scholarly journals MODEL CHARACTERISTICS OF SPEED ABILITIES AMONG SPRINTER SWIMMERS AT THE STAGE OF PERFORMANCE IMPROVEMENT

Author(s):  
A.S. Garkovenko ◽  
◽  
A.Yu. Bryukhanova ◽  
K.A. Manuylova ◽  
N.V. Soboleva ◽  
...  

Statement of the problem. The use of physical fitness simulation among athletes is much less common than the improvement of individual techniques, means and other “tools” of coaches. However, with the help of simulation, specialists in the field of high-performance sports can more effectively realize a training plan and use it, adapting it to specific athletes with their body characteristics as much as possible. Therefore, the purpose of the article is to develop model characteristics of speed abilities among sprinter swimmers specializing in the 100-meter freestyle at the stage of their performance improvement. The methodology of our work is based on the analysis of scientific literature on the selected problem and testing of sprinter swimmers for development of model characteristics of their speed abilities. Research result. Using the methodology of V.M. Zatsiorsky, we developed a score scale of assessments, and its interpretation on the graph with visualization of test results of athletes. According to these charts, we can specify the “problems” and “advantages” in the physical fitness of sprinter swimmers. We also conducted a factor analysis, as a result of which we identified specific factors that affect the performance for this distance. Conclusion. Based on the results of this study, we have identified 4 factors and variables most influential for the result in the profile distance of swimmers. Using these data, the relationships among variables are established.

2021 ◽  
Vol 1036 ◽  
pp. 371-377
Author(s):  
Jia He Wang

In this paper, the influence of liquid alkali-free accelerator and advanced composite cementitious materials on the mechanical properties, durability and workability of shotcrete was studied. The important role of the two materials in the performance improvement of shotcrete was clarified. The technical measures proposed were verified by field test. The results show that: In terms of workability, the composite use of alkali-free accelerator and functional admixture can achieve fast setting and high early strength of shotcrete, thus effectively reducing the rebound rate; In terms of mechanical properties, functional admixture can effectively improve the early mechanical properties of shotcrete, while alkali-free accelerator can ensure the long-term development of mechanical properties; In terms of durability, the use of functional admixtures can effectively improve the compactness of shotcrete, and the test results of 56d electric flux are lower than 1000C.


2015 ◽  
Vol 8 (1and2) ◽  
Author(s):  
Shyju P. J. ◽  
Rinzing Lama

In this study, the authors makes an attempt to understand the aspirations of the new generation employees in tour operation business and allied areas. It is being attempted with the presumption that the takeover of information technology seeded the concept of micro enterprises in tourism which functions with the business model of low investment and good turnover. The focus was in identifying employee specific factors of encouraging and discouraging in nature in the fast growing tourism sector, especially job attrition and the dynamics of human resource management practices. Factor Analysis, independent sample t-test, multiple regression have been used to establish various relationships. The findings of the study are considered to be relevant since it quantitatively establish the dynamics of employment in tourism in India.


Author(s):  
I Putu Eka Jaya ◽  
Nyoman Mangku Karmaya ◽  
Made Jawi ◽  
Wayan Weta ◽  
Ida Bagus Ngurah ◽  
...  

Physical fitness is ability to perform the activity or activities without feeling tired excessively. Physical fitness associated with a person`s organs to carry out its tasks properly every day without experiencing significant fatigue. In a child’s mental retardation with a les mobile lifestyle that will affect his physical fitness. The purpose of this study to determine which type of gymnastic exercise better to the physical fitness on the students in Sekolah Dasar Luar Biasa Kuncup Bunga Denpasar.This research used experimental method using Randomized study Pre and Post Test Group Design. The subjects in this study were students in Sekolah Dasar Luar Biasa Kuncup Bunga Denpasar. There were 18 students which is divided into two groups: group-1 is senam penguins and group-2 is senam ria anak Indonesia. Data were obtained after a six-week training analyzed by paired t-test and unpaired t-test.The results of physical fitness test before training with Senam Penguins was 23.39 ± 1.69 and the test results after the training was 27.87 ± 3.28. the physical fitness test in group-2 before training with Senam Ria anak Indonesia was 22.69 ± 1.76 and the results after training was 24.64 ± 2.11. Paired t-test in both group before and after training showed significant differences after training in group-1 and group-2 with a value of p > 0.05 with an increase in physical fitness test results of (19.15) in group-1 and (8.64) in group-2. The percentage increase physical fitness test results of group-1 with senam penguins is higher than those in group-2 with senam ria anak Indonesia.So we can conclude that the training of senam penguin in Sekolah Dasar Luar Biasa Kuncup Bunga Denpasar improved the physical fitness test results higher than senam ria anak Indonesia.


2021 ◽  
pp. 1-7
Author(s):  
Haniel Fernandes

<b><i>Background:</i></b> Soccer is an extremely competitive sport, where the most match important moments can be defined in detail. Use of ergogenic supplements can be crucial to improve the performance of a high-performance athlete. Therefore, knowing which ergogenic supplements are important for soccer players can be an interesting strategy to maintain high level in this sport until final and decisive moments of the match. In addition, other supplements, such as dietary supplements, have been studied and increasingly referenced in the scientific literature. But, what if ergogenic supplements were combined with dietary supplements? This review brings some recommendations to improve performance of soccer athletes on the field through dietary and/or ergogenic supplements that can be used simultaneously. <b><i>Summary:</i></b> Soccer is a competitive sport, where the match important moments can be defined in detail. Thus, use of ergogenic supplements covered in this review can improve performance of elite soccer players maintaining high level in the match until final moments, such as creatine 3–5 g day<sup>−1</sup>, caffeine 3–6 mg kg<sup>−1</sup> BW around 60 min before the match, sodium bicarbonate 0.1–0.4 g kg<sup>−1</sup> BW starting from 30 to 180 min before the match, β-alanine 3.2 and 6.4 g day<sup>−1</sup> provided in the sustained-release tablets divided into 4 times a day, and nitrate-rich beetroot juice 60 g in 200 mL of water (6 mmol of NO3<sup>−</sup> L) around 120 min before match or training, including a combination possible with taurine 50 mg kg<sup>−1</sup> BW day<sup>−1</sup>, citrulline 1.2–3.4 g day<sup>−1</sup>, and arginine 1.2–6 g day<sup>−1</sup>. <b><i>Key Messages:</i></b> Soccer athletes can combine ergogenic and dietary supplements to improve their performance on the field. The ergogenic and dietary supplements used in a scientifically recommended dose did not demonstrate relevant side effects. The use of various evidence-based supplements can add up to further improvement in the performance of the elite soccer players.


2018 ◽  
Vol 6 (3) ◽  
pp. 275-286
Author(s):  
Pedro Carlos Resende Junior ◽  
Ricardo Ken Fujihara

2017 ◽  
Vol 12 (1) ◽  
pp. 13-19
Author(s):  
Ari Saptono

The research aims to develop the valid and reliable measurement instruments of entrepreneurship intention in vocational secondary school students. Multi stage random sampling was used as the technique to determine sample (300 respondents). The research method used research and development with confirmatory factor analysis (CFA). Result of confirmatory factor analysis (CFA) at the second order with robust maximum likelihood method shows that valid and reliable instrument with the acquisition value of loading factor is more than 0.5 (> 0,5) and a significance value of t is more than 1,96 (> 1,96). Reliability test results shows that the value of the combined construct reliability (CR) of 0.97and a variance value extract (VE) to 0.52 is greater than the limit of acceptance CR ? 0.70 and VE ? 0.50. The conclusion of the measurement instruments of entrepreneurship intention with three dimensions and 31 items met the standards of validity and reliability in accordance with the instrument development process.


2018 ◽  
Vol 1 (5) ◽  
Author(s):  
Chuikun Li ◽  
Xue Li ◽  
Qiongjia Yuan ◽  
Zheng Zhao ◽  
Lan Li ◽  
...  

Objective The study tested young children's 20-m running in Chengdu, analyzed of the characteristics of change in age and gender, to construct the norm and evaluation system of the 20-m running of young children and provide the basis for assessing children's sports ability and physical fitness. The results can used as one of the children's physical fitness evaluation content. Methods The stratified random sampling method was used to select kindergarten children in from 25 kindergartens in a district of Chengdu, and totally, 3089 children of 3-6 years old were tested.The best scores by two trials were used as the 20-m running performance. Results With the growth of the age, young children's 20 m running is gradually increased. There are significant differences in the mean values of boys and girls aged 3, 4, 5 and 6 (F = 228.696, F = 366.477, P < 0.01). Compared with boys and girls of the same age group, boys are superior to girls, and there is no significant difference between boys and girls aged 6 (F = 0.879, P > 0.05). The differences in other groups were statistically significant (F=0.138, F=0.204, F=0.133, P < 0.01). The percentile 10, 25, 50, 75, 90 values of the 20 m running of young children were recorded, respectively, and according to the statistical percentile method to divide the evaluation grade standards, the test results of the 10th, 25th, 75th and 90th percentage site test results were selected to develop the five-level rating system of children's 20 m running. Conclusions  With the growth of the age, young children's 20 m running is gradually increased, and there are significant differences between groups. It is suggested that the flexibility of nervous processes, the coordination of the body, the flexibility of joints and muscles, and the strength and endurance of muscles are gradually enhanced in children. Constructed the norm and five-grade evaluation system of preschool children's 20 m running, and provided the basis for formulating the grade standard of preschool children's physique evaluation in the future.


2022 ◽  
Vol 41 (1) ◽  
pp. 21-33
Author(s):  
Khairi Mustafa Fahelelbom ◽  
Abdullah Saleh ◽  
Moawia M. A. Al-Tabakha ◽  
Akram A. Ashames

Abstract Qualitative Fourier transform infrared (FTIR) spectroscopy has long been established and implemented in a wide variety of fields including pharmaceutical, biomedical, and clinical fields. While the quantitative applications are yet to reach their full potential, this technique is flourishing. It is tempting to shed light on modern engaging and the applicability of analytical quantitative FTIR spectroscopy in the aforementioned fields. More importantly, the credibility, validity, and generality of the application will be thoroughly demonstrated by reviewing the latest published work in the scientific literature. Utilizing FTIR spectroscopy in a quantitative approach in pharmaceutical, biomedical, and interdisciplinary fields has many undeniable advantages over traditional procedures. An insightful account will be undertaken in this regard. The technique will be introduced as an appealing alternative to common methods such as high performance liquid chromatography. It is anticipated that the review will offer researchers an update of the current status and prospect on the subject among the pharmacy and biomedical sciences both in academic and industrial fields.


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