scholarly journals The effect of technique on tackle gainline success outcomes in elite level rugby union

2017 ◽  
Vol 13 (1) ◽  
pp. 16-25 ◽  
Author(s):  
Gregory J Tierney ◽  
Karl Denvir ◽  
Garreth Farrell ◽  
Ciaran K Simms
Keyword(s):  
Confidence Interval ◽  
Odds Ratio ◽  
Rugby Union ◽  
Chi Square ◽  
Centre Of Gravity ◽  
Elite Level ◽  
Chi Square Test

Tackling is a major component of rugby union and effective attacking and defensive play are essential for game outcomes. In this study, a number of pre-contact, contact and post-contact tackle characteristics that had an influence on tackle gainline success for the ball carrier and tackler were identified using match video evidence from European Rugby Champions Cup games. A total of 122 front-on tackles and 111 side-on tackles were analysed. For each ball carrier and tackler characteristic, the Odds Ratio and 95% Confidence Interval were calculated based on a gainline success outcome. A Chi-Square and Phi and Cramer’s V calculation was also conducted. A Chi-Square test then identified any statistically significant differences (p < 0.05) for proficiency characteristics between playing position. For both the ball carrier and tackler, tackle characteristics that were indicative of strong and powerful tackle technique such as ‘explosiveness on contact’ and ‘leg drive on contact’ were effective for achieving the desired gainline outcome. Playing position had an influence on only two proficiency characteristics that were statistically significant for gainline success: ‘fending into contact’ for ball carriers and ‘straight back, centre of gravity forward of support base’ for tacklers.

scholarly journals Students of physical education from concepted public universities partially know the bullying concept

1989 ◽  
Author(s):  
Maicon Rodrigues Albuquerque ◽  
◽  
Thais Frois ◽  
Fernanda Silva Lessa ◽  
Beatriz Hooper
Keyword(s):  
Physical Education ◽  
Confidence Interval ◽  
Undergraduate Students ◽  
Odds Ratio ◽  
Public Universities ◽  
Structured Interview ◽  
Chi Square ◽  
Chi Square Test ◽  
Education Courses

The aim of the present study was to verify the knowledge of undergraduate students in physical education about the concept of bullying. The sample consisted of 191 students. We used a structured interview, which was recorded and later transcribed. The statistics used were the chi-square test, the odds ratio (OR) and confidence interval (CI). The results showed that the physical education undergraduate students who participated in this study, partially know the concept of bullying [χ² (2) = 237,25; p <0.001]. The subjects did not present or incompletely presented the units that characterize the phenomenon. Thus, it is suggested that undergraduate physical education courses should broaden discussions and studies about bullying.

Severity of Psoriasis Associated with Metabolic Syndrome

2019 ◽  
Vol 70 (6) ◽  
pp. 2072-2079
Author(s):  
Ana Maria Alexandra Stanescu ◽  
Constantin Stefani ◽  
Ioana Veronica Grajdeanu ◽  
Bogdan Serban ◽  
Gheorghe Ciobanu ◽  
...  
Keyword(s):  
Metabolic Syndrome ◽  
Cardiovascular Diseases ◽  
Confidence Interval ◽  
Statistical Data ◽  
Severe Psoriasis ◽  
Negative Consequences ◽  
Chi Square ◽  
Statistical Software ◽  
Total Group ◽  
Chi Square Test

Although extensively studied, psoriasis still has negative consequences and is associated with multiple comorbidities, including metabolic syndrome. The severity of psoriasis seems to influence the occurrence of diagnostic criteria for metabolic syndrome. 208 patients diagnosed with psoriasis were identified, who were divided into lots depending on the severity of psoriasis, but also to the presence or absence of metabolic syndrome. Interpretation of statistical data was done with SPSS V21 (Statistical Package for Social Science) and MEDCALC (Statistical Software). The coexistence of severe psoriasis with metabolic syndrome increases the risk of developing cardiovascular diseases by 2.97 or greater, with a confidence interval of [1.60, 5.51], than that of patients with severe psoriasis who have no metabolic syndrome. The hypothesis was statistically confirmed by p = 0.003. Analyzing the total group with psoriasis by severity, we found the following distribution: from the total number of 208 patients, 39 (18.8%) had severe psoriasis, 83 (39.9%) moderate psoriasis and 86 (41.3%) mild psoriasis. The higher incidence of metabolic syndrome in patients with psoriasis is evidenced by the Pearson Chi-Square test, where p [0.001. The association of metabolic syndrome in patients with psoriasis is evident. The more severe the psoriasis, the more likely it is to develop metabolic syndrome.

scholarly journals Prevalence and risk factors of apical periodontitis in endodontically treated teeth in a selected population of Brazilian adults

2008 ◽  
Vol 19 (1) ◽  
pp. 34-39 ◽  
Author(s):  
Carlos Estrela ◽  
Cláudio Rodrigues Leles ◽  
Augusto César Braz Hollanda ◽  
Marcelo Sampaio Moura ◽  
Jesus Djalma Pécora
Keyword(s):  
Risk Factors ◽  
Confidence Intervals ◽  
Odds Ratio ◽  
Apical Periodontitis ◽  
Endodontic Treatment ◽  
Technical Quality ◽  
Endodontically Treated Teeth ◽  
Chi Square ◽  
Chi Square Test

The aim of this study was to assess the prevalence and risk factors of apical periodontitis in endodontically treated teeth in a selected population of Brazilian adults. A total of 1,372 periapical radiographs of endodontically treated teeth were analyzed based on the quality of root filling, status of coronal restoration and presence of posts associated with apical periodontitis (AP). Data were analyzed statistically using odds ratio, confidence intervals and chi-square test. The prevalence of AP with adequate endodontic treatment was low (16.5%). This percentage dropped to 12.1% in cases with adequate root filling and adequate coronal restoration. Teeth with adequate endodontic treatment and poor coronal restoration had an AP prevalence of 27.9%. AP increased to 71.7% in teeth with poor endodontic treatment associated with poor coronal restoration. When poor endodontic treatment was combined with adequate coronal restoration, AP prevalence was 61.8%. The prevalence of AP was low when associated with high technical quality of root canal treatment. Poor coronal restoration increased the risk of AP even when endodontic treatment was adequate (OR=2.80; 95%CI=1.87-4.22). The presence of intracanal posts had no influence on AP prevalence.

Vicinity of Schools, But Not of Residences, Seems to Regulate Physical and Sports Activities of 13-Year-Old Teenagers in a South European Setting

2017 ◽  
Vol 14 (1) ◽  
pp. 67-75 ◽  
Author(s):  
Alexandre Magalhães ◽  
Elisabete Ramos ◽  
Maria Fátima Pina
Keyword(s):  
Physical Activity ◽  
Odds Ratio ◽  
Parental Education ◽  
Sports Participation ◽  
Green Spaces ◽  
Chi Square ◽  
Physically Active ◽  
Urban Green Spaces ◽  
Chi Square Test ◽  
Sports Activities

Background:Proximity to urban green spaces (UGS) and open sports spaces (OSS) benefits health, promotes physical activity (PA) and sports practice (SP).Objective:Analyze the association between PA or SP according to distances between UGS or OSS and teenagers’ residences or schools.Methods:We evaluated 1333 (53.9% girls) teenagers (13 years old) living and studying in Porto, Portugal (EPITeen cohort). PA was classified as light or moderate/vigorous. Distances were the shortest routes from residences or schools to UGS/OSS, and classified in ≤250 m; >250 m to ≤500 m; >500 m to ≤750 m; >750 m. Chi-square test and chi-square for trends were used to compare proportions; associations were measured using logistic regression, through odds ratio and 95% confidence intervals, adjusting to BMI and parental education.Results:Regarding vicinity’ of schools, the prevalence of moderate/vigorous PA among boys, decreases as distances to OSS increases. For girls, the prevalence of sports decreases as distances to UGS increase. For boys, we found an association between moderate/vigorous PA and proximity to OSS in the vicinity of schools: considering ≤250 m as reference, the odds of moderate/vigorous PA is 0.20 (0.06–0.63) for >250 m to ≤500 m; 0.21 (0.07–0.61) for >500 m to ≤750 m and 0.19 (0.06–0.58) for >750 m.Conclusion:Vicinities of schools seem to influence teenagers to be more physically active and increase sports participation.

scholarly journals Prevalência de lesões em atletas de Brazilian jiu-jitsu: comparação entre diferentes níveis competitivos

2018 ◽  
Vol 20 (3) ◽  
pp. 280-289 ◽  
Author(s):  
Jorge Nelson da Silva Júnior ◽  
Rafael Lima Kons ◽  
Rodolfo André Dellagrana ◽  
Daniele Detanico
Keyword(s):  
Logistic Regression ◽  
Regression Analysis ◽  
Odds Ratio ◽  
Injury Severity ◽  
Chi Square ◽  
Risk Of Injury ◽  
Injury Occurrence ◽  
High Prevalence ◽  
Chi Square Test ◽  
Level Of Significance

This study aimed to identify types and sites of body injury, location of injury occurrence, and the mechanism and severity of injuries in novice and advanced Brazilian jiu-jitsu (BJJ) athletes. One hundred and eight BJJ athletes took part in this study separated in two groups: advanced (n = 53) and novice (n = 55). Athletes answered a questionnaire concerning regions of injury, locality of occurrence, injury severity and mechanism. Chi square test and a logistic regression analysis were used with the level of significance set at p < 0.05. The main results showed that shoulders and knees were the most injury location reported by novice and advanced athletes. Novice athletes demonstrated higher prevalence of injuries during training sessions (54.5%), whereas advanced athletes reported more injuries during competitions (66.1%). Significant associations between novice and advanced athletes were observed for major joints (p < 0.05). The odds ratio of having injury was 70-87% less for novice versus advanced athletes for the major joints cited. We concluded that BJJ athletes demonstrate high prevalence of injury mainly at knee and shoulder. While risk of injury appeared less in novice, the advanced demonstrated higher number of injuries during competitions as a consequence of injured joint keys. By contrast, novice athletes reported higher number of injuries associated with training sessions as a consequence of overuse.

scholarly journals Does tackle height influence offload success in rugby union? Analysis from the 2019 Rugby World Cup

2020 ◽  
pp. 174795412097366
Author(s):  
Joshua Amayo ◽  
Gregory J Tierney
Keyword(s):  
Confidence Interval ◽  
Odds Ratio ◽  
Body Position ◽  
Head Injuries ◽  
Rugby Union ◽  
The Body ◽  
Effective Strategy ◽  
World Cup ◽  
Cultural Shift ◽  
Rules Of The Game

Offloads are an effective way of breaking through a defensive line in rugby union. Higher tackle heights are considered an effective strategy to defend against offloads. However, in a bid to reduce head injuries, there is a cultural shift within the rules of the game to tackle lower down on the body. This study used match video analysis of ten games from the 2019 Rugby World Cup to investigate whether tackle height influences offload success for the ball carrier. Each legal tackle was categorised based on tackle height (e.g. shoulder), player body position (e.g. upright), tackle type (e.g. shoulder tackle), tackle direction (e.g. front on) and player position (e.g. tight forwards). For each characteristic, the Odds Ratio (OR) and 95% Confidence Interval (CI) were calculated based on offload success outcome. Tackles at the hip (OR = 1.81, 95% CI 1.10 to 2.96, p = 0.018) and upper leg (OR = 1.94, 95% CI 1.30 to 2.90, p = 0.001) had a greater propensity to result in offload success while tackles at shoulder height reduced offload success (OR = 0.09, 95% CI 0.04 to 0.22, p < 0.001). A bent at the waist tackler against an upright ball carrier had a greater propensity to result in offload success (OR = 1.74, 95% CI 1.19 to 2.54, p = 0.004). Tackling lower increased the chances of offload success for the ball carrier. The cultural shift towards lower tackle heights is likely to result in an increased number of offloads and it is up to players, coaches and defensive systems to be able to adapt to this.

scholarly journals Can tackle height influence tackle gainline success outcomes in elite level rugby union?

2017 ◽  
Vol 13 (3) ◽  
pp. 415-420 ◽  
Author(s):  
Gregory J Tierney ◽  
Ciaran K Simms
Keyword(s):  
Rugby Union ◽  
Lower Trunk ◽  
Centre Of Gravity ◽  
Elite Level

In rugby union, effective defensive play is highly technical and essential for game outcomes. Therefore, the aim of this study was to identify tackle heights, for given tackle types, that had a greater propensity to result in tackle gainline success for the tackler using match video evidence. The results indicated that tackling the upper legs of the ball carrier had a greater propensity to result in tackler success for both front-on (OR = 3.27; 95% CI = 1.34–7.95; p < 0.01) and side-on (OR = 5.31; 95% CI = 2.08–13.6; p < 0.01) arm tackles. For shoulder tackles, tackling at the lower trunk for front-on tackles (OR = 1.70; 95% CI = 1.04-2.79; p = 0.03) and the mid trunk for side-on tackles (OR = 3.11; 95% CI = 1.31–7.37; p < 0.01) had a greater propensity to result in tackler success. For smother tackles, tackling at the mid trunk had a greater propensity to result in tackler success during front-on (OR = 3.49; 95% CI = 1.81–6.74; p < 0.01) and side-on (OR = 5.11; 95% CI = 2.42–10.8; p < 0.01) tackles. The results highlight the importance of tackle height when coaching the tackle. The findings also suggest that technically proficient players can advance to more challenging contact techniques than aiming for the ball carrier’s centre of gravity.

scholarly journals Pesticide Exposure, Behavior of Farmer, and Activity of Cholinesterase Enzyme in Blood of Fertile Women Farmers

2015 ◽  
Vol 10 (2) ◽  
pp. 51 ◽  
Author(s):  
Deni Abdul Rahman ◽  
Zakianis Zakianis ◽  
Laila Fitria
Keyword(s):  
Women Workers ◽  
Odds Ratio ◽  
Cholinesterase Activity ◽  
Pesticide Exposure ◽  
Working Time ◽  
Women Farmers ◽  
Chi Square ◽  
Cross Sectional ◽  
Chi Square Test ◽  
Fertile Women

Fertile women farmers are risky of suffering decrease of cholinesterase activity due to pesticide exposure. This study aimed to analyze relation between pesticide exposure and the exposure agent to cholinesterase activity of fertile women workers at Kedunguter Village. This study used cross-sectional design on 94 fertile women farmers in 2015. Data was collected by observation, interview and cholinesterase test. Data analysis used chi-square test and analysis results showed a significant relation between pesticide types, working time, the use of gloves, hand-washing behavior to cholinesterase activity of fertile women farmers. Analysis results of this study showed that variable working time had the highest odds ratio (OR) score (OR = 14.072), so the variable working time is the most dominant variable in influencing cholinesterase enzyme. This study suggests that fertile women farmers should work not more than six hours per day.Pajanan Pestisida, Perilaku Petani, dan Aktivitas Enzim dalam Darah Petani Perempuan Usia SuburAbstrakPetani perempuan usia subur berisiko mengalami penurunan aktivitas kolinesterase akibat pajanan pestisida. Penelitian ini bertujuan untuk menganalisis hubungan antara pajanan pestisida dan perilaku pemajan terhadap aktivitas kolinesterase petani perempuan usia subur di Desa Kedunguter. Penelitian ini menggunakan desain potong lintang pada 94 petani perempuan usia subur tahun 2015. Pengumpulan data dilakukan secara observasi, wawancara, dan uji kolinesterase. Analisis data menggunakan uji kai kuadrat dan hasil analisis menunjukkan hubungan signifikan antara jenis pestisida, waktu kerja, penggunaan sarung tangan, perilaku mencuci tangan terhadap aktivitas kolinesterase petani perempuan usia subur. Hasil analisis pada penelitian ini menunjukkan bahwa variabel waktu kerja memiliki nilai odds ratio (OR) tertinggi, yaitu OR = 14,072 sehingga waktu kerja merupakan variabel paling dominan dalam memengaruhi enzim kolinesterase. Penelitian ini menyarankan agar petani perempuan usia subur tidak bekerja lebih dari enam jam per hari.

scholarly journals Effect of Streams of Science Studies in Eastern University, Sri Lanka on Graduation and Class of Degree

2019 ◽  
pp. 1-11
Author(s):  
K. A. N. K. Karunarathna
Keyword(s):  
Sri Lanka ◽  
Odds Ratio ◽  
Physical Science ◽  
Science Studies ◽  
Academic Community ◽  
Statistical Techniques ◽  
Science Students ◽  
Chi Square ◽  
Analysis Study ◽  
Chi Square Test

The ultimate reward of a degree program is the graduation. Class of the degree is also an aspect associated with the graduation. Both graduation and class of degree are the indicators of academic performances of a graduate. Academic achievement of a graduate is affected by many factors. Hence, graduation and class of degree of a graduate also may be dependent on the same factors. A belief is among academic community that obtaining a degree in some streams are rather difficult compared with some other. That is graduation is dependent on stream of study. This study was carried out to see whether graduation in science depends on the streams (biological, physical) of science studies in Eastern University, Sri Lanka. Further, effect of streams on class of degree also was aimed to investigate. This study was carried out by using all students in a batch, of size of 109 that recently completed studies from Faculty of Science, Eastern University, Sri Lanka. The analysis was based on number of students who qualified for the graduation and the class of degree. Statistical techniques such as proportion test, chi square test, odds ratio, relative risk, logistic regression and ANOVA test were used for the analysis. Study reveals that graduation and class of degree is dependent on streams of science studies. Proportions of physical science students who qualified for graduation and the lowest class of degree are less than the corresponding proportions of biological science stream students. Stream for higher education should be selected carefully and action should be taken accordingly to promote the stream/subjects that students omit. Further, factors behind this variation also might be investigated.

scholarly journals FAKTOR RISIKO KEPADATAN LALAT DAN SANITASI RUMAH DENGAN KEJADIAN DIARE DI KELURAHAN TANJUNG PINANG KOTA JAMBI TAHUN 2017

2018 ◽  
Vol 18 (1) ◽  
pp. 208
Author(s):  
Listautin Listautin
Keyword(s):  
Risk Factors ◽  
Risk Factor ◽  
Odds Ratio ◽  
Protective Factor ◽  
Health Department ◽  
Bivariate Analysis ◽  
Control Group ◽  
Case Group ◽  
Chi Square ◽  
Chi Square Test

Diarrhea is one of health problem in the world including Indonesia. The Morbidity survey undertaken by Sub-Directorate of diarrhea, Health Department from 2007 to 2010is improved. According to the data gained from Puskesmas in Tanjung Pinang Jambi in 2017, it is found out that 5 different districs in Tanjung Pinang are the district which has the highest rate of diarrhea sufferers. The aim of this study is to find out the risk factors of the flies density and the dwelling sanitation to the occurance of diarrhea in Tanjung Pinang Jambi in 2017. This study is quantitative study by using case control design. The sample of this study is 68 people who consists of 34 samples of case group and 34 samples of control group. This study is analyzed through univariate and bivariate analysis by using chi-square test. The instruments of this study are the reviewed document, ceklist, and the measurement through fly grill. The result of analysis are found out that toilet is the main risk factor for the occurance of diarrhea with odds ratio (OR) value is 3,519. Sewerage (SPAL) is one the risk factor of the diarrhea occurance with odds ratio (OR) value is 3,361. The waste is the other risk factors for the occurance of diarrhea with odds ratio (OR) value is 4,418. The flies density is the protective factor for the diarrhea occurance with odds ratio (OR) value is 0,773.Based on the result of this study, it can be concluded that it is necesarry to do the coorporation across program to optimize the noticing of information to public concerning on the importance of good dwelling sanitation and the low flies density in order to avoid from the occurance of diarrhea.Keyword : Diarrhea, Dwelling Sanitation, Flies Density

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