scholarly journals Development and evaluation of a novel flex sensor-based glenohumeral subluxation degree assessment for wearable shoulder sling

Author(s):  
Shuangyuan Huang ◽  
Jiaming Zhou ◽  
Yude Yang ◽  
Zhonghua Chen ◽  
Shiman He ◽  
...  

Abstract Background: Glenohumeral subluxation (GHS) is reported in as many as 81% of patients with stroke, which presents considerable challenges for individuals involved in stroke rehabilitation. During rehabilitation, the joint head of the glenohumeral joint was maintained in the socket by wearing a GHS shoulder sling. To ensure that the glenohumeral joint head is in the socket, an orthosis is required to automatically adjust the degree of orthosis according to the degree of GHS. However, there is currently no wearable method for assessing the degree of GHS. This study aims to develop a GHS assessment method for patients with stroke that has the potential to be integrated into a wearable shoulder sling.Methods: To that end, we developed a GHS assessment method for patients with stroke based on a flex sensor, which has the potential to be integrated into a wearable shoulder sling. Seventeen patients with stroke in a diverse degree of GHS were recruited for the study. The curvature difference of the affected shoulder in the subluxation and reduction states was collected by flex sensor to calculate the degree of GHS (AGTD). Meanwhile, the GHS degree, calculated as the acromion–greater tuberosity distance di.fference (AGTD) of the affected and unaffected shoulder, was measured by the gold-standard radiographic assessment.Results: The GHS degree measurement by flex sensor and radiographic assessment has strongly correlated (r = 0.92, p < 0.01). The relationship of GHS degree measured by radiographic assessment (AGTD) and flex sensor (AGHS) is linear according to an interpolating curve with an equation: AGHS = 0.767AGTD + 1.781 (R2 = 0.84, RMSE = 1.61). The method has excellent reliability with R = 0.87, CI = 95% for assessment of GHS degrees.Conclusions: The proposed method demonstrates good performance, is wearable, easy to use, and allows automatic measurements, so as to be a valuable method to assessment of GHS.

Omni-Akuatika ◽  
2019 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Rugaya Serosero ◽  
Sulistiono Sulistiono ◽  
Nurlisa A. Butet ◽  
Etty Riani

Coconut crab (Birgus latro) is a crustacean that has a large size until four kilograms. The study  aimed to analyze sex ratio and growth pattern including the relationship of thorax length - body weight, thorax width - body weight and cephalothorax length plus rostrum - body weight in Daeo (Morotai Island), Laigoma (South Halmahera District) and Fitako (North Halmahera District). The sex ratio was determined using χ2 test and the growth pattern was tested by the b value through t test. The results showed sex ratio of 1: 0.9 in Daeo (n = 581), 1: 0.6 in Laigoma (n = 24), and 1: 2 in Fitako (n = 31). The relationship of thorax length, thorax width and cephalothorax length plus rostrum with body weight were strongly correlated (R2> 70%). The growth pattern of coconut crab in Daeo was negative allometric, while in Laigoma and Fitako were negative allometric and isometric.


2019 ◽  
Vol 22 ◽  
Author(s):  
Ioannis Nikolaou ◽  
Konstantina Georgiou ◽  
Vasiliki Kotsasarlidou

AbstractOur study explores the validity of a game-based assessment method assessing candidates’ soft skills. Using self-reported measures of performance, (job performance, Organizational Citizenship Behaviors (OCBs), and Great Point Average (GPA), we examined the criterion-related and incremental validity of a game-based assessment, above and beyond the effect of cognitive ability and personality. Our findings indicate that a game-based assessment measuring soft skills (adaptability, flexibility, resilience and decision making) can predict self-reported job and academic performance. Moreover, a game-based assessment can predict academic performance above and beyond personality and cognitive ability tests. The effectiveness of gamification in personnel selection is discussed along with research and practical implications introducing recruiters and HR professionals to an innovative selection technique.


2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Chaoran Yang ◽  
Lin Wang

This study compared the waist circumference (WC) measurements of Chinese children at different sites to determine the relationship between WC measurements and body fat. WC was measured at five sites in 255 subjects aged 9–19 years: immediately below the lowest rib (WC1), at the narrowest waist (WC2), the midpoint between the lowest rib and the iliac crest (WC3), 1 cm above the umbilicus (WC4), and immediately above the iliac crest (WC5). Body fat mass (FM), body fat percentage (% BF), body fat mass in the trunk (FM in the trunk), and fat percentage in the trunk (% BF in the trunk) were determined by dual-energy X-ray absorptiometry. The WCs were then compared through ANOVA with repeated measurement. The relationship of WC of each site with FM, % BF, FM in the trunk, and % BF in the trunk was examined through partial correlation. The WCs exhibited the following pattern: WC2 < WC1 < WC3 < WC4 < WC5 (p<0.001) in males and WC2 < WC1 < WC4, WC3 < WC5 (p<0.001) in females. The measured WCs were strongly correlated with FM, % BF, FM in the trunk, and % BF in the trunk. The WC measurements at five commonly used sites among Chinese children are different from one another. Results indicate that standardizing the anatomic point for the WC measurements is necessary.


2021 ◽  
Vol 78 (1) ◽  
pp. 197-207
Author(s):  
Marek Strzała ◽  
Arkadiusz Stanula ◽  
Piotr Krężałek ◽  
Wojciech Rejdych ◽  
Jakub Karpiński ◽  
...  

Abstract The aim of the study was to examine the impact of selected water- and dry-land predictors of 50-m front crawl performance among 27 male swimmers aged 19.3 ± 2.67 years. The following water tests were performed: front crawl tethered arm stroking in a water flume (flow velocity: 0.9 m·s–1) and leg tethered flutter kicking in a swimming pool. Anaerobic tests on dry land included arm cranking and a set of 10 countermovement jumps. The maximal and average forces generated by legs in tethered swimming (Fl max and Fl ave) turned out to be the strongest predictors of sprint swimming aptitude. These values were strongly correlated with total speed (Vtotal50) (r = 0.49, p < 0.05 and r = 0.54, p < 0.01, respectively), start, turn, and finishing speed (VSTF) (r = 0.60, p < 0.01 and r = 0.67, p < 0.01, respectively). The relationship of Fl max and Fl ave with surface speed (Vsurface) was moderate (r = 0.33, non-significant and r = 0.41, p < 0.05, respectively). The maximal force generated by arms (Fa max) during flume tethered swimming significantly influenced Vsurface and Vtotal50 (0.51, p < 0.01 and 0.47, p < 0.05, respectively). Its relationship with VSTF was close to significant (0.36, p = 0.07). Upper and lower limb dry-land tests showed lower and more holistic relationships with the 50-m front crawl race, however, being a good complement to overall fitness assessment. Specific in-water evaluation, especially the newly prepared flutter kicking test, as well as dry-land tests, can be applied to regularly monitor progress in swimming training, and to identify talented swimmers.


2017 ◽  
Vol 32 (1) ◽  
pp. 17
Author(s):  
João Henrique Parise Fortes ◽  
Felipe Guarda Dallavilla ◽  
Camila Tirapelli ◽  
Plauto Christopher Aranha Watanabe ◽  
Ana Caroline Ramos Brito ◽  
...  

INTRODUCION: The quality of dental restorations can be directly related to the maintenance of periodontal health. Particularly in relation to the contour of interproximal restorations, radiographs allow the assessment of possible excess or lack of proximal contact of restorative materials.OBJECTIVE: To evaluate the frequency of adequate and inadequate restorations, the type of restorative material and the relationship of these parameters with periodontal alterations.METHODS: One hundred digital panoramic radiographs were evaluated, with interproximal restorations being observed on these examinations, classifying them according to the material used and the quality of interproximal restoration and the presence of periodontal alterations. Thepossible correlation between these parameters was evaluated.RESULTS: The frequency of adequate restorations was 48% of restored proximal surfaces. Among the inadequate restorations, 46.2% and 53.8% were over-contour and lack of proximal contact, respectively. The restorations were metallic in 64% of cases.CONCLUSIONS: Over-contour were more common among metal restorations and lack of proximal contact was more frequent among non-metal restorations. The presence of restorations was associated with increased prevalence of periodontal alterations.


2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Antonis Polymeris ◽  
Peter D. Papapetrou ◽  
Georgios Katsoulis

Introduction.Significant correlations between BMI and some body circumferences have been previously reported. In this study we investigated if the average of the sum of eight body circumferences can be a substitute for BMI.Patients and Methods.BMI and eight body circumferences (neck, waist, hip, arm, forearm, wrist, thigh, and ankle) were measured in 193 apparently healthy women aged 20–83, and within a wide range of BMI. Women with BMI ≤ 24.9 were designated as normal, with BMI 25–29.9 as overweight and with BMI ≥ 30 as obese. The relationship of the average body circumference (ABC) of the sum of the eight circumferences, and of each individual circumference with BMI, was evaluated.Results.ABC had the strongest correlation with BMI (r=0.95,P<0.001) among all the circumferences tested. Hip circumference had the strongest correlation with BMI (r=0.89,P<0.001) among the circumferences of individual body sites. Receiver-Operator Characteristic analysis showed that women with ABC > 44.0 cm could be recognized as having BMI ≥ 25 with sensitivity 90.2% and specificity 88.5%, while women with ABC > 47.1 cm could be diagnosed as having BMI ≥ 30 with sensitivity 92.2% and specificity 91.5%.Conclusion.An average body circumference strongly correlated with BMI in women and can serve as a surrogate of BMI.


2012 ◽  
Vol 588-589 ◽  
pp. 1934-1937
Author(s):  
Si Cheng ◽  
Yun Sheng Wang ◽  
Fei Yu Chen

Logistic regression model refers a regress analysis contains two types of variants. In geohazard analysis, each geological factor can be defined as independent variable, whether a geohazard happened or not can be defined as a dependent variable. 1 represents an occurrence of a hazard while 0 represents a hazard doesn’t break out. Because those factors aren’t continual variable, lineal regress is inadequate to deduce the relationship of such kind of independent and dependent variable. Therefore using logistic regress method is a feasible way to solve such technique problem.


1984 ◽  
Vol 54 (3) ◽  
pp. 864-866
Author(s):  
Ezra K. Arap-Maritim

This study was undertaken to assess the nature of the relationship of parental strictness to competitive and cooperative attitudes of primary school children as measured by Minnesota School Affect Assessment. On the competitive items 109 boys did not score significantly higher than 119 girls but the girls scored higher than the boys on the cooperative items. Girls perceived their parents as being more strict than boys. For boys a significant correlation was found between parental strictness items and competitiveness, whereas for girls both competitiveness and cooperativeness showed significant correlation with parental strictness. The children apparently expressed attitudes about their parents that were strongly correlated to their sex differences in attitudes. More cross-cultural research on specific child-rearing variables is recommended using valid and reliable measures such as the Minnesota School Affect Assessment.


Hand Surgery ◽  
2009 ◽  
Vol 14 (02n03) ◽  
pp. 105-112 ◽  
Author(s):  
M. R. Broadbent ◽  
I. Stevenson ◽  
C. MacEachern ◽  
A. J. Johnstone

As the distal radius fracture is one of the most commonly encountered upper limb injuries, the aim of this study was to provide a quick and easy method to aid in the assessment of fractured wrists, both pre- and post-fixation, by utilising the relationship of the radial shaft and the lunate. A retrospective analysis on 100 consecutive patients with normal wrist radiographs was performed. The results demonstrated that the variations of radiolunate anatomy followed a normal distribution. The normal anatomical relationship was then described. A second part to the study consisted of reviewing our method of radiocarpal analysis on a cohort of patients who had sustained a distal radius fracture. Carpal alignment pre- and post-fixation was measured, with the results demonstrating that by using this assessment method, it was possible with a quick glance of the radiograph, to determine whether satisfactory correction of the fracture had been achieved.


2021 ◽  
pp. 508-515
Author(s):  
Nathan Slegers ◽  
Davin Lee ◽  
Grant Wong

The aim of this study was to investigate the role of release parameter changes within individuals (intra-individual) on basketball shooting performance across both free throws and three-point shots, and identify whether any velocity dependence exists. Twelve male basketball players were recorded shooting seventy-five three-point shots (6.75 m) and fifty free throws (4.19 m). Ball release parameters were estimated by combining an analytic trajectory model including drag, a least squares estimator, and gradient-based release distance compensation. Intra-individual release velocity standard deviations (SD) were found to be significantly smaller across all distances ([0.05-0.13 m/s] when compared to statistics reported by other studies [0.2-0.8 m/s]). Despite an increase in lower body motion and a 24% increase in release velocity (p < 0.001) as shooting distance increased, no increases in intra-individual release velocity or angle SD were observed indicating velocity-dependent changes in release parameters were absent. Shooting performance was found to be strongly correlated to the release velocity SD (r = -0.96, p < 0.001, for three-point shots, and r = -0.88, p < 0.001, for free throws). Release angle SD (1.2 ± 0.24 deg, for three-point shots, and 1.3 ± 0.26 deg, for free throws) showed no increase with distance and unrelated to performance. These findings suggest that velocity-dependent factors have minimal contribution to shooting strategies and an individual’s ability to control release velocity at any distance is a primary factor in determining their shooting performance.


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