scholarly journals INTERNAL AND EXTERNAL VALIDITY OF THE MOVEMENT RANGE MEASUREMENT OF TOP SOCCER PLAYERS DURING THE MATCH MEASURED USING THE SOFTWARE SYSTEM TRACKING MOTION BIOIRC

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Radivoje Radaković ◽  
Milivoj Dopsaj ◽  
Nenad Filipović
Keyword(s):  
Regression Analysis ◽  
External Validity ◽  
Linear Regression Analysis ◽  
Soccer Players ◽  
Software System ◽  
National Team ◽  
Tracking Motion ◽  
Internal And External Validity ◽  
Very High ◽  
Movement Structure

The aim of this study is to determine the internal and external validity of measuring the range of motion of top players during a match measured using Software System Tracking Motion BIOIRC. The research was conducted on a sample of 63 players, who were recorded during 11 official matches from the following clubs or national teams: Red Star F.C. Belgrade; Radnicki 1923 F. C. Kragujevac; Partizan F. C. Belgrade; Bordoaux F. C. Bordoaux; senior national teams of Serbia and the National Team of Belgium. The variables provide estimates of the variability of the movement of top players during the game, followed by the software system Tracking motion (BioIRC, Kragujevac, Serbia). The parameters of the movement structure were analyzed by a descriptive statistical method, and the reliability of the monitored variables was examined using linear regression analysis. Based on the obtained results of player movement during the analyzed matches, it can be concluded that the internal and external validity of the range of player movement during the first and second half of the match is very high, both at the level of the whole team and the team lines.

scholarly journals Parent support contribution and peer conformity on learning motivation

2021 ◽  
Vol 7 (1) ◽  
pp. 53
Author(s):  
Anggi Fadilah ◽  
Marjohan Marjohan
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Parental Support ◽  
Linear Regression Analysis ◽  
Educational Process ◽  
Learning Motivation ◽  
Scale Model ◽  
High Category ◽  
Peer Conformity ◽  
Very High

One that affects the success of student learning is motivation. Less motivation to learn in students will affect the decrease in enthusiasm for learning and learning outcomes. There are several factors that influence the motivation of students in learning, including the support of parents and peers. This research aims to; (1) Describe the contribution of parental support, peer conformity and students' learning motivation, and (2) examine the contribution of parental support and peer conformity together on students' learning motivation. This study uses a quantitative approach with analytical descriptive method. The sample in this study were students of class VII and VIII, a total of 108 students. This research instrument uses a Likert scale model. The data were analyzed by descriptive statistical techniques, then using simple linear regression analysis and multiple linear regression analysis. The research findings show that in general; 1) students' parental support is in the high category, peer conformity of students is in the very high category, students' learning motivation is in the very high category, and 2) there is a strong and positive relationship between parental support and students' learning motivation. . This research has implications for the educational process in schools as a contribution to parental support and positive peer conformity which makes students have high learning motivation and are confident in their own abilities.

scholarly journals Poor Sleep Quality’s Association With Soccer Injuries: Preliminary Data

2020 ◽  
Vol 15 (5) ◽  
pp. 671-676
Author(s):  
Andressa Silva ◽  
Fernanda V. Narciso ◽  
Igor Soalheiro ◽  
Fernanda Viegas ◽  
Luísa S.N. Freitas ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Sleep Quality ◽  
Injury Severity ◽  
Linear Regression Analysis ◽  
Sleep Efficiency ◽  
Total Variance ◽  
Soccer Players ◽  
Poor Sleep ◽  
Injury Characteristics

Purpose: To investigate the relationship between sleep quality and quantity and injuries in elite soccer players and to compare sleep–wake variables and injury characteristics. Methods: The current investigation was a prospective cohort study of 23 elite male soccer players competing for 2 teams over 6 mo in the highest-level Brazilian competition. The players’ sleep behavior was monitored for 10 d in the preseason using self-reporting sleep diaries and wrist activity monitors to determine sleep duration and quality. Furthermore, injuries were recorded by the respective club’s medical teams into a specific database. Details of injuries recorded included the type, location, and severity of each injury. The results were expressed as descriptive statistics, and the significance level was set at 5%. The Mann–Whitney U test was performed to compare the sleep variables between groups. Spearman correlation coefficient and linear-regression analysis were used. Results: The results indicated a moderate negative correlation between sleep efficiency and particular injury characteristics, including absence time, injury severity, and amount of injuries. The linear-regression analysis indicated that 44% of the total variance in the number of injuries can be explained by sleep efficiency, 24% of the total variance in the absence time after injury (days) can be explained by sleep efficiency, and 47% of the total variance in the injury severity can be explained by sleep efficiency. Conclusions: Soccer players who exhibit lower sleep quality or nonrestorative sleep show associations with increased number and severity of musculoskeletal injuries.

scholarly journals Physiological potential of soybean seeds and its relationshipto electrical conductivity

2019 ◽  
Vol 41 (4) ◽  
pp. 407-415
Author(s):  
Jéssica Pavão do Prado ◽  
Francisco Carlos Krzyzanowski ◽  
Cibele Chalita Martins ◽  
Roberval Daiton Vieira
Keyword(s):  
Electrical Conductivity ◽  
Regression Analysis ◽  
Linear Regression Analysis ◽  
Accelerated Aging ◽  
Soybean Seeds ◽  
Seedling Vigor ◽  
Performance Potential ◽  
Initial Stage ◽  
Range Of Values ◽  
Very High

Abstract: Electrical conductivity (EC) stands out among vigor tests because of its capability of detecting damage in seeds in the initial stage, since EC is related to disorganization of the cell membrane. The aim of this paper was to study use of the EC test as an alternative for vigor evaluation in soybean seeds, verifying its relationship to different vigor tests and thus suggesting values and the range of values of electrical conductivity that indicate the performance potential of a seed lot in the field. Eleven seed lots from each of four soybean cultivars were used for this study. The moisture level was determined and the following tests were performed: electrical conductivity, germination, tetrazolium, accelerated aging, first germination count, seedling vigor classification and emergence of seedlings in the field and in sand. The EC test had a significant and negative correlation (p < 0.01) with all the tests performed. Linear regression analysis allowed separation of the seed lots into classifications of very high vigor (EC ≤ 70 μS.cm-1.g-1), high vigor (EC from 71 to 90 μS.cm-1.g-1), medium vigor (EC from 91 to 110 μS.cm-1.g-1) and low vigor (EC ≥ 111 μS.cm-1.g-1).

scholarly journals Hubungan N-Total dan C-Organik Sedimen Dengan Makrozoobentos di Perairan Pulau Payung, Banyuasin, Sumatera Selatan

2019 ◽  
Vol 22 (2) ◽  
pp. 147
Author(s):  
Beta Susanto Barus ◽  
Riris Aryawati ◽  
Wike Ayu Eka Putri ◽  
Ellis Nurjuliasti ◽  
Gusti Diansyah ◽  
...  
Keyword(s):  
Regression Analysis ◽  
Sampling Method ◽  
Positive Relationship ◽  
Linear Regression Analysis ◽  
Community Analysis ◽  
Organic Content ◽  
Mineralization Process ◽  
Quality Of Water ◽  
Very High

The quality of water was seen from the macrozoobenthos community analysis that lives in it. The purpose of this research is to know the relation N-total and C-organic in sediment with macrozoobenthos in Payung Island of Banyuasin Regency. This research uses purposive sampling method. Sampling and macrozoobenthic samples using Ekman grab. The types of macrozoobenthos found to consist of Bivalvia class (Nassarius distortus, Abra Soyae), Gastropoda (Septaria linatea, Epitonium pallasi), Polychaeta (Nereis sp) and Oligochaeta (Lumbriculus sp). The dominant macrozoobenthos composition is Nereis sp. The C-organic content in the waters sediments of Payung Island ranged from 10.52 to 17.92% (moderate to high criteria) and N-total ranged from 0.61 to 1.14% (high and very high criteria), C/N ratio ranged from 10 to 29. This indicates that sediment of Payung Island had undergone balance mineralization process and immobilization. The results of linear regression analysis show that C-organic and N-total have a positive relationship with the abundance of macrozoobenthos Kualitas suatu perairan dapat dilihat dari analisa komunitas makrozoobentos yang hidup di dalamnya. Tujuan penelitian ini adalah mengetahui hubungan antara kandungan N-total dan C-organik sedimen dengan makrozoobentos di Perairan Pulau Payung. Metodologi penelitian meliputi; pengambilan data parameter fisika kimia (suhu, salinitas, pH, dan DO). Pengambilan sampel sedimen dan makrozoobentos menggunakan ekman grab. Hasil dari penelitian ini, Jenis makrozoobentos yang ditemukan terdiri atas kelas Bivalvia (Nassarius distortus, Abra Soyae), Gastropoda (Septaria linatea, Epitonium pallasi), Polychaeta (Nereis sp) dan Oligochaeta (Lumbriculus sp). Komposisi makrozoobentos yang mendominasi yakni Nereis sp. Kandungan C-organik di sedimen perairan Pulau Payung berkisar 10,52-17,92% (kriteria sedang sampai tinggi) untuk N-total berkisar antara 0,61-1,14% (kategori tinggi dan sangat tinggi), sedangkan C/N rasio berkisar antara 10-29. Hal ini menunjukkan sedimen Pulau Payung telah mengalami proses mineralisasi dan imobilisasi seimbang. Hasil analisis regresi linear  menunjukkan C-organik dan N-total memiliki hubungan yang positif  dengan  kelimpahan makrozoobenthos.

TESTING ALGORITHMS AND PROGRAMS OF MULTIVARIATE STATISTICAL PROCEDURES—NECESSARY ASSUMPTION OF BUILDING EXPERT SYSTEMS

1989 ◽  
Vol 03 (01) ◽  
pp. 121-133 ◽  
Author(s):  
ENE-MARGIT TIIT
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Expert Systems ◽  
Linear Regression Analysis ◽  
New Method ◽  
Simple Linear Regression ◽  
Multivariate Statistical ◽  
Statistical Procedures ◽  
Testing Algorithms ◽  
Very High

Sometimes programs, for multivariate statistical procedures are included into expert systems. The requirements of accuracy, exactness and reliability for such programs are very high. In this paper a new method for testing algorithms and programs of multivariate statistical procedures—the so-called “exact samples method” is introduced. The programs of simple linear regression analysis from four most popular standard packages are tested and compared with the help of the new method.

scholarly journals Decision-Making Skills in Youth Basketball Players: Diagnostic and External Validation of a Video-Based Assessment

2021 ◽  
Vol 18 (5) ◽  
pp. 2331
Author(s):  
David Rösch ◽  
Florian Schultz ◽  
Oliver Höner
Keyword(s):  
Decision Making ◽  
Regression Analysis ◽  
Response Time ◽  
External Validity ◽  
Elite Athletes ◽  
Performance Data ◽  
Response Accuracy ◽  
Basketball Players ◽  
Performance Levels ◽  
National Team

Decision-making is a central skill of basketball players intending to excel individually and contribute to their teams’ success. The assessment of such skills is particularly challenging in complex team sports. To address this challenge, this study aimed to conceptualize a reliable and valid video-based decision-making assessment in youth basketball. The study sample comprised youth basketball players of the German U16 national team (n = 17; MAge = 16.01 ± 0.25 years) and students of a sports class (n = 17; MAge = 15.73 ± 0.35 years). Diagnostic validity was tested by determination of the performance levels according to response accuracy as well as response time in the assessment. External validity was examined by investigation of the correlation between the diagnostic results of the elite athletes and their real game performance data associated with passing skills. Logistic regression analysis revealed that the diagnostic results discriminate between performance levels (χ2(2) = 20.39, p < 0.001, Nagelkerke’s R2 = 0.60). Multiple regression analysis demonstrated a positive relationship between the diagnostic results and assists (F(2,10) = 4.82, p < 0.05; R2 = 0.49) as well as turnovers per game (F(2,10) = 5.23, p < 0.05; R2 = 0.51). However, no relationship was detected regarding the assist-turnover ratio. Further, response time discriminated within the elite athletes’ performance data but not between performance levels while for response accuracy the opposite is the case. The results confirm the diagnostic and external validity of the assessment and indicate its applicability to investigate decision-making skills in youth basketball.

scholarly journals PENGARUH KOMPETENSI TERHADAP PRESTASI KERJA KARYAWAN BAGIAN MARKETING PADA KOPERASI SERBA USAHA (KSU) SINAR JAYA MALANG

2018 ◽  
Vol 4 (1) ◽  
Author(s):  
Muhammad Budi Arifin
Keyword(s):  
Regression Analysis ◽  
Job Performance ◽  
Employee Performance ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Self Concept ◽  
Average Score ◽  
High Category ◽  
Scale Range ◽  
Very High

The purpose of this study was to determine the effect of competence on the part of employes job performance marketing division. This type of research is a quantitative study conducted on 32 employees of the marketing Koperasi Serba Usaha (KSU) Sinar Jaya Malang. Analysis tools used were a range of scales and multiple linear regression analysis. The results of research competence influence on employee performance, including the ability to know that the competence evidenced in the high category with an average score scale range is 100.67, competence knowledge in very high category with a score of 105, and competence in the category of self-concept is also very high with the average score scale range is 109.67. Employee performance in the high category, indicated by an average score of 93.33 scale range.Keywords: The Characteristics of Individuals, Competence and employee performance, Marketing.

scholarly journals THE IMPACT OF CERTAIN ANTHROPOMETRIC DIMENSIONS ON THE REALIZATION OF MOTOR ABILITIES IN KARATE ATHLETES

2021 ◽  
Vol 18 (1) ◽  
pp. 25-31
Author(s):  
Shkelzen Shalja ◽  
Visar Ganiu ◽  
Zorica Stankovska ◽  
Žarko Kostovski
Keyword(s):  
Regression Analysis ◽  
Linear Regression Analysis ◽  
National Team ◽  
Motor Abilities ◽  
Criterion System ◽  
Explosive Force ◽  
Motor Tests ◽  
The Impact ◽  
Criterion Variables ◽  
Karate Athletes

The research was conducted on 37 senior karate athletes’ seniors, males, at the age of 18 to 30, competitors of international rank. They are potential members of the Kosovo national team. Two test batteries were used on the sample of the respondents: 5 anthropometric variables as a predictor system and 13 basic motor variables as a criterion system. From previous studies it can be concluded that the longitudinal dimensionality of the skeleton and motor abilities, in particular, speed, explosive force, as well as coordination of movement play an important role in karate sport, especially for the competitors who participate in the discipline kumite. The research was conducted in order to determine the impact of the predictor system of variables on the success of the realization of the criterion variables. By applying Linear Regression Analysis, the connection of the predictors with certain motor tests was determined, i.e. their prediction was determined. Key words: Karate, Anthropometric, Motor.

scholarly journals The Effect of Trust, Goods Prices and Pocket Money on the Level of E-Commerce Transactions in UNNES Class 2017 Students

2021 ◽  
Vol 2 (1) ◽  
pp. 267-273
Author(s):  
Agung Steven
Keyword(s):  
Regression Analysis ◽  
Linear Regression ◽  
Survey Research ◽  
Linear Regression Analysis ◽  
High Category ◽  
Pocket Money ◽  
Very High

The purpose of this study was to determine the effect of trust, the price, and income on the level of e-commerce transactions in 2017 UNNES students. This research is a direct survey research. The study uses Linear Regression Analysis to determine the magnitude of the influence between X variables on Y. The results of this study indicate that of the 99 students who became respondents in this study as many as 31 students (31.31%) had e-commerce transaction rates that were included in the very high category, 57 students (48.48%) had e-commerce transaction rates that were included in the high category, 11 students (33.33%) had e-commerce transaction rates included in the moderate category.

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