Does the Twenty Meter Shuttle-Run Test Elicit Maximal Effort in 11- to 16-Year-Olds?

2009 ◽  
Vol 21 (1) ◽  
pp. 55-62 ◽  
Author(s):  
Christine Voss ◽  
Gavin Sandercock
Keyword(s):  
Confidence Interval ◽  
Significant Relationship ◽  
Test Performance ◽  
Coefficient Of Determination ◽  
Laboratory Studies ◽  
Naturalistic Setting ◽  
Run Test ◽  
The Relationship ◽  
Maximal Effort ◽  
Shuttle Run

The aim of this study was to determine if maximal effort, evidenced by peak HR was attained during the 20m shuttle-run test in a naturalistic setting. Shuttle-run test performance and peak HR were measured in 208 volunteers (11–16 years). Peak HR was 196 (95% confidence interval (C.I.) 194–198 bpm). The relationship between test performance and peak HR was assessed by regression. There was a weak, but statistically significant relationship between test performance and peak HR (R2 = .029, p = .029) but with such a low coefficient of determination (less than 5% criterion), poor performances were not associated with low peak HR values or underestimation of maximal performance. Peak HR values (196 bpm) were higher than cited criterion values (185 bpm) for maximal effort in laboratory studies. In a naturalistic setting, the 20m shuttle-run test elicits a maximal effort in most children.

scholarly journals Analisis Deskriptif Tentang Hubungan Kemampuan Siswa Melakukan Tes Harvard terhadap Kecepatan Lari Jarak 400 Meter pada Siswa Putra Kelas VII SMP Negeri 1 Tanjungsari

2016 ◽  
Vol 2 (2) ◽  
pp. 52-62
Author(s):  
Anggi Setia Lengkana
Keyword(s):  
Junior High School ◽  
Significant Relationship ◽  
Research Process ◽  
Male Students ◽  
Coefficient Of Determination ◽  
Running Speed ◽  
Research Hypothesis ◽  
Leg Muscles ◽  
Run Test ◽  
The Relationship

In this study the authors sought one form of test that has a relationship with short-distance running speeds of 400 meters. One form of test that is predicted to have a relationship to 400 meters running speed is the Harvard step up test. The test aims to measure the level of efficiency of heart, lung function, and endurance of leg muscles. This is when associated with 400 meters running speed has a significant relationship, because when performing 400 meters running, the leg muscles must have endurance speed and also supported by maximum pulmonary heart work. Based on this explanation, the writer is interested in proving it through a research process that will be tried on junior high school male students. The author formulates the problem, namely how much is the relationship between the ability of students to do the Harvard test on the running speed of 400 meters. The research hypothesis was formulated that the Harvard test had a significant relationship to 400 meters running speed. To prove this hypothesis, the author uses the descriptive method of Population and the sample used as the unit of analysis is all male students of class VII of SMP Negeri 1 Tanjungsari, amounting to 143 people. Samples were taken as many as 30 students. The instrument used in the form of a Harvard step up test and 400 meters run test. Referring to the results of the data processing of the results of tests conducted in class VII of SMP Negeri 1 Tanjungsari, conclusions can be drawn as follows: (1) Harvard test has a significant relationship to the speed of running distance of 400 meters in male students of class VII of SMP Negeri 1 Tanjungsari. This is proven by testing the hypothesis by comparing the value of t arithmetic with t table, where t arithmetic> t table = 8,491> 2.763, so that the hypothesis testing shows significant results. (2) The magnitude of the correlation coefficient between the ability of Harvard tests with the results of a 400-meter run test, the correlation (r) shows the value of 0.85, so that the magnitude of the coefficient of determination (KD) is 72.25%. Thus the null hypothesis is rejected (H0) and the research hypothesis is accepted (Ha)

scholarly journals Hubungan Keseimbangan dan Koordinasi Mata Kaki Terhadap Kemampuan Menggiring Bola dalam Permainan Futsal Klub Karsa Utama Putri Wajo

2021 ◽  
Vol 8 (1) ◽  
pp. 67
Author(s):  
Muhammad Hasbillah ◽  
Herman Herman
Keyword(s):  
Regression Analysis ◽  
Significant Relationship ◽  
Descriptive Analysis ◽  
Sampling Technique ◽  
Total Sample ◽  
Coefficient Of Determination ◽  
Correlational Research ◽  
Analysis Technique ◽  
Independent Variable ◽  
The Relationship

This research aims to determine the relationship between balanced and the ability to dribble, the relationship between eye-foot coordination and the ability to dribble, and the relationship between balanced and eye-foot coordination on the ability todribble in futsal game Karsa Utama Putri Wajo’s club. The research was correlational research, with the independent variable was balanced and eye-foot coordination, while the dependent variable was the ability to dribble. The population of theresearch was Karsa Utama Putri Wajo's club players and the sampling technique used was total sampling technique with the total sample was 25 players. The analysis technique used was descriptive analysis, correlation analysis, regression analysis. The results showed that 1)There was a significant relationship between balanced and the ability to dribble in Karsa Utama Putri Wajo's club players with a correlation value (r) = 0,738. 2) There was asignificant relationship between eye-foot coordination on the ability to dribble in Karsa Utama Putri Wajo's club players with a correlation value (r) = 0,553. 3) There was asignificant relationship between balanced and eye-foot coordination on the ability to dribble in Karsa Utama Putri Wajo's club player swith a correlation value (r)=0.823,and a coefficient of determination (R2) = 0.677 or equal to 67,7%. Thus, it can be concluded that there is a significant relationship between balanced and coordination of the ankle son the ability to dribble in futsal game of Karsa Utama Putri Wajo's club.

scholarly journals Development of multistage 10-m shuttle run test for VO2max estimation in healthy adults

2021 ◽  
Keyword(s):  
Cross Validation ◽  
Age Groups ◽  
Healthy Adults ◽  
Coefficient Of Determination ◽  
Validation Test ◽  
Uniform Distributions ◽  
Gender And Age ◽  
Run Test ◽  
Shuttle Run ◽  
Spatial Limitation

Background and objective: The disadvantage of the traditional 20-m multistage shuttle run test (MST) is that it requires a long space for measurements and does not include various age groups to develop the test. Therefore, we developed a new MST to improve the spatial limitation by reducing the measurement to a 10-m distance and to resolve the bias via uniform distributions of gender and age. Material and methods: Study subjects included 120 healthy adults (60 males and 60 females) aged 20 to 50 years. All subjects performed a graded maximal exercise test (GXT) and a 10-m MST at five-day intervals. We developed a regression model using 70% of the subject's data and performed a cross-validation test using 30% of the data. Results: The male regression model's coefficient of determination (R2) was 58.8%, and the standard error of estimation (SEE) was 4.17 mL/kg/min. The female regression model's R2 was 69.2%, and the SEE was 3.39 mL/kg/min. The 10-m MST showed a high correlation with GXT on the VO2max (males: 0.816; females: 0.821). In the cross-validation test for the developed regression models, the male's SEE was 4.38 mL/kg/min, and the female's SEE was 4.56 mL/kg/min. Conclusion: Thus, the 10-m MST is an accurate and valid method for estimating the VO2max. Therefore, the 10-m MST developed by us can be used when the existing 20-m MST cannot be used due to spatial limitations and can be applied to both men and women in their 20s and 50s.

Validation of Several Methods of Estimating Maximal Oxygen Uptake in Young Men

1998 ◽  
Vol 87 (2) ◽  
pp. 575-584 ◽  
Author(s):  
Lars McNaughton ◽  
Phil Hall ◽  
Dean Cooley
Keyword(s):  
Young Men ◽  
Gas Analysis ◽  
Accurate Predictor ◽  
Post Hoc Analysis ◽  
Significant Difference ◽  
Run Test ◽  
Post Hoc ◽  
The Relationship ◽  
Treadmill Protocol ◽  
Shuttle Run

The purpose of this study was to identify the most accurate predictor of VO2max from a variety of running tests. 32 young adult male undergraduates of (mean ± SE) age 20.14 ± 0.34 yr., height 179.4 ± 1.8 cm, weight 73.7±2.8 kg, and VO2max 57.89 ± 1.1 ml · kg−1 · min.−1 were randomly tested on four different predictive VO2max running tests to assess their actual VO2max, based on a continuous, progressive treadmill protocol and obtained via gas analysis. The four tests consisted of a treadmill jogging test, 1.5 mile run, Cooper's 12-min. run, and the 20-m progressive shuttle-run test. An analysis of variance applied to means indicated significance. Post hoc analysis between the means with correction by Scheffé showed significant difference between the predictive submaximal treadmill jogging test and the 12-min. run but no other difieren .es. The strength of the relationship between predictive tests and VO2max varied, wit1 the 12-min run having the highest correlation of .87, followed by the 1.5 mile rur .87, 20-m progressive shuttle run .82, and the treadmill jogging test .50. The 12-min. run had the highest correlation of all tests with VO2max in young men, with active to trained levels of fitness. The 1.5 mile and 20-m shuttle run also provided accurate predictions of VO2max and so should be used for an accurate prediction of young men's VO2max.

scholarly journals The Relationship Between Body Compositions of Taekwondo Practitioners Aged 14-16 and Their Aerobic Endurance

2021 ◽  
Vol 15 (10) ◽  
pp. 3438-3440
Author(s):  
Duygu Sevinç Yilmaz ◽  
Burakhan Aydemir
Keyword(s):  
Body Composition ◽  
Aerobic Capacity ◽  
Pearson Correlation ◽  
The Body ◽  
Performance Criteria ◽  
Fat Percentage ◽  
Run Test ◽  
Body Compositions ◽  
The Relationship ◽  
Shuttle Run

Background: Taekwondo (TKD) is a combat sport practiced by millions of children, young people and adults around the world.1 It is an Olympic sports branch with many complex features and constant interaction between two opponents in the competitions, where attack-contact techniques are applied quickly, attacking techniques are strong2,3 but also have good flexibility. Aim: This study has been carried out to identify the relationship between body composition of taekwondo practitioners aged 14-16 who regularly practice taekwondo, and their aerobic endurance. Methods: A total of 33 registered taekwondo practitioners (17 male, 16 female) participated to this study on a voluntary basis. The age, height, weight, and body mass index of all the athletes who took part in the study are 14.96±0.80 years, 162.59±11.59 cm, 50.97±7.51 kg and 19.14±2.39 kg/m² respectively. The group who participated to the study practice taekwondo two days a week, for 2 hours each, for a period of 1.5 years. The aerobic endurance of taekwondo athletes was measured by 20-meter-long Shuttle Run Test. In order to measure the body composition values of the athletes, measurements of skinfold thickness (biceps, triceps, subscapula, subrailiac) were carried out. In calculating the body density, the formula of Durning-Womersley was used; and in calculating the body fat percentage, the formula of Siri was employed. Data was evaluated by SPSS 22.0. The normality distribution of the data obtained at the end of the study was evaluated by Kolmogorov-Smirnov test and it was observed that the data was in line with normal distribution. Following the normalcy assessment, the relationship between body compositions and aerobic endurances was determined by Pearson Correlation analysis. Results: It is possible to say that the body composition values of taekwondo practitioners aged 14-16 have positive and negative impact on their aerobic endurance. It is observed that as the values 20-meter Shuttle Run test increases, fat percentage of athletes decreases. Conclusion: It is concluded that the findings obtained from the research results support the literature, and that body composition and aerobic capacity are important as performance criteria in many studies. It is thought that it may be beneficial for the athletes to perform aerobic endurance exercises during the annual training periods to perform the necessary practices to optimize their body composition and improve their aerobic capacity. Keywords: Taekwondo, Body Composition, Aerobic Endurance

scholarly journals أثر استيعاب القواعد النحوية والمفردات على قدرة الترجمة لدى طلبة الجامعة الإسلامية الحكومية قدس

2019 ◽  
Vol 3 (2) ◽  
pp. 56
Author(s):  
Azwar Annas
Keyword(s):  
Correlation Coefficient ◽  
Significant Relationship ◽  
Correlation Study ◽  
Quantitative Approach ◽  
Coefficient Of Determination ◽  
Is Research ◽  
Relationship Coefficient ◽  
Relationship Of ◽  
The Relationship ◽  
Existing Data

This study sought to determine the influence of grammar and vocabularies mastery on the  students ability of  translate in the Kudus Islamic University. The approach articles used in this study is a quantitative approach because researchers wanted to test the hypothesis that shaped assosiative hypothesis (is the hypothesis that asks a relationship between two or more variables). This approach is said to be a quantitative approach because the existing data in the form of numbers and statistics used in analyzing it. Meanwhile, the method used is research Correlation, because the correlation study researchers wanted to uncover the relationship of variations in the correlation coefficient. The results of this research are: 1) the effect of gramatikan mastery to capability students of translate in the Kudus Islamic University as 0.4925 rhitung score greater than 0.317 rtabel. This shows a significant correlation while the coefficient of determination between X1 and Y of 24.25303%. 2) the effect of vocabulary mastery to capability students of translate in the Kudus Islamic University as a score of 0.605 rhitung greater than 0.317 rtabel. This shows a significant relationship coefficient of determination between X2 and Y amounted to 36.62499%, 3) The calculation Ry.X1X2 0.589, ryx1 0.492 and 0.605 ryx2 greater than 0.317 rtabel. This shows that there is a relationship multi positive correlation between mastery of vocabulary and grammatical to capability students of translate in the Kudus Islamic University and acceptance of the hypothesis.

Efikasi Diri, Kecemasan Matematis dan Kemampuan Pemecahan Masalah Siswa dalam Pembelajaran Berbasis Saintifik

2020 ◽  
Vol 3 (1) ◽  
pp. 29-38
Author(s):  
Isna Rafianti ◽  
Siti Nurul Afifah ◽  
Abdul Fatah
Keyword(s):  
Problem Solving ◽  
Significant Relationship ◽  
Self Efficacy ◽  
Quantitative Research ◽  
Coefficient Of Determination ◽  
Ability Test ◽  
Mathematical Anxiety ◽  
Class Viii ◽  
The Relationship

This study aims to determine the relationship between self-efficacy and mathematical anxiety with the problem solving ability of students of class VIII SMP in scientific based learning. This research is quantitative research. The instruments of this study were self-efficacy questionnaire, mathematical anxiety questionnaire and problem solving ability test questions. The results of this study are: (1) there is a positive and significant relationship between self-efficacy and problem solving ability with a regression coefficient value of 22.1% (2) there is a negative and significant relationship between mathematical anxiety towards problem solving ability with a coefficient of determination of 13 % (3) there is a significant relationship between self-efficacy and mathematical anxiety with the ability to solve problems with a coefficient of determination of 22.4%.

Partial-Body Cryotherapy Exposure 2 Hours Prior to a Shuttle Run Does Not Enhance Running Performance

2021 ◽  
pp. 1-8
Author(s):  
Emily M. Partridge ◽  
Julie Cooke ◽  
Andrew J. McKune ◽  
David B. Pyne
Keyword(s):  
Muscle Soreness ◽  
Well Being ◽  
Rugby League ◽  
Enzyme Concentration ◽  
Control Group ◽  
Confidence Limits ◽  
Partial Body ◽  
Run Test ◽  
Maximal Effort ◽  
Shuttle Run

Purpose: To determine whether a single acute preexercise bout of partial-body cryotherapy (PBC) enhanced maximal-effort shuttle run performance, salivary enzyme concentration, and self-reported performance readiness. Methods: A total of 18 male rugby league players (age = 20.1 [0.5] y; mass = 91.4 [12.4] kg) were exposed to either PBC for 3 minutes at −136°C (1°C) or a control condition prior to a continuous, high-intensity 6 × 40-m shuttle run test. Passive saliva samples were collected to determine salivary alpha amylase (sAA) concentration. Perceived performance readiness and well-being questionnaires were completed using a 1-to-7 Likert scale. Results: The PBC exposure did not elicit a greater improvement in 6 × 40-m shuttle run performance in comparison with the control condition (standardized difference; +0.4 [5.9%]; P = .881; mean ± 90% confidence limits). The increase in sAA concentration was moderately greater 15 minutes after PBC compared with the control group (+67 [32%], P = .012) and remained moderately higher up to 2 hours post-PBC exposure compared with the control condition (+41 [40%], P = .045). There were greater improvements in self-reported perceptions of muscle soreness (+0.6 [0.4%], P = .043; units ±90% confidence limits) and mood (+0.6 [0.7%], P = .038) after PBC compared with control. Conclusions: It appears that a single 3-minute bout of PBC does not augment maximal effort shuttle run performance in elite rugby league players. Beneficial increases in sAA concentration, coupled with improved perceptions of muscle soreness and mood, should be explored further for alternative training or precompetition practices.

scholarly journals The Relationship between Fitness and Marksmanship in Police Officers

Safety ◽  
2019 ◽  
Vol 5 (3) ◽  
pp. 54 ◽  
Author(s):  
Hannah Muirhead ◽  
Robin Orr ◽  
Ben Schram ◽  
Charlie Kornhauser ◽  
Ryan Holmes ◽  
...  
Keyword(s):  
Law Enforcement ◽  
Police Officers ◽  
Significant Relationship ◽  
Leg Strength ◽  
Dynamic Scenario ◽  
Law Enforcement Agency ◽  
Fitness Measures ◽  
Fitness Training ◽  
The Relationship ◽  
Shuttle Run

Police officers may be required to discharge their weapon under physical duress. The purpose of this study was to investigate the relationship between fitness and marksmanship to facilitate future strategies to improve marksmanship. Retrospective data were provided for thirty-four police officers (mean age = 40.48 ± 6.66 years: mean weight = 100.60 ± 19.82 kg: mean height = 180.42 ± 6.87 cm) from a US-based law enforcement agency. Data included four different fitness measures and three different shooting scenarios. No significant relationship was observed between the three different shooting scenarios. There was a significant relationship between shuttle run and static shoot (r = 0.528, p = 0.002), grip strength and the dynamic scenario (r = −0.367, p = 0.035) and leg strength and the positive identification scenario (r = 0.344, p = 0.050). This study demonstrated that a high variety of fitness training and marksmanship practice, under various occupational scenarios, may be required to ensure optimal police shooting accuracy whilst in the field.

Cross Validation of the 20-m Shuttle Run Test for Children and Adolescents with Mental Retardation

2000 ◽  
Vol 17 (4) ◽  
pp. 402-412 ◽  
Author(s):  
Bo Fernhall ◽  
A. Lynn Millar ◽  
Kenneth H. Pitetti ◽  
Terri Hensen ◽  
Mathew D. Vukovsch
Keyword(s):  
Mental Retardation ◽  
Children And Adolescents ◽  
Traditional Approach ◽  
Peak Oxygen Consumption ◽  
Specific Formula ◽  
Run Test ◽  
Accuracy Of Prediction ◽  
The Relationship ◽  
Treadmill Protocol ◽  
Shuttle Run

We cross validated the 20-m shuttle run test of aerobic capacity in children and adolescents with mild and moderate mental retardation (MR) using the population specific formula of Fernhall et al. (1998). Nine boys and 8 girls (age = 13.7 yr) completed a maximal treadmill protocol (measured V̇O2peak) and a 20-m shuttle run (predicted V̇O2peak). The measured peak oxygen consumption (V̇O2peak) was 39.4 ml kg-1 min-1. The relationship between measured and predicted V̇O2peak was r = .86 with an SEE of 6.2 ml kg-1 min-1. Multiple regression and Bland-Altman analyses showed that there was little bias, but the Bland-Altman analysis indicated highly variable limits of agreement (Bland & Altman 1986). Thus, the traditional approach (regression analysis) to concurrent validity revealed that the 20-m shuttle run is a valid indicator of V̇O2peak in these participants. The accuracy of prediction (Bland & Altman, 1986), however, was lower than expected in a population without MR.

Sign in / Sign up

Export Citation Format

Share Document