Association Between Lower Trapezius Isometric Strength and Y-Balance Test Upper Quarter Performance in College Volleyball Players

2021 ◽  
pp. 1-6
Author(s):  
Guillermo Mendez-Rebolledo ◽  
Ann M. Cools ◽  
Rodrigo Ramirez-Campillo ◽  
Elias Quiroz-Aldea ◽  
Fernanda A.P. Habechian
Keyword(s):  
Upper Limb ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Isometric Strength ◽  
Serratus Anterior ◽  
Balance Test ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Volleyball Players ◽  
Lower Trapezius

Context: Knowing the possible association between the isometric strength of the shoulder rotators, scapular muscles, and the Y-balance test upper quarter (YBT-UQ) performance could help identify which indicators of shoulder stability should be considered in this field test. This study aimed to determine whether the isometric strength of the shoulder rotators and scapular muscles is associated with the YBT-UQ performance of the dominant upper limb in amateur volleyball players. Design: Cross-sectional study. Methods: A convenience sample of 22 male and 18 female volleyball players (≥12 h of training/week) between 18 and 26 years of age. The isometric strength of the middle trapezius, lower trapezius, serratus anterior, internal, and external rotator muscles was assessed with a handheld dynamometer. Participants performed the YBT-UQ in the superolateral, medial, and inferolateral directions. The absolute isometric peak force (in Newtons) was normalized to body weight (in Newtons per kilogram) for each muscle test. For each YBT-UQ direction, the distance (in centimeters) was normalized for upper limb length (in percentage). A backward multiple linear regression analysis was used to determine the associations between variables. Results: The analysis revealed that the isometric strength of the lower trapezius (β = 26.82; 95% confidence interval, 21.24–32.40) is associated with inferolateral YBT-UQ performance (adjusted R2 = .706; P < .001). This factor explains 70% of the variability of the YBT-UQ in the inferolateral direction. Conclusions: Lower trapezius isometric strength is associated with inferolateral YBT-UQ performance of the dominant upper limb in amateur volleyball players. These findings could help in the development of more specific training programs and rehabilitation goals according to the performance of the athletes in the test.

scholarly journals Evaluate Factors Influencing Depression in Baghdad: Using Deck-Depression Inventory

2019 ◽  
Vol 10 (3) ◽  
pp. 6
Author(s):  
Ali Azeez Ali Al-Jumaili ◽  
Sahar B. Aljuboori ◽  
Ammar A. Razzak Mahmood Kubba ◽  
Rawaa Fathel ◽  
Haneen Talab
Keyword(s):  
Regression Analysis ◽  
Linear Regression Analysis ◽  
Female Gender ◽  
Multiple Linear Regression Analysis ◽  
P Value ◽  
Depression Symptoms ◽  
Moderate Degree ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Factors Influencing

Objective: This study goal was to screen participants from different settings in Baghdad for depression using Beck Depression Inventory (BDI) scale and identify factors influencing the levels of depression. Methods: This cross-sectional study included a convenience sample of 313 people from four settings (teaching hospital, college of medicine, college of pharmacy, and high school) in Baghdad, Iraq. The participants were screened using paper survey relying on the BDI scale during spring 2018. Using multiple linear regression analysis, we measured the association between depression scores and six participant factors. Results: The overall prevalence of depression in our sample was 57.2%. Female participants had higher BDI scores (depression symptoms) than male participants.  Among those with depression, the majority (73.7%) had mild or moderate degree of depression. In terms of the cut-off scores, 42.8 % scored in the normal range, 20.4 % in the mild range, 7.0 % in the borderline range, 14.7 % in the moderate range, 10.5 % in the severe range and 4.5 % in the very severe range depression. Approximately 63% of the participants had sort of suicidal thoughts. The regression analysis showed significant (P-value < 0.05) association between having higher scores of depression symptoms and the presence of chronic disease(s), recent family loss, young age and female gender. Conclusions: In our findings, depression was quite prevalent among people in Iraq.  The study demonstrates the importance of broad screening and social/psychiatric counseling of young population. Iraqi healthcare professionals should structure specific actions for patients with chronic diseases to minimize their depression symptoms.   Article Type: Orignal Research

scholarly journals Determinants of Physical Activity among Jordanian University Students

2019 ◽  
Vol 4 (3) ◽  
pp. p191
Author(s):  
Khaldoun M Hamdan, PhD, RN ◽  
Abeer M Shaheen, PhD, RN
Keyword(s):  
Physical Activity ◽  
University Students ◽  
Self Efficacy ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Study Data ◽  
Perceived Benefits ◽  
Cross Sectional ◽  
Convenience Sample

Study Purpose: The purposes of this study were to examine the relationships between university students’ physical activity, self-efficacy and perceived benefits and barriers to exercise, and to identify predictors of physical activity among university students.Methods: A cross-sectional design was used in this study. A translated version of Exercise Benefits/Barriers Scale and Exercise Self-efficacy Scale were used to collect study data. A convenience sample of 517 university students participated in the study. Pearson correlation and multiple linear regression analysis were used to analyze the data.Results: Exercise self-efficacy demonstrated the highest positive correlation with physical activity (r=0.31, p<0.001) followed by exercise benefits (r=0.24, p<0.001). Exercise barriers were negatively correlated with physical activity. Exercise self-efficacy and exercise benefits significantly predicted physical activity among university students. Conclusions: The results of this study indicated that exercise self-efficacy and perceived benefits of exercise affect university students’ participation in physical activity.

scholarly journals The Relationship of Psychotherapist Demographic Variables to Discipline Board Misconduct Content

2020 ◽  
Author(s):  
Eric Strom ◽  
Cass Dykeman
Keyword(s):  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Family Therapist ◽  
Geographic Region ◽  
Predictor Variables ◽  
Cross Sectional ◽  
Convenience Sample ◽  
Professional Misconduct ◽  
Criterion Variables

This study was designed as an investigation of psychotherapist variables that correlate with the contents of findings of misconduct. While there is a scarcity of current research regarding clinician characteristics that correlate with professional misconduct, many assumptions and untested hypotheses appear. In particular, gender is often identified as a critical component of professional misconduct. Despite these common assertions, virtually no published research exists regarding correlations between gender and marriage and family therapist (MFT) professional misconduct. This study employed a retrospective cross-sectional study to analyze a randomized convenience sample of the records of final determinations of psychotherapist disciplinary actions across eight states. Four predictor variables (gender, years of experience, geographical region, and type of license) were correlated with five criterion variables consisting of word counts for five linguistic categories (family, substance, finance, sex, friend, and recordkeeping words). Frequency rates of the criterion variables were calculated. Relationships between all variables were evaluated through a multiple linear regression analysis. The data show a wide variation of prevalence rates across the predictor variables. Five of the multiple regression analyses produced statistically significant results. Gender was related to both family and substance use related words, while years of practice was related to family, finance, sex, friend, and recordkeeping words. No relationship was found between recordkeeping words and any of the predictor variables. Similarly, no relationship was found between any of the criterion variables and geographic region or license type.

scholarly journals The Clinical Investigation of Disparity of Utility Values Associated with Gallstone Disease: A Pilot Study

2013 ◽  
Vol 2013 ◽  
pp. 1-7 ◽  
Author(s):  
Chung-Te Hsu ◽  
Yi Liao ◽  
Jorn-Hon Liu ◽  
Tao-Hsin Tung
Keyword(s):  
Clinical Investigation ◽  
Gallstone Disease ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Older Age ◽  
Outpatient Clinics ◽  
Cross Sectional ◽  
Utility Values ◽  
Utility Evaluation

Purpose. The utility evaluation was an effective method to incorporate all of the contributing variables for multiple diseases into one outcome measure. A cross-sectional study was conducted to assess the utility values associated with varying states of gallstone disease among outpatient clinics participants at a teaching hospital in Taipei, Taiwan.Methods. The utility values were measured by using time trade-off method. A total of 120 outpatient clinics participants (30 subjects with no gallstone disease, 30 subjects with single stone, 30 subjects with multiple stones, and 30 subjects with cholecystectomy) evaluated utility values from January 1, 2006 to December 31, 2006. The diagnosis of gallstone disease was performed by a panel of specialists using ultrasound sonography.Results. The overall mean utility value was0.89±0.13(95% CI: 0.87–0.91) indicating that study participants were willing to trade about 11% (95% CI: 9–13%) of their remaining life in return for being free of gallstone disease perpetually. The significant associated factors of utility values based on the multiple linear regression analysis were older age and different degrees of gallstone disease.Conclusion. Our results found that in addition to older age, multiple stones and cholecystectomy could influence utility values from the patient’s preference-based viewpoint.

Relationship between fat-to-fat-free mass ratio and decrements in leg strength after downhill running

2001 ◽  
Vol 90 (4) ◽  
pp. 1334-1341 ◽  
Author(s):  
R. C. Hickner ◽  
P. M. Mehta ◽  
D. Dyck ◽  
P. Devita ◽  
J. A. Houmard ◽  
...  
Keyword(s):  
Body Mass ◽  
Muscle Glycogen ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Fat Free Mass ◽  
Mass Ratio ◽  
Low Fat ◽  
Cross Sectional ◽  
Leg Strength ◽  
Downhill Running

The purpose of this study was to determine whether greater body fat mass (FM) relative to lean mass would result in more severe muscle damage and greater decrements in leg strength after downhill running. The relationship between the FM-to-fat-free mass ratio (FM/FFM) and the strength decline resulting from downhill running (−11% grade) was investigated in 24 male runners [age 23.4 ± 0.7 (SE) yr]. The runners were divided into two groups on the basis of FM/FFM: low fat (FM/FFM = 0.100 ± 0.008, body mass = 68.4 ± 1.3 kg) and normal fat (FM/FFM = 0.233 ± 0.020, body mass = 76.5 ± 3.3 kg, P < 0.05). Leg strength was reduced less in the low-fat (−0.7 ± 1.3%) than in the normal-fat individuals (−10.3 ± 1.5%) 48 h after, compared with before, downhill running ( P < 0.01). Multiple linear regression analysis revealed that the decline in strength could be predicted best by FM/FFM ( r2= 0.44, P < 0.05) and FM-to-thigh lean tissue cross-sectional area ratio ( r2= 0.53, P < 0.05), with no additional variables enhancing the prediction equation. There were no differences in muscle glycogen, creatine phosphate, ATP, or total creatine 48 h after, compared with before, downhill running; however, the change in muscle glycogen after downhill running was associated with a higher FM/FFM ( r = −0.56, P < 0.05). These data suggest that FM/FFM is a major determinant of losses in muscle strength after downhill running.

scholarly journals Function, strength, and muscle activation of the shoulder complex in Crossfit practitioners with and without pain: a cross-sectional observational study

2022 ◽  
Vol 17 (1) ◽  
Author(s):  
Elisa Raulino Silva ◽  
Nicola Maffulli ◽  
Filippo Migliorini ◽  
Gilmar Moraes Santos ◽  
Fábio Sprada de Menezes ◽  
...  
Keyword(s):  
Shoulder Pain ◽  
Surface Electromyography ◽  
Shoulder Joint ◽  
Muscle Activation ◽  
National Registry ◽  
Kinetic Chain ◽  
Balance Test ◽  
Cross Sectional ◽  
Significant Difference ◽  
Lower Trapezius

Abstract Background The shoulder joint is the most commonly injured joint in CrossFit practitioners, because of the high intensity and loads associated with this sport. Despite the large number of clinical cases, there is a shortage of studies that investigate influence of biomechanical aspects of upper limbs' injuries on CrossFit practitioners. This study hypothesized that there would be a difference in function, strength, and muscle activation between Crossfit practitioners with and without shoulder pain. Methods We divided 79 Crossfit practitioners into two groups according to whether they reported pain (n = 29) or no pain (n = 50) in the shoulder during Crossfit training. Muscle function, strength, and activation were assessed using the Disability Arm, Shoulder and Hand function questionnaire, Upper Quarter Y Balance Test and Closed Kinetic Chain Upper Extremity Stability Test shoulder tests, isometric muscle strength assessment by manual dynamometry and muscle activation by surface electromyography and pain report. Results The function based on questionnaire was associated with pain (p = 0.004). We observed a statistically significant difference between the two groups only in the surface electromyography activity of the lower trapezius, and in the variables of shoulder pain and function (p = 0.038). Conclusion Crossfit practitioners with shoulder pain occurring during training showed good function and stability of the shoulder joint, but there was a reduction in the activation of stabilizing muscles, especially the lower trapezius. Trial registration Registro Brasileiro de Ensaios Clinico (Brasilian National Registry) with the ID: RBR-2gycyv.

scholarly journals Characteristics of Brain Structure in HIV Male Patients with Syphilis Co-Infection: A Cross-Sectional Study.

2021 ◽  
Author(s):  
Yu Qi ◽  
Yuan-Yuan Wang ◽  
Wei Wang ◽  
Xu-Ze Liu ◽  
Jing Liu ◽  
...  
Keyword(s):  
Corpus Callosum ◽  
Diffusion Tensor ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Infected Male ◽  
Syphilis Infection ◽  
Cross Sectional ◽  
Corona Radiata ◽  
Male Patients ◽  
The Right

Abstract Background To investigate the effect of syphilis infection on the microstructure of white matter (WM) in HIV-infected male patients through comparing the differences of WM between HIV-infected male patients with and without syphilitic infection using diffusion tensor imaging (DTI).Methods 27 HIV-infected male patients with current syphilis or a history of syphilis (HIV+/syphilis+) and 29 HIV-infected male patients without syphilis co-infection history (HIV+/syphilis-) were enrolled. All patients received DTI and comprehensive neuropsychological assessment. Clinical data were compared between the two groups with T-test, Mann-Whitney U Test and Chi-square Test. Tract-based spatial statistics (TBSS) was adopted to analyze the DTI metrics. Multiple linear regression analysis was conducted to investigate the relationships between DTI metrics and clinical variables and cognitive performance. Results In the HIV+/syphilis+ group, decreased AD was found in the right superior corona radiata (SCR-R) and body of corpus callosum (BCC); increased RD was found in the bilateral posterior corona radiata (PCR), the right posterior thalamic radiation (PTR-R), the left SCR (SCR-L), splenium of corpus callosum (SCC) and BCC; decreased FA was found in multiple regions. AD in BCC was negatively correlated with CD4/CD8 ratios. AD in SCR-R was positively correlated with CD4/CD8 ratios. Patients in HIV+/syphilis+ group had a lower score in complex motor skills (CMS). RD in SCC and SCR-L was negatively correlated with CMS; RD in PTR-R was positively correlated with CMS. AD in SCR-R was positively correlated with CMS. Conclusions Compared with patients simply infected with HIV, the integrity of WM is more seriously impaired in HIV-infected patients with syphilis co-infection, and it may accelerate the impairment of cognitive function.

scholarly journals Oxidative stress and gut-derived lipopolysaccharides in children affected by Paediatric Autoimmune Neuropsychiatric Disorders Associated with Streptococcal infections.

2020 ◽  
Author(s):  
Lorenzo Loffredo ◽  
Alberto Spalice ◽  
Francesca Salvatori ◽  
De Castro Giovanna ◽  
Cristiana Alessia Guido ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Linear Regression Analysis ◽  
Prostaglandin F2α ◽  
Neuropsychiatric Disorders ◽  
Serum Levels ◽  
Multiple Linear Regression Analysis ◽  
Tic Disorders ◽  
Streptococcal Infections ◽  
Cross Sectional

Abstract Background: pediatric autoimmune neuropsychiatric disorders associated with streptococcal infections syndrome (PANDAS) identifies patients with acute onset of obsessive-compulsive and tic disorders. The objective of this study was to assess NOX2 levels, as well as serum 8-iso-prostaglandin F2α (iso-PGF2α) and lipopolysaccharide (LPS) derived from Gram-negative bacteria in the gut of patients with PANDAS. Methods: a cross sectional study was performed to compare serum levels of soluble NOX2-dp (sNOX-2-dp), isoprostanes and LPS in 60 consecutive subjects, including 30 children affected by PANDAS and 30 controls (CT) matched for age and gender. Serum zonulin was used to assess gut permeability. Results: compared with CT, PANDAS children had higher values of sNOX-2-dp, 8-iso-PGF2-alpha and LPS. Simple linear regression analysis showed that sNOX2-dp was significantly correlated with serum LPS (Rs=0.359; p=0.005), zonulin (Rs=0.444; p<0.001) and iso-PGF2α (Rs=0.704; p<0.001). LPS significantly correlated with serum zonulin (Rs=0.610; p<0.001), and iso-PGF2α (Rs=0.591; p=0.001). A multiple linear regression analysis was performed to define the independent predictors of sNOX-2-dp. Isoprostanes and zonulin emerged as the only independent predictive variables associated with sNOX2-dp (R2=68%). Conclusion: this study provides evidences that children affected by PANDAS have high circulating levels of sNOX2-dp, isoprostanes and of LPS that could be potentially implicated in the process of neuroinflammation.

scholarly journals Analysis of Corneal Spherical Aberrations in Chinese Bilateral Ectopia Lentis Patients

2021 ◽  
Vol 8 ◽  
Author(s):  
Jiahui Chen ◽  
Yating Tang ◽  
Qinghe Jing ◽  
Yi Lu ◽  
Yongxiang Jiang
Keyword(s):  
Spherical Aberration ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Cross Sectional ◽  
Individual Measurement ◽  
Ectopia Lentis ◽  
Corneal Asphericity ◽  
Optical Zone ◽  
Anterior Posterior

Purpose: To analyze the anterior, posterior, and total corneal spherical aberrations (ASA, PSA, and TSA) in patients with Chinese bilateral ectopia lentis (EL).Methods: A cross-sectional study was conducted to evaluate corneal spherical aberration (CSA) using a Pentacam system at the 6-mm optical zone. Axial length, keratometry, astigmatism, and corneal asphericity were also determined.Results: This study included 247 patients (420 eyes) with a mean age of 18.1 years. The values of ASA, PSA, and TSA were 0.136 ± 0.100 μm, −0.118 ± 0.030 μm, and 0.095 ± 0.095 μm, respectively. In the EL patients with Marfan syndrome (MFS), ASA and TSA were significantly lower than in the non-MFS patients (0.126 ± 0.094 μm vs. 0.155 ± 0.107 μm, P = 0.004 for ASA; 0.085 ± 0.091 μm vs. 0.114 ± 0.099 μm, P = 0.003 for TSA), whereas PSA was not significantly different (P = 0.061). The values of ASA and TSA were significantly higher in the patients with EL aged ≥ 40 years old than in younger patients, whereas ASA and PSA were lower in patients aged &lt;10 years old than in older patients (all P &lt; 0.05). In the multiple linear regression analysis, age, keratometry, astigmatism, anterior asphericity, higher-order aberration (HOA), and lower-order aberration (LOA) were positively or negatively correlated with TSA in the patients with EL (r = 0.681, P &lt; 0.001).Conclusions: Corneal spherical aberration was low in the patients with EL especially for MFS and tended to increase with aging. Preoperatively, individual measurement of CSA was necessary for bilateral EL patients with MFS.

scholarly journals Association of Salivary Statherin, Calcium, and Proline-Rich Proteins on Oral Hygiene: A Cross-Sectional Study

2021 ◽  
Vol 2021 ◽  
pp. 1-6
Author(s):  
Deepak Gowda Sadashivappa Pateel ◽  
Shilpa Gunjal ◽  
Liew Fong Fong ◽  
Nur Sulwana Mohd Hanapi
Keyword(s):  
Oral Health ◽  
Negative Correlation ◽  
Oral Hygiene ◽  
Linear Regression Analysis ◽  
Rank Correlation ◽  
Multiple Linear Regression Analysis ◽  
Cross Sectional Study ◽  
Sectional Study ◽  
Cross Sectional ◽  
The Relationship

Background. Saliva, as a complex biofluid, plays a pivotal role in maintaining oral health and tooth integrity. There has been inconsistent data available on the relationship between salivary parameters and oral health. This study aims to investigate the association between salivary statherin, acidic proline-rich proteins (aPRP), and calcium with oral hygiene status. Methods. One hundred and eighty-eight healthy subjects aged between 18 and 50 years with varying oral hygiene status who gave consent to participate were included in this cross-sectional study. The subjects were recruited from primary oral health care of MAHSA University. Oral hygiene of all the participants was measured using Oral Hygiene Index–Simplified (OHI-S). Stimulated saliva collected using paraffin wax was analyzed for salivary statherin, aPRP, and calcium. The relationship between salivary statherin, aPRP, and calcium levels with OHI-S was assessed using Spearman’s Rank correlation coefficient; the strength of relationship was assessed by multiple linear regression analysis. Results. The study found a weak positive correlation (r = 0.179, p  = 0.014) between salivary statherin and OHI-S; weak negative correlation (r = −0.187, p  = 0.010) between salivary aPRP and OHI-S; and moderate negative correlation between salivary statherin and salivary aPRP levels (r = −0.50, p  < 0.001) which were statistically significant. Conclusion. Poor oral hygiene is associated with increased statherin and reduced aPRP levels in saliva. Thus, these salivary components may have a role in predicting oral hygiene status.

Sign in / Sign up

Export Citation Format

Share Document