Time Trials Predict the Competitive Performance Capacity of Junior Cross-Country Skiers

2014 ◽  
Vol 9 (1) ◽  
pp. 12-18 ◽  
Author(s):  
Magnus Carlsson ◽  
Tomas Carlsson ◽  
Daniel Hammarström ◽  
Christer Malm ◽  
Michail Tonkonogi
Keyword(s):  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Time Trial ◽  
Multiple Linear Regression Analysis ◽  
Competitive Performance ◽  
Performance Capacity ◽  
Double Poling ◽  
Cross Country ◽  
Multiple Regression Modeling ◽  
The Times

Purpose:This study investigated whether there is a correlation between time-trial performance and competitive performance capacity of male and female junior cross-country skiers and sought to explain sex-specific competitive performance capacity through multiple-regression modeling.Methods:The International Ski Federation’s (FIS) junior ranking points for distance (FISdist) and sprint (FISsprint) competitions were used as performance parameters. A total of 38 elite junior (age 18.5 ± 1.0 y) cross-country skiers (24 men and 14 women) completed 3 time-trial tests: a 3-km level-running time trial (TTRun), a 2-km moderate uphill (1.2° slope) roller-skiing time trial using the double-poling technique (TTDP), and a 2-km uphill (2.8° slope) roller-skiing time trial using the diagonal-stride technique (TTDiag). The correlations were investigated using Pearson correlation analysis, and regression models were created using multiple-linear-regression analysis.Results:For men, FISsprint and FISdist were correlated with the times for TTRun, TTDP, and TTDiag (all P < .001). For women, FISsprint was correlated with the times for TTRun (P < .05), TTDP (P < .01), and TTDiag (P < .01), whereas FISdist was correlated only with the times for TTDP (P < .01) and TTDiag (P < .05). The models developed for FISdist and FISsprint explained 73.9–82.3% of the variance in the performance capacity of male junior cross-country skiers. No statistically valid regression model was found for the women.Conclusions:Running and roller-skiing time trials are useful tests for accurately predicting the performance capacity of junior cross-country skiers.

scholarly journals EXAMINATION OF THE ATTITUDES OF THE STUDENTS OF THE SCHOOL OF PHYSICAL EDUCATION AND SPORTS TOWARDS THE EDUTAINMENT APPROACH

2019 ◽  
Vol 7 (3) ◽  
pp. 56-63
Author(s):  
Nalan Aksakal
Keyword(s):  
Physical Education ◽  
Learning Effect ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Correlation Coefficients ◽  
Multiple Linear Regression Analysis ◽  
Perceived Learning ◽  
Meaningful Relationship ◽  
Medium Level ◽  
Students Attitudes

The aim of this study is to determine School of Physical Education and Sports students’ attitudes background about edutainment approach. A total of 338 students participated in the study; 118 female and 220 male. The study used Attitude Towards Edutainment Scale for data collection purposes. The data obtained were analyzed through descriptive statistics, Explanatory Factor Analysis, Correlation Analysis and Multiple Linear Regression Analysis by using SPSS 18 software. According to the findings the relationship among attitude factors regarding edutainment, correlations among factors range between ,51 and ,63. The lowest correlation value (0.51) was calculated for “perceived learning effect” and “drama” and “practice” factor while the highest correlation (0.63) for “expression and material and drama and practice” factors. Pearson correlation coefficients imply a medium level correlation among all factors. According to standardized beta (β) values in regression model, which shows the correlation among variables, “perceived learning effect” factor has the strongest effect on all recommendation and satisfaction-which are the dependent variables. In conclusion, the study found a meaningful relationship between edutainment approach and “recommendation” and edutainment approach and “satisfaction” It was also found that “satisfaction” has a strong effect on recommendation variable.

scholarly journals Association of Serum Adropin Concentrations with Diabetic Nephropathy

2016 ◽  
Vol 2016 ◽  
pp. 1-5 ◽  
Author(s):  
Wenchao Hu ◽  
Li Chen
Keyword(s):  
Regression Analysis ◽  
Diabetic Nephropathy ◽  
Energy Homeostasis ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Regulatory Protein ◽  
Multiple Linear Regression Analysis ◽  
Lower Serum ◽  
Urine Albumin

Objective. Adropin is a newly identified regulatory protein encoded by the Enho gene and is critically involved in energy homeostasis and insulin sensitivity. This study aims to determine the correlation of serum adropin concentrations with diabetic nephropathy (DN).Methods. This study consisted of 245 patients with type 2 diabetes mellitus (T2DM) and 81 healthy subjects. Then T2DM patients were divided into normoalbuminuria, microalbuminuria, and macroalbuminuria subgroups based on urine albumin to creatinine ratio (ACR).Results. T2DM patients showed significantly lower serum adropin concentrations than those in the controls. T2DM patients with macroalbuminuria had significantly decreased serum adropin concentrations compared with the other three groups. In addition, T2DM patients with microalbuminuria showed lower serum adropin concentrations than those in patients with normoalbuminuria. Logistic regression analysis showed that serum adropin was correlated with decreased risk of developing T2DM and DN. Pearson correlation analysis indicated that serum adropin was negatively correlated with body mass index (BMI), blood urea nitrogen, creatinine, and ACR and positively correlated with glomerular filtration rate. Furthermore, multiple linear regression analysis showed that BMI and ACR were negatively correlated with serum adropin levels.Conclusion. Serum adropin concentrations are negatively associated with renal function. Adropin may be implicated in the pathogenesis of DN development.

scholarly journals PENGARUH KUALITAS PENGELOLA KEUANGAN DAN SISTEM PENGENDALIAN INTERN PEMERINTAH (SPIP) TERHADAP EFEKTIVITAS PENGELOLAAN KEUANGAN DAERAH PADA INSPEKTORAT PEMERINTAH KOTA MANADO

2017 ◽  
Vol 12 (01) ◽  
Author(s):  
Sinambow Gloria Injilita Bulan ◽  
Jantje J. Tinangon ◽  
Lidia Mawikere
Keyword(s):  
Control System ◽  
Internal Control ◽  
Financial Management ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Government Control ◽  
Internal Control System ◽  
The Government

The government's internal control system, in achieving the effectiveness of regional financial management, is required by the government apparatus (financial manager), and should be able to provide adequate assurance. This study aims to determine the effect of the quality of financial managers on the effectiveness of local financial management and the influence of internal control systems of government on the effectiveness of local financial management. This study uses the method of Pearson Correlation. In this study did not use the sample but took the population of all auditors including also functional apparatus as many as 45 people. Data were analyzed using multiple linear regression analysis with SPSS. The result of the research shows that there is a significant influence between the quality of financial manager and the government's internal control system on the effectiveness of local financial management.Keywords: quality of financial manager, internal government control system, effectiveness of regional financial management

scholarly journals The Effect of Smoking and Respiration of Carbon Monoxide among Active Smokers in Palembang, Indonesia

2021 ◽  
Vol 16 (2) ◽  
Author(s):  
Rico Januar Sitorus ◽  
Imelda Gernauli Purba ◽  
Merry Natalia ◽  
Kraichat Tantrakarnapa
Keyword(s):  
Carbon Monoxide ◽  
Linear Regression ◽  
Multiple Linear Regression ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
The Body ◽  
Cross Sectional ◽  
Independent Variables ◽  
Cross Sectional Design

Smoking leads to disease and disability as well as harm nearly every organ of the body. Furthermore, smoking of tobacco is known to cause pulmonary dysfunction and lead to complications, pain, or even death. This study aims to measure the risk factors for the respiration of carbon monoxide among smokers. A cross-sectional design was implemented by involving 156 smokers in Karyajaya Subdistrict, Palembang City. The dependent variable was carbon monoxide levels (ppm), while the independent variables were smoking frequency, duration, and the last period of smoking. The carbon monoxide levels (ppm) measured with a PiCO + Smokerlyzer® device from Bedfont Scientific Limited were the research tool and the independent variables of the questionnaire. The pearson Correlation and multiple linear regression were used for the analysis. The results of the multiple linear regression analysis revealed that smoking duration assessment is related to carbon monoxide respiration after controlling smoking frequency, the last period of smoking, and the distance of residence to sources of exposure. The smoker's respiration of carbon monoxide level was 72.5% influenced by the duration, frequency, last period of smoking, and distance of residence to sources of exposure. Reducing the frequency of smoking and stopping may prevent and control carbon monoxide respiration.

scholarly journals Physical Fitness and Performance in Talented & Untalented Young Chinese Soccer Players

Healthcare ◽  
2022 ◽  
Vol 10 (1) ◽  
pp. 98
Author(s):  
Alfredo Irurtia ◽  
Víctor M. Torres-Mestre ◽  
Álex Cebrián-Ponce ◽  
Marta Carrasco-Marginet ◽  
Albert Altarriba-Bartés ◽  
...  
Keyword(s):  
Physical Fitness ◽  
Racial Differences ◽  
Body Mass ◽  
Linear Regression Analysis ◽  
Body Height ◽  
Multiple Linear Regression Analysis ◽  
Step Test ◽  
Competitive Performance ◽  
Youth Soccer ◽  
And Performance

Sports performance is a complex process that involves many factors, including ethnic and racial differences. China’s youth soccer is in a process of constant development, although information about the characteristics of its players and their methodological systems is scarce. The aim of this retrospective study was to characterize the physical fitness and the competitive performance of 722 Chinese players of three sports categories (8.0–9.9, 10.0–11.9 and 12.0–13.9 years), who were classified by their coaches as talented (n = 204) or untalented (n = 518). Players were assessed for anthropometry (body height, body mass, body mass index), lung capacity (Forced Vital Capacity), jumping performance (Squat Jump, Countermovement Jump and Abalakov tests), sprinting performance (10 m and 30 m Sprint tests), agility performance (Repeated Side-Step test) and flexibility (Sit & Reach test). A descriptive, comparative, correlational and multivariate analysis was performed. Competitive ranking was created in order to act as dependent variable in multiple linear regression analysis. Results indicate that Chinese players classified as talented have better motor performance than untalented ones. However, these differences are neither related nor determine the competitive performance of one group or the other.

scholarly journals PENGARUH PELATIHAN DAN MOTIVASI KERJA TERHADAP KINERJA KARYAWAN PT BANK BJB KANTOR CABANG SUCI BANDUNG

2018 ◽  
Vol 9 (1) ◽  
Author(s):  
Roro Watie Rachmawati
Keyword(s):  
Work Motivation ◽  
Employee Performance ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Sampling Technique ◽  
Strong Relationship ◽  
Multiple Linear Regression Analysis ◽  
Coefficient Of Determination ◽  
Training Motivation ◽  
And Performance

<p><em>In this study a problem that occurs is the implementation of training and motivation are ineffective for employees in PT Bank BJB Office Bandung, so that they are less than optimal performance. This study aimed to test the Training and Work Motivation Effect on Employee Performance in PT Bank BJB Office Bandung. The population in this study is that all employees at PT Bank BJB which amounted to 51 employees. The sampling technique used is census sampling technique, the sample set as many as 51 employees. This study uses a quantitative approach, the data for this study were obtained through questionnaires (questionnaire) which has been filled by the respondents who have been determined. Data analysis method used is the method of multiple linear regression analysis.</em></p><p><em>The results of the analysis of pearson correlation 0.794 or 79.4% which shows that the correlation between training and work motivation and performance of employees are in a strong relationship level, means that training and motivation has a positive and significant relationship to the performance variables. While the coefficient of determination 0.631 or 63.1%, meaning that training and motivation has contributed 63.1% of the employee's performance, while the remaining 36.7% is influenced by other variables which is not examined.</em><br /><em> </em><br /><em>Keywords: Training, Motivation, Performance Employees</em></p>this HTML class. Value is In this st

The Influence of Compensation, Motivation, and Commitment to Teacher Performance At Junior High School Somba Opu Sungguminasa, Gowa District

2019 ◽  
Vol 1 (1) ◽  
pp. 43-52
Author(s):  
Muhtazib Muhtazib
Keyword(s):  
High School ◽  
High School Teachers ◽  
Junior High School ◽  
Junior High ◽  
Teacher Performance ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
Junior High School Teachers ◽  
Study Population ◽  
The Times

Student achievement can be determined by the performance of professional teachers, so teachers must be able to improve their professional in responding to the challenges of the times so rapidly. The purpose of this study was to determine and analyze the effect of compensation, motivation, and commitment to teacher performance at Junior High School Somba Opu Sungguminasa, Gowa District, and to find out the dominant factors influencing. The study population was all teachers at at Junior High School Somba Opu Sungguminasa, Gowa District amounting to 32 people. Because the population is small or less than 100 people, the entire population is sampled (100% sample). The analytical method used is multiple linear regression analysis. The results showed that simultaneously and partially all independent variables consisting of compensation, motivation, and commitment had a positive and significant effect on the performance of Somba Opu Sungguminasa Junior High School teachers, Gowa District, where compensation was the most significant factor influencing.

scholarly journals The Influence of Pole Length on Performance, O2 Cost, and Kinematics in Double Poling

2017 ◽  
Vol 12 (2) ◽  
pp. 211-217 ◽  
Author(s):  
Thomas Losnegard ◽  
Håvard Myklebust ◽  
Øyvind Skattebo ◽  
Hans Kristian Stadheim ◽  
Øyvind Sandbakk ◽  
...  
Keyword(s):  
Center Of Mass ◽  
Body Height ◽  
Time Trial ◽  
Test Protocol ◽  
Warm Up ◽  
Vertical Range ◽  
Double Poling ◽  
Cross Country Skiing ◽  
Cross Country ◽  
Identical Test

Purpose:In the double-poling (DP) cross-country-skiing technique, propulsive forces are transferred solely through the poles. The aim of the current study was to investigate how pole length influences DP performance, O2 cost, and kinematics during treadmill roller skiing.Methods:Nine male competitive cross-country skiers (24 ± 3 y, 180 ± 5 cm, 72 ± 5 kg, VO2max running 76 ± 6 mL · kg–1 · min–1) completed 2 identical test protocols using self-selected (84% ± 1% of body height) and long poles (self-selected + 7.5 cm; 88% ± 1% of body height) in a counterbalanced fashion. Each test protocol included a 5-min warm-up (2.5 m/s; 2.5°) and three 5-min submaximal sessions (3.0, 3.5, and 4.0 m/s; 2.5°) for assessment of O2 cost, followed by a selfpaced 1000-m time trial (~3 min, >5.0 m/s; 2.5°). Temporal patterns and kinematics were assessed using accelerometers and 2D video.Results:Long poles reduced 1000-m time (mean ± 90% confidence interval; –1.0% ± 0.7%, P = .054) and submaximal O2 cost (–2.7% ± 1.0%, P = .002) compared with self-selected poles. The center-of-mass (CoM) vertical range of displacement tended to be smaller for long than for self-selected poles (23.3 ± 3.0 vs 24.3 ± 3.0 cm, P = .07). Cycle and reposition time did not differ between pole lengths at any speeds tested, whereas poling time tended to be shorter for self-selected than for long poles at the lower speeds (≤3.5 m/s, P ≤ .10) but not at the higher speeds (≥4.0 m/s, P ≥ .23).Conclusions:DP 1000-m time, submaximal O2 cost, and CoM vertical range of displacement were reduced in competitive cross-country skiers using poles 7.5 cm longer than self-selected ones.

scholarly journals The Association of Fasting C-peptide with Corneal Neuropathy in Patients with Type 2 Diabetes

2020 ◽  
Vol 2020 ◽  
pp. 1-8
Author(s):  
Anju Zuo ◽  
Chuan Wang ◽  
Lili Li ◽  
Jingru Qu ◽  
Juan Cao ◽  
...  
Keyword(s):  
Correlation Analysis ◽  
Pearson Correlation ◽  
Linear Regression Analysis ◽  
Multiple Linear Regression Analysis ◽  
C Peptide ◽  
Duration Of Diabetes ◽  
Corneal Nerve ◽  
And Gender ◽  
The Relationship

Purpose. Damage to corneal nerve fibers has been demonstrated in people with type 2 diabetes mellitus (T2DM) that further progresses with increasing severity of diabetic peripheral neuropathy. However, the role of C-peptide in corneal nerve damage has not been reported in T2DM. The present study investigated the relationship of fasting C-peptide levels with corneal neuropathy evaluated by corneal confocal microscopy (CCM) in patients with T2DM. Methods. 160 T2DM patients (72 females) aged 34-78 with duration ranging from 0 to 40 years underwent CCM to measure corneal nerve fiber length (CNFL), corneal nerve fiber density (CNFD), and corneal nerve branch density (CNBD). Pearson correlation analysis and multiple linear regression analysis were used to explore the association of fasting C-peptide levels with corneal nerve parameters. Partial correlation analysis (adjusted for age and gender) was also conducted to analyze the correlation of metabolic indexes with these three corneal nerve parameters. The relationship between fasting C-peptide levels and duration of diabetes was also explored by Pearson correlation analysis. Results. With an increase in fasting C-peptide levels, the values of CNFL, CNFD, and CNBD also showed a corresponding trend for an increase. Partial correlation analysis revealed that fasting C-peptide levels were positively associated with CNFL ( r = 0.245 , P = 0.002 ), CNFD ( r = 0.180 , P = 0.024 ), and CNBD ( r = 0.214 , P = 0.008 ) after adjusting for age and gender. Using multiple linear regression analysis, fasting C-peptide levels were also closely associated with CNFL ( P = 0.047 ) and CNBD ( P = 0.038 ) after multiple adjustments. However, this association disappeared after further adjusting for duration of diabetes. Further analysis indicated that fasting C-peptide levels declined with duration of diabetes ( r = − 0.267 , P = 0.001 ). Conclusions. C-peptide was closely associated with corneal neuropathy and disease duration in T2DM. C-peptide levels might be both an indicator of beta-cell function and a marker of disease severity (such as diabetic corneal neuropathy) and duration.

Anaerobic Work Capacity’s Contribution to 5-km-Race Performance in Female Runners

2012 ◽  
Vol 7 (2) ◽  
pp. 170-174 ◽  
Author(s):  
Cory W. Baumann ◽  
Jeffrey C. Rupp ◽  
Christopher P. Ingalls ◽  
J. Andrew Doyle
Keyword(s):  
Ventilatory Threshold ◽  
Linear Regression Analysis ◽  
Time Trial ◽  
Multiple Linear Regression Analysis ◽  
Running Economy ◽  
Mean Velocity ◽  
Anaerobic Energy ◽  
Anaerobic Work ◽  
The Mean ◽  
Race Performance

Purpose:The purpose of this study was to examine the relationship between anaerobic characteristics and 5-km-race performance in trained female cross-country runners (N = 13).Methods:The runners performed 50-m sprints and a 5-km time trial on an outdoor 400-m track and maximal anaerobic (MART) and aerobic running tests on a motorized treadmill. Anaerobic characteristics were determined by the mean velocity of the 50-m sprint (v50m) and the peak velocity in the MART (vMART). The aerobic characteristics were obtained during the aerobic treadmill test and included maximal oxygen uptake (VO2max), running economy, and ventilatory threshold (VT).Results:Both the vMART (r = .69, P < .01) and VO2max (r = .80, P < .01) correlated with the mean velocity of the 5-km (v5km). A multiple-linear-regression analysis revealed that the combination of VO2max, vMART, and VT explained 81% (R2 = .81, P < .001) of the variation seen in the v5km. The vMART accounted for 31% of the total shared variance, while the combination of VO2max and VT explained the remaining 50%.Conclusions:These results suggest that among trained female runners who are relatively matched, anaerobic energy production can effectively discriminate the v5km and explain a significant amount of the variation seen in 5-km-race performance.

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