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

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.

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A Simple Test for the Assessment of Aerobic Fitness

Journal of The Royal Naval Medical Service ◽

10.1136/jrnms-74-107 ◽

1988 ◽

Vol 74 (2) ◽

pp. 107-114

Author(s):

D. J. Smith ◽

R. J. Pethybridge ◽

A Duggan

Keyword(s):

Heart Rate ◽

Body Weight ◽

Physical Fitness ◽

Lean Body Mass ◽

Body Mass ◽

Test Score ◽

Linear Regression Analysis ◽

Treadmill Running ◽

Step Test ◽

Anthropometric Measures

SummaryThe relationship between physical fitness, anthropometric measures, and the scores in three submaximal step tests have been evaluated in a group of 30 male subjects. Physical fitness was assessed as VO2max measured directly during uphill treadmill running. Each submaximal exercise test was of six minutes duration and the heart rate recorded during the last minute (fH6) constituted the test score. Significant negative correlation coefficients were found between VO2max and each test score while lean body mass, gross body weight and body surface area were allpositively correlated with VO2max (1/min). The score in the least severe step test was included with anthropometric measures in multiple linear regression analysis for the prediction of VO2max and a number of prediction equations were derived. It was found that when lean body mass is calculated from skinfold measurements and weight, VO2max can be calculated from the equation:VO2max(1/min) = 1.470 + 0.0614 × Lean Body mass −0.0131 × fH6This equation accounts for 73% of the total variation of VO2max. If lean body mass cannot be calculated, a combination of gross body weight and age plus fH6 gives the equation:VO2max = 3.614 + 0.0349 × Weight – 0.0177 × fH6−0.0161 × Ageaccounting for 66% of the variance. The test has the following advantages over those currently employed:It is simple to administer requiring 6 minutes of stepping onto a 32 cm platform—the height of a gymnasium bench—20 times per minute.Although ideally an assessment oflean body mass is required, gross body weight plus age is a good second best.It is submaximal, minimising the stress on the individual (mean heart rate achieved 121 beats per minute).Its accuracy in terms of its ability to predict maximal aerobic power is better than either the Ohio or Harvard University tests.It is suggested that this test could be used where maximal testing is contraindicated or where currently used tests are insufficiently accurate.

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Relationships between somatic structure, physical fitness, and the results in passing selected obstacle courses by cadets from the General Tadeusz Kościuszko Military University of Land Forces

Scientific Journal of the Military University of Land Forces ◽

10.5604/01.3001.0014.5865 ◽

2020 ◽

Vol 198 (4) ◽

pp. 832-844

Author(s):

Dariusz Lenart

Keyword(s):

Body Mass Index ◽

Physical Fitness ◽

Body Mass ◽

Body Height ◽

Forced Expiratory Volume ◽

The Body ◽

Significant Relationships ◽

Fitness Tests ◽

And Performance ◽

The Relationship

The study aims to assess the relationship between the body structure, physical fitness, and functional parameters of the respiratory system of the cadets from the General Tadeusz Kościuszko Military University of Land Forces (AWL) and their results in passing selected obstacle courses. The research material was collected from testing cadets of the third year of management studies. The research included anthropometric measurements, physical fitness tests, spirometry, and tests determining the level of passing selected obstacle courses. Body height and weight were measured. The body mass index was also calculated. Besides, the following functional characteristics were measured: cardiopulmonary endurance, functional strength, running speed and agility, balance, forced expiratory volume in 1 second, forced vital capacity, and peak expiratory flow. The study also included tests determining the level of passing the land and water obstacle courses. Statistically significant relationships were found between height and weight, balance, and forced expiratory volume in 1 second. Moreover, there were correlations between body weight and body mass index and the results in passing the land obstacle course. In addition, there were connections between cardiopulmonary endurance and performance in passing the land obstacle course, body balance, and performance in passing the land and water obstacle course. All the relationships mentioned above were low and statistically significant.

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The Impact of Reduced Training Activity of Elite Kickboxers on Physical Fitness, Body Build, and Performance during Competitions

International Journal of Environmental Research and Public Health ◽

10.3390/ijerph18084342 ◽

2021 ◽

Vol 18 (8) ◽

pp. 4342

Author(s):

Tadeusz Ambroży ◽

Łukasz Rydzik ◽

Zbigniew Obmiński ◽

Andrzej T. Klimek ◽

Natalia Serafin ◽

...

Keyword(s):

Physical Fitness ◽

Body Mass ◽

Negative Impact ◽

Body Height ◽

International Committee ◽

Physical Fitness Test ◽

Sports Clubs ◽

Body Build ◽

And Performance ◽

The Impact

Background: Kickboxing is a combat sport where athletes require constant supervision of a coach. The outbreak of the pandemic caused by SARS-CoV-2 has led to a crisis in many sectors, including sport. Global efforts to limit the spread of the pathogen resulted in temporary lockdowns that limited sporting activity, thus deteriorating athletes’ physical fitness. Methods: The participants included 20 kickboxers competing at the international level. Their physical fitness was evaluated based on the test developed by the International Committee on the Standardization of Physical Fitness Test (ICSPFT) and their body build was assessed using Tanita BC601 body composition monitor and a body height meter. Differences between physical fitness before the COVID-19 outbreak and during the pandemic after re-opening sports facilities were evaluated. Results: Temporary closing of sports clubs has led to the increase in body mass of the participants by 2.65 kg on average and significantly deteriorated physical fitness. Conclusions: Temporary closing of sports clubs and restrictions on physical activity aimed at containing the spread of COVID-19 caused a significant reduction in physical fitness and increased body mass of the participants. This is likely to cause worse performance in the nearest competitions and have a negative impact on the athletes’ health status and immunity to diseases.

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Physical fitness of people with moderate and considerable intellectual disabilities

Physiotherapy ◽

10.2478/physio-2013-0012 ◽

2013 ◽

Vol 21 (3) ◽

Author(s):

Marzena Ślężyńska ◽

Grzegorz Mięsok ◽

Kamila Mięsok

Keyword(s):

Physical Activity ◽

Intellectual Disability ◽

Physical Fitness ◽

Body Mass ◽

Body Height ◽

Abdominal Muscle ◽

The Body ◽

Intellectually Disabled ◽

Fitness Tests ◽

Abdominal Muscle Strength

AbstractIntroduction: The aim of the physical activity of the intellectually disabled is the strengthening of health, creating movement habits, promoting active recreation, and maintaining exercise capacity. Skillfully applied physical activity allows to mitigate the effects of pathology and create the compensations to enable the intellectually disabled people to live relatively independently. Physical activity and sport also increase their chances to integrate with their families, peers, and social environment.Materials and methods: The research targeted a group of 134 people with moderate or considerable intellectual disability (65 women and 69 men), aged 20-53 years, who participated in occupational therapy workshops in Jastrzębie Zdrój, Rybnik, and Żory. Physical fitness was assessed using the “Eurofit Special” test and balance tests. Measurements of body height and mass were also taken and then used to calculate the body mass index (BMI).Results: A salient somatic trait was the greater body mass relative to height among the persons with considerable disability, clearly illustrated by the BMI. This explained their greater heaviness in performing physical exercises. An even greater difference between participants with moderate and considerable intellectual disability was visible in physical fitness. Obviously, older persons did not achieve as good results in fitness tests as the younger ones, yet the participants were more differentiated by the level of disability than age. Most symptomatic differences to the disadvantage of the considerably disabled were observed in explosive strength, speed, abdominal muscle strength, and flexibility.Conclusions: Significant differences in fitness between the compared groups make it necessary to take into account the level of intellectual disability in the course of physical education and sport, at work, and in household duties.

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Relationship between fat-to-fat-free mass ratio and decrements in leg strength after downhill running

Journal of Applied Physiology ◽

10.1152/jappl.2001.90.4.1334 ◽

2001 ◽

Vol 90 (4) ◽

pp. 1334-1341 ◽

Cited By ~ 11

Author(s):

R. C. Hickner ◽

P. M. Mehta ◽

D. Dyck ◽

P. Devita ◽

J. A. Houmard ◽

...

Keyword(s):

Body Mass ◽

Muscle Glycogen ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Fat Free Mass ◽

Mass Ratio ◽

Low Fat ◽

Cross Sectional ◽

Leg Strength ◽

Downhill Running

The purpose of this study was to determine whether greater body fat mass (FM) relative to lean mass would result in more severe muscle damage and greater decrements in leg strength after downhill running. The relationship between the FM-to-fat-free mass ratio (FM/FFM) and the strength decline resulting from downhill running (−11% grade) was investigated in 24 male runners [age 23.4 ± 0.7 (SE) yr]. The runners were divided into two groups on the basis of FM/FFM: low fat (FM/FFM = 0.100 ± 0.008, body mass = 68.4 ± 1.3 kg) and normal fat (FM/FFM = 0.233 ± 0.020, body mass = 76.5 ± 3.3 kg, P < 0.05). Leg strength was reduced less in the low-fat (−0.7 ± 1.3%) than in the normal-fat individuals (−10.3 ± 1.5%) 48 h after, compared with before, downhill running ( P < 0.01). Multiple linear regression analysis revealed that the decline in strength could be predicted best by FM/FFM ( r2= 0.44, P < 0.05) and FM-to-thigh lean tissue cross-sectional area ratio ( r2= 0.53, P < 0.05), with no additional variables enhancing the prediction equation. There were no differences in muscle glycogen, creatine phosphate, ATP, or total creatine 48 h after, compared with before, downhill running; however, the change in muscle glycogen after downhill running was associated with a higher FM/FFM ( r = −0.56, P < 0.05). These data suggest that FM/FFM is a major determinant of losses in muscle strength after downhill running.

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Pengaruh Latar Belakang Pendidikan dan Seleksi Terhadap Kompetensi dan Kinerja di Moderasi Pengawasan Pada Program BSPS Provinsi Riau

Jurnal Akuntansi dan Ekonomika ◽

10.37859/jae.v10i2.2041 ◽

2020 ◽

Vol 10 (2) ◽

pp. 178-187

Author(s):

Bambang Priatama

Keyword(s):

Regression Analysis ◽

Linear Regression ◽

Public Housing ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Educational Background ◽

Public Works ◽

Background Selection ◽

Field Workers ◽

And Performance

The study was conducted at the Ministry of Public Works and Public Housing Snvt Provision of Housing in Riau Province. The aim is to find out the direct effect of educational background and selection, on the competence and performance of field workers with supervision as a moderating variable. This study took a sample of 128 people. The variables used are educational background, selection, competence and performance and supervision. Data were analyzed using multiple linear regression analysis methods operated through the SPSS program. The results showed that there was an influence of educational background and selection on the competence of field workers. And simultaneously there is an influence of educational background and selection on competence. And there is an effect of competence on performance which is moderated by supervision. The better the supervision, the competence of field staff will increase.

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PENGARUH REMUNERASI DAN MOTIVASI TERHADAP KINERJA DI LEMBAGA PEMASYARAKATAN TERBUKA KELAS II B PASAMAN, KAB. PASAMAN BARAT

Jurnal Apresiasi Ekonomi ◽

10.31846/jae.v8i3.293 ◽

2020 ◽

Vol 8 (3) ◽

pp. 488-499

Author(s):

Endang Tirtana Putra ◽

Abdi Rezki

Keyword(s):

Regression Analysis ◽

Regression Coefficient ◽

Employee Performance ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Independent Variables ◽

Significant Rate ◽

R Value ◽

And Performance ◽

Good Interpretation

This study applies multiple linear regression analysis with the SPSS Version 16.0 program. To get estimate and good interpretation of this study, the samples studied are set to 32 respondents. Data are collected through a questionnaire to measure quantitative variables with a Likert scale. The results of this study show that there is a relationship between independent variables on dependent variable, and it can be explained that: (1) Remuneration variable does not have significant impact on employee performance, with a regression coefficient of 0.181 and significant rate 0.104 (> 0.05). (2) Motivation variable has significant impactt on employee performance with a regression coefficient of 0.559 and significant rate 0,000 (<0.05). (3) Independent variables simultaneously have significant impact on employee performance with regression coefficient of 1.094 and significant rate 0.000 (<0.05). R² value shows 0.589 or 58.9%. Employee performance variable is affected by Remuneration and Motivation Variables and the remaining 41.1% is affected by other variables.Keywords : Remuneration, Motivation and Performance

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Positive Association Between Body Mass Index and Hematologic Parameters, Including RBC, WBC and Platelet Count, in Korean Children and Adolescent

10.21203/rs.3.rs-576071/v1 ◽

2021 ◽

Author(s):

Hwal Rim Jeong ◽

Young Seok Shim

Keyword(s):

Body Mass Index ◽

Children And Adolescents ◽

Body Mass ◽

Linear Regression Analysis ◽

Positive Association ◽

Multiple Linear Regression Analysis ◽

Normal Weight ◽

Overweight And Obesity ◽

Korean Children ◽

Children And Adolescent

Abstract Objective: To investigate the associations between hematologic parameters and obesity in children and adolescents.Methods: A total of 7,997 subjects (4,259 boys, 3,738 girls) aged 10–18 years was enrolled and hematologic parameters, including WBC, RBC, Hb, Hct, and platelet levels, were recorded and compared against body mass index (BMI) classified into normal-weight, overweight, and obesity groups.Results : The obesity group had significantly higher mean levels of WBC (7.16 vs. 6.16 (x103/mm3), p<0.001), RBC (4.90 vs. 4.82 (x106/mm3), p<0.001), Hb (14.07 vs. 13.99 (g/dL), p<0.05), Hct (42.31 vs. 41.91 (%), p<0.001) and platelets (311.87 vs. 282.66 (x103/mm3), p<0.001) than the normal-weight group after adjusting for obesity and sex. BMI SDS was significantly positively associated with WBC (β=0.275, p<0.001), RBC (β=0.028, p<0.001), Hb (β=0.034, p<0.001), Hct (β=0.152, p<0.001), and platelets (β=8.372, p<0.001) after adjusting for age, sex, and possible socioeconomic confounders in a multiple linear regression analysis.Conclusion: Higher BMI is associated with elevated WBC, RBC, Hb, Hct and platelet counts in children and adolescents. Because higher hematologic parameters are potential risk factors for obesity-related morbidity, more attention should be paid to evaluating and interpreting hematologic parameters in children and adolescents with obesity

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Physical Fitness with Regular Lifestyle Is Positively Related to Academic Performance among Chinese Medical and Dental Students

BioMed Research International ◽

10.1155/2020/5602395 ◽

2020 ◽

Vol 2020 ◽

pp. 1-10

Author(s):

Yujiao Hou ◽

Guang Mei ◽

Yutong Liu ◽

Weisheng Xu

Keyword(s):

Academic Performance ◽

Medical Students ◽

Physical Fitness ◽

Family Background ◽

Linear Regression Analysis ◽

Multiple Linear Regression Analysis ◽

Dental Students ◽

Average Score ◽

Physical Test ◽

Medical And Dental Students

Objective. The purpose of this study was to examine the relationship between physical fitness, lifestyle, and academic performance of Chinese college students and investigate the differences among medical and dental students on their lifestyle. Methods. This study was conducted with 316 students enrolled from 2012 to 2014 at Tongji University. Scores from the college physical test were used to represent the students’ physical fitness condition. Lifestyle was measured by some variables extracted from the students’ behavior data provided by the university’s information center. Academic performance was measured by the average score of basic courses and the average score of professional courses. Demographic information, including age, gender, nation, and family background, was also obtained. Separate multiple linear regression analysis was performed for modeling academic performance and physical fitness with a p value threshold of 0.05. Results. A total of 212 (45.97% females) medical students and 104 (58.65% females) dental students participated in this study. Physical fitness score (medical: r = 0.34, p<0.001; dental: r = 0.47, p<0.001), library visiting frequency (medical: r = 0.30, p<0.001; dental: r = 0.62, p<0.001), number of books borrowed (medical: r = 0.19, p<0.01; dental: r = 0.37, p<0.001), frequency of waking up early (medical: r = 0.29, p<0.001; dental: r = −0.30, p<0.01), and times of eating breakfast (medical: r = 0.49, p<0.001; dental: r = 0.47, p<0.001) were all significantly associated with academic performance. Library visiting frequency (medical: r = 0.26, p<0.001; dental: r = 0.41, p<0.001) and eating frequency (medical: r = 0.48, p<0.001; dental: r = 0.42, p<0.001) were also closely related with physical fitness. Conclusion. Physical fitness, library usage, and the regularity of lifestyle are significant contributors to academic performance among Chinese medical and dental students. Moreover, medical students are shown to have less rest time compared to dental students.

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Anthropometric characteristics, physical fitness and the prediction of throwing velocity in handball men young players

Kinesiology ◽

10.26582/k.51.2.14 ◽

2019 ◽

Vol 51 (2) ◽

pp. 253-260 ◽

Cited By ~ 1

Author(s):

Jose M. Saavedra ◽

Kristján Halldórsson ◽

Hafrún Kristjánsdóttir ◽

Sveinn Þorgeirsson ◽

Geir Sveinsson

Keyword(s):

Physical Fitness ◽

Body Mass ◽

Body Height ◽

Anthropometric Parameters ◽

Ball Speed ◽

National Team ◽

Counter Movement Jump ◽

Run Up ◽

Almost All ◽

Medicine Ball

The objectives of this study were: (i) to analyse anthropometric parameters, physical fitness, and throwing velocity of handball male elite youth players of different ages; and (ii) to develop a multivariate model that explains throwing velocity. Fifty-three handball men players (17.99±1.68 years old), members of the Icelandic National Teams, participated in the study. The participants were classified into the U21 National Team (n=12), U19 National Team (n=17), and U17 National Team (n=24). All were evaluated by basic anthropometry (body height, body mass, body mass index), physical fitness tests (counter movement jump, medicine ball throw, hand dynamometry, 10 m and 30 m sprint, yo-yo IR2 test) and ball speed after various handball throws at goal (a 7-m throw, a 9-m ground shot after a three-step run-up, and a 9-m jump shot after a three-step approach). A one-way analysis of variance with a Bonferroni post-hoc test was used to establish the differences between the teams. Multiple linear regression was used to predict the speed of the ball from each of the three shots taken for each team. There were no differences between the U21 and U19 teams except for the medicine ball throw, but the U19 team scored better than the U17 team in almost all variables. Ball speed after a handball shot was predicted (between 22% and 70% of accuracy) with only one or two physical fitness variables in each model ‒ medicine ball throw (in four models), counter movement jump (in two models), and 10 m sprint (in two models), being the variables that were most selective.

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