, iron, ceruloplasmin, and total cholesterol were assessed as blood nutrition indicators. Also grip strength was assessed. We compared each nutritional indicator among the three groups according to the severity of malnutrition using age-adjusted analysis of covariance, and examined the relationship between each nutritional indicator and the severity of malnutrition using receiver operating characteristic (ROC) analysis.Results:In RA patients, 20% were classified as severe malnutrition, and 40% were moderate or more. Serum iron levels were significantly lower in the severe malnutrition group compared to the no problem group (p = 0.001). In ROC analysis, serum iron, zinc, albumin, and grip strength (area under curve; AUC; 0.680, 0.696, 0.636, 0.790, respectively) were significant parameters for classification of moderate and severe malnutrition. Serum iron and grip strength (AUC for respective parameters were 0.741, 0.747) were significant parameters for classification of severe malnutrition.Conclusion:Evaluation based on the GLIM criteria showed that about 40% of RA patients were under moderate or severe malnutrition. It was suggested that serum iron and grip strength might be useful to predict the severity of malnutrition.References:[1]Cederholm T, Jensen GL, Correia MITD, Gonzalez MC, Fukushima R, Higashiguchi T, et al. GLIM criteria for the diagnosis of malnutrition – A consensus report from the global clinical nutrition community. Clinical Nutrition 2019; 38: 1-9.Acknowledgements:We thank to Tomoko Nakatsuka, and the Center for Drug & Food Clinical Evaluation, Osaka City University Hospital, for management and collection of the study data. We also thank to study participants.Disclosure of Interests:Yoshinari Matsumoto Grant/research support from: Yamada Research Grant, Yuko Sugioka: None declared, Masahiro Tada: None declared, Tadasi Okano Speakers bureau: AbbVie, Asahikasei, Astellas Pharma Inc, Ayumi Pharmaceutical, Bristol-Myers Squibb, Chugai Pharmaceutical, Daiich Sankyo, Eisai, Janssen, Lilly, Mitsubishi Tanabe Pharma Corporation, Novartis Pharma, Ono Pharmaceutical, Pfizer, Sanofi, Takeda Pharmaceutical, Teijin Pharma and UCB, Grant/research support from: AbbVie, Eisai, Mitsubishi Tanabe Pharma Corporation and Nipponkayaku, Kenji Mamoto: None declared, Kentaro Inui Speakers bureau: Daiichi Sankyo Co. Ltd., Mitsubishi Tanabe Pharma, Janssen Pharmaceutical K.K., Astellas Pharma Inc., Takeda Pharmaceutical Co. Ltd., Ono Pharmaceutical Co. Ltd., Abbvie GK, Pfizer Inc., Eisai Co., Ltd., Chugai Pharmaceutical Co., Ltd, Grant/research support from: anssen Pharmaceutical K.K., Astellas Pharma Inc., Sanofi K.K., Abbvie GK, Takeda Pharmaceutical Co. Ltd., QOL RD Co. Ltd., Mitsubishi Tanabe Pharma, Ono Pharmaceutical Co. Ltd., Eisai Co., Ltd., Daiki Habu: None declared, Tatsuya Koike Speakers bureau: AbbVie, Astellas Pharma Inc, Bristol-Myers Squibb, Chugai Pharmaceutical, Eisai, Janssen, Lilly, Mitsubishi Tanabe Pharma Corporation, MSD, Ono Pharmaceutical, Pfizer, Roche, Takeda Pharmaceutical, Teijin Pharma, and UCB, Grant/research support from: AbbVie, Astellas Pharma Inc, Bristol-Myers Squibb, Chugai Pharmaceutical, Eisai, Janssen, Lilly, Mitsubishi Tanabe Pharma Corporation, MSD, Ono Pharmaceutical, Pfizer, Roche, Takeda Pharmaceutical, Teijin Pharma, and UCB

165 Sex differences in the relationship between self-reported sleep quality and frailty in South Florida older adult outpatients

SLEEP ◽  
2021 ◽  
Vol 44 (Supplement_2) ◽  
pp. A67-A67
Author(s):  
Sonya Kaur ◽  
Katalina McInerney ◽  
Mitchell Slugh ◽  
Annelly Bure ◽  
Marina Sarno ◽  
...  
Keyword(s):  
Older Adults ◽  
Sex Differences ◽  
Sleep Quality ◽  
Grip Strength ◽  
Brain Research ◽  
Functional Independence ◽  
South Florida ◽  
Left Hand ◽  
Depression Status ◽  
The Relationship

Abstract Introduction Frailty, a multidimensional construct of decreased reserve is an important predictor of functional independence and quality of life in older adults. There is a growing body of evidence highlighting reduced sleep efficiency and sleep duration predicts frailty in older adults. However, the sex differences in these relationships have been understudied. Methods 253 participants (163) ranging in age from 50-92 years (mean= 67.59 years, S.D.= 9.22 years), underwent frailty assessment and completed the Pittsburgh Sleep Quality Index (PSQI) and the Epworth Sleepiness Scale (ESS). Statistical moderation was assessed using nonparametric bootstrapping. All models statistically controlled for age, education and depression status. Results Higher scores on the PSQI predicted higher levels of fatigue (β=1.87, 95% CI= 0.48-3.27) and higher grip strength with the left hand (β= 0.81, 95% CI= 0.85-1.53). These relationships were significantly moderated by sex (β=-0.77, p=0.05 & β=-0.52, p=0.01). Specifically, high scores on the PSQI predicted more fatigue stronger grip strength in men (β=1.11, 95% CI=0.41-1.81) and weaker grip strength in women (β=-0.25, 95% CI=-0.51--0.02). There was no association between scores on the ESS and any of the frailty measures. Conclusion The relationships between PSQI scores and measures of fatigue and grip strength were statistically moderated by sex. These differences are not explained by sex differences in overall sleep quality or baseline frailty. This is consistent with the literature emphasizing sex differences in the effects of risk/lifestyle factors. It is possible that the relationship between sleep quality and frailty is altered by additional hormonal factors and warrant further investigation. Support (if any) This research was supported by the Evelyn F. McKnight Brain Research Foundation

Examining the Relationship Between Black Racial Identity Clusters and Postpartum Depressive Symptoms

2021 ◽  
pp. 107839032110026
Author(s):  
Kortney Floyd James ◽  
Dawn M. Aycock ◽  
Jennifer L. Barkin ◽  
Kimberly A. Hires
Keyword(s):  
Depressive Symptoms ◽  
Racial Identity ◽  
Assessment Tools ◽  
Future Research ◽  
Full Time ◽  
Black Mothers ◽  
Postpartum Depressive Symptoms ◽  
Black Racial Identity ◽  
Postpartum Mothers ◽  
The Relationship

Background: This study examined the relationship between racial identity clusters and postpartum depressive symptoms (PPDS) in Black postpartum mothers living in Georgia. Aims: A cross-sectional study design using Cross’s nigrescence theory as a framework was used to explore the relationship between Black racial identity and PPDS. Method: Black mothers were administered online questionnaires via Qualtrics. A total sample of 116 self-identified Black mothers were enrolled in the study. Participants ranged in age from 18 to 41 years ( M = 29.5 ± 5.3) and their infants were 1 to 12 months old ( M = 5.6 ± 3.5). The majority of mothers were married or cohabitating with their partner (71%), had a college degree (53%), and worked full-time (57%). Results: Hierarchical cluster analysis identified six racial identity clusters within the sample: Assimilated and Miseducated, Self-Hating, Anti-White, Multiculturalist, Low Race Salience, and Conflicted. A Kruskal-Wallis H test determined there was no difference in PPDS scores between racial identity clusters. Conclusion: This study is the first to explore the relationship between Black racial identity clusters of postpartum mothers and their mental health. Findings emphasize the complexity of Black racial identity and suggest that the current assessment tools may not adequately detect PPDS in Black mothers. The implications for these findings in nursing practice and future research are discussed.

scholarly journals Effect of Microcurrent Stimulation on Pain, Shoulder Function, and Grip Strength in Early Post-Operative Phase after Rotator Cuff Repair

Medicina ◽  
2021 ◽  
Vol 57 (5) ◽  
pp. 491
Author(s):  
Donghyun Yi ◽  
Hwanyong Lim ◽  
Jongeun Yim
Keyword(s):  
Rotator Cuff ◽  
Grip Strength ◽  
Rotator Cuff Repair ◽  
Controlled Trial ◽  
Shoulder Function ◽  
Control Group ◽  
Simple Shoulder Test ◽  
General Physical ◽  
Cuff Repair ◽  
Experimental Group

Background and Objectives: The purpose of this study was to investigate the effects of microcurrent stimulation on pain, shoulder function, and grip strength in patients with rotator cuff repair. Materials and Methods: This randomized single-blind controlled trial was conducted on inpatients of the rehabilitation department, and included 28 patients who underwent rotator cuff repair. Participants were randomly assigned to the experimental group (n = 14), treated with microcurrent stimulation, and the control group (n = 14), treated with false microcurrent stimulation. The microcurrent stimulation administered to the experimental group underwent general physical therapy and microcurrent stimulation three times a week for 4 weeks. Results: Changes in pain, range of motion in shoulder, simple shoulder test, and grip strength were assessed before and after the intervention. Both groups showed a significant decrease in pain and shoulder function (t = 27.412, 22.079, 19.079, and 18.561; p < 0.001), and grip strength showed a significant increase (t = −8.251 and −9.946; p < 0.001). The experimental group that underwent microcurrent stimulation exhibited a significant effect on pain, shoulder function, and grip strength compared with the control group that underwent false microcurrent stimulation (t = −2.17, −2.22, and 2.213; p = 0.039, 0.035, and 0.036). Conclusions: This study confirmed that microcurrent stimulation is effective for the treatment of rotator cuff repair patients.

Chronic Adaptations of the Posterior Rotator Cuff in Professional Pitchers

2021 ◽  
pp. 036354652098868
Author(s):  
Stephen J. Thomas ◽  
Justin Cobb ◽  
Scott Sheridan ◽  
Joseph Rauch ◽  
Ryan W. Paul
Keyword(s):  
Soft Tissue ◽  
Rotator Cuff ◽  
Internal Rotation ◽  
External Rotation ◽  
Negative Relationship ◽  
Muscle Thickness ◽  
Pennation Angle ◽  
Muscle Architecture ◽  
Infraspinatus Muscle ◽  
Teres Minor

Background: Because of the large forces and high frequency of throwing, the upper extremity experiences repetitive stresses that lead to acute and chronic adaptations. While the importance of pennation angle and muscle thickness as predictors of muscle force production has been shown in other populations and other joints, there has been little research done that examines these variables in the shoulders of baseball players. Purpose: (1) To examine the chronic effect pitching has on the rotator cuff muscle architecture (pennation angle and muscle thickness) in healthy professional baseball pitchers, and (2) to examine the correlation between muscle architecture and clinical measures of strength and range of motion (ROM). Study Design: Cross-sectional study; Level of evidence, 3. Methods: Twenty-eight healthy professional pitchers were recruited during the 2019 spring training. Internal rotation (IR) and external rotation (ER) strength were measured with a handheld dynamometer and IR and ER ROM were measured with an inclinometer. A diagnostic ultrasound machine was utilized to capture images of humeral retroversion, as well as the pennation angle and muscle thickness of the infraspinatus and teres minor muscles. ImageJ software was used to quantify the pennation angle and muscle thickness. Results: There were no significant differences between the dominant and nondominant arms for ER or IR strength. Also, no pennation angle and muscle thickness differences were found between the dominant and nondominant arms. A weak positive relationship between infraspinatus muscle thickness (superficial and total) and ER strength ( P = .016, R = 0.287 and P = .009, R = 0.316) and a moderate negative relationship between soft tissue glenohumeral internal rotation deficit (GIRD) and the bilateral difference of the teres minor deep pennation angle ( R = −0.477, P = .008) were observed. No other significant relationships were noted. Conclusion: Our results are contrary to current literature as we expected to see a stronger dominant arm, with a larger pennation angle and greater muscle thickness. Interestingly, we found that ER strength was positively related to only the thickness of the infraspinatus muscle, and that soft tissue GIRD was positively related to only the side-to-side adaptation of the pennation angle within the deep portion of the teres minor. This suggests that when posterior shoulder tightness occurs, specifically the architecture of the teres minor muscle is involved. However, the organization to which these players belonged has a very extensive training protocol throughout the year that emphasizes bilateral training during a large majority of the exercises. Therefore, the results may not be generalizable to all professional players.

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