scholarly journals Methodology of teaching the techniques of playing volleyball among 11-12 year-old boys

2020 ◽  
Vol 26 ◽  
pp. 00083
Author(s):  
Irina Lazunina ◽  
Maria Kosheleva
Keyword(s):  
Direct Observation ◽  
Peripheral Vision ◽  
Body Parts ◽  
Main Attention ◽  
Direct Training ◽  
Volleyball Players ◽  
The Moment ◽  
Definite Limit

In all games, connected with the ball, main attention of a player should be paid to a moving ball. This rule ignoring leads to often inaccurate ball hitting. Admittedly, players should be taught to observe the opponent. But at the same time direct observation is held to the definite limit. And during the moment of direct training and hit fulfillment main attention is paid to the ball and other environment is observed only with the help of peripheral vision. During the game young volleyball players lose many favorable moments only because they can’t choose the best ways of a hit in the combat with the opponent. During the playing technique explanation and study it is necessary to study thoroughly the basis of the technique, the sequence of the separate body parts movements, speed and their amplitude during different techniques fulfillment. These factors are the main for volleyball player’s actions effectiveness achievement. While the attacking hit fulfillment and blocking it is important to control the opponent during the technique fulfillment. That is why it is necessary to master the ability to observe the opponent’s movements all the time, till the hit on the ball, among young volleyball players.

Tools and Technologies for Hot Forming with Local Adjustment of Part Properties

2010 ◽  
Vol 638-642 ◽  
pp. 3919-3924 ◽  
Author(s):  
Ralf Kolleck ◽  
Robert Veit
Keyword(s):  
High Strength Steels ◽  
High Strength ◽  
Strength Distribution ◽  
Body Parts ◽  
Press Hardening ◽  
Uniform Strength ◽  
University Of Technology ◽  
Ultra High Strength Steels ◽  
Conventional Press ◽  
The Moment

In general hot stamped car body parts show a uniform strength distribution. Especially for safety relevant parts with high requirements concerning crash performance, this uniform strength distribution can cause problems. During a crash a B-pillar e. g. can absorb more energy when the lower part is relatively flexible while the middle and upper part has to be high-tensile to prevent the intrusion into the passenger compartment. Also during the production of hot stamped parts, the high strength causes trouble. When the trimming takes place after the hardening process, the durability of the tool is limited. Thus at the moment the only economic process for trimming of ultra-high-strength steels is laser cutting. This paper presents different approaches to reach local different strength distributions in hot stamped components. In particular the results of a research project of the Institute Tools & Forming, Graz University of Technology are shown where precisely defined areas of different strengths could be obtained in one part. This was achieved by the use of simple and cheap ceramic inserts in conventional press hardening tools.

scholarly journals Socialization and Training at Gloria Muda Volleyball Club

2021 ◽  
Vol 2 (1) ◽  
pp. 135-142
Author(s):  
Edi Irwanto ◽  
Danang Ari Santoso ◽  
Bayu Septa Martaviano Triaiditya ◽  
Marki Sandi ◽  
Dadang Mubin
Keyword(s):  
Training Program ◽  
Vertical Jump ◽  
Technical Skills ◽  
Jump Height ◽  
Basic Technique ◽  
Physical Conditions ◽  
Direct Training ◽  
Vertical Jump Height ◽  
Volleyball Players ◽  
And Training

The purpose of this service is to provide socialization and training at Gloria Muda Tambakrejo volleyball club, Bulurejo Village, Purwoharjo District, Banyuwangi Regency. The method used in this service is discussion and direct training (demonstration and practice) to the coaches and volleyball players of Gloria Muda Tambakrejo. The result of this activity was that the volleyball club coach Gloria Muda Tambakrejo gained new insights regarding the training program and how to train and was able to develop a training program that could be used to develop the technique and game of the Tambakrejo volleyball club. Young Gloria club players get training programmed according to the training program that suits their needs. Increased basic technical skills of passing, smash and vertical jump height of club players Gloria Muda Tambakrejo. Increased skills of passing and smash techniques and physical conditions (vertical jump) by 6.17%. For the basic technique of passing, there was an increase of 9, 53%. For the basic smash technique there is an increase of 3.20%. For the ability to vertical jump there is an increase of 3, 87%.

scholarly journals Didactic peculiarities of technical actions' training method of young volleyball players

2021 ◽  
pp. 46-50
Author(s):  
A. Hakman ◽  
M. Osadets ◽  
N. Lymarenko
Keyword(s):  
Training Session ◽  
Training Model ◽  
Educational Activities ◽  
Developmental Learning ◽  
Direct Training ◽  
Volleyball Players ◽  
Research Findings ◽  
Mental Abilities ◽  
Motor Actions ◽  
Physical Preparation

Training in motor actions is necessary in any activity. In sports, training has its own specifics, the essence of which is that the bulk of the new is learned in the acquisition of various motor actions that take the form of exercise. The goal of this research was to develop a method of teaching motor actions in volleyball using the didactic principles of educational activities and developmental learning and to test its effectiveness in experimental work. Research findings. The results of the influence of the developed method on the ability to differentiate their motor actions and on the physical preparation of young volleyball players are shown. In this research, an attempt was made to find ways to solve the most important tasks facing the coach. These include children's training of the necessary techniques faster and more efficiently than the traditional method based on the main points of the theory of educational activities and developmental learning. Thus besides direct training of techniques in volleyball in experiment we developed the personality and mental abilities of children. To do this, students have mastered the basics of educational activities related to the ability to analyze the subject under study, identify primary and secondary elements and their relationship, monitor their actions, evaluate the results and ways to achieve them. The first classes in the experimental group showed that the motor density of the training session decreased slightly. This happened due to spending more time on theoretical conversations, discussing the arising issues, working with a training model and testing on it of the main parts of the studied motor actions. Subsequently, this was offset by a faster mastery of the technique of motor actions due to greater independence, greater activity on the classes and fewer mistakes.

scholarly journals The characteristics of simmentals by their economically useful traits in the con-ditions of Lviv region

2016 ◽  
Vol 18 (2) ◽  
Author(s):  
V. V. Fedorovych ◽  
T. V. Orihivskyy ◽  
N. P. Babik ◽  
E. I. Fedorovych ◽  
R. S. Oseredchuk
Keyword(s):  
Milk Yield ◽  
Milk Fat ◽  
Live Weight ◽  
Body Parts ◽  
Reproductive Ability ◽  
Service Period ◽  
Minimum Requirements ◽  
The Moment ◽  
Economic Use ◽  
Average Fertility

There are indicators data of body weight, body parts measurements, reproductive ability, milk production, morphological and functional properties of udder, the duration of use and economic reasons of disposal of Simmental cows in terms of Lviv oblast. It was established that the experimental cows by live weight during their growth in all ages have been prevailing minimum requirements of breed standard. They are marked by peculiar to combined breed type of body structure with well–defined not only milk but also meat forms, they had strong skeleton and were quite tall (withers height – 131.1 cm). However, the width of the breast in most cows, that is not enough for combined breed (on an average 41.4 cm). Simmentals age at the moment of the 1st insemination was 19.7, while during the 1st calving – 29.0 months, the duration of the service–period, depending on lactation, was within 96.8 – 112.0, of inter–calving period – within 381.6 – 396.9 day. They were characterized by an average fertility and high adaptablity. Simmentals milk yield, depending on lactation, was 3026,4–3810,2 kg, fat content in milk – 3.76 – 3.81% and quantity of milk fat 113.6 – 145.0 kg. Cows after the 4th calving had the highest milk productivity. During the all studied lactations cows milk yield and quantity of milk fat predominated breed standard. They had a well developed udder. 68.2% cows after the first calving had cupped udder, 25.9% – wash–tub and 6.9% – round udder. Their intensity of milk yield was 1.53 kg/min. Simmental cows duration of economic use in the conditions of Lviv oblast was 1.904.1 day or 5.3 lactations, lifetime yield – 18011, lifetime quantity of milk fat – 688 kg. Most reasons for dropped out of the herd was dysfunction of reproduction (35.7%) and low productivity (21.3%).

scholarly journals Relations of the Republic of Croatia with EU Countries (1992-1999)

2019 ◽  
pp. 6-27
Author(s):  
Аnatolii Demeshchuk
Keyword(s):  
Foreign Policy ◽  
Humanitarian Aid ◽  
European Countries ◽  
Federal Republic Of Germany ◽  
Main Attention ◽  
Western European ◽  
Foreign Media ◽  
The Republic ◽  
The Moment

This article considers a development and peculiar properties of relations of the Republic of Croatia with European Union countries from the moment of this state’s international recognition on 15 January 1992 to the first Croatian president Franjo Tudjman’s death on 10 December 1999. The main attention is paid to those Western European countries, that played the most significant role in dealing with the crisis on the territory of former Yugoslavia and that had the most crucial place in Zagreb’s foreign policy during the first decade of Croatian independence: Federal Republic of Germany, Austria, France, Great Britain, Italy, Sweden and Vatican (however, the two last are not EU members). The attitude of these countries towards Croatia’s diplomatic goals during 1990ies and the dynamics of their relations with Croatian government, that weren’t constant, are analyzed in this article. The special attention is focused on the reasons of firm German and Austrian support for Croatia at the very beginning of its independence and their significant humanitarian aid for Croats during the war. From the other hand, there are explained reasons of skeptical and cold French and British position on Croatian question and the role of the history in Italian-Croatian relations after 1990. And, of course, Croatian problems and real obstacles in relations with Western European countries and with prospective of European integration during the presidency of Franjo Tudjman (that were really pessimistic) are also considered in this article. The newest researches of Croatian and other foreign authors on Croatian foreign policy in 1990ies were used for preparing this small research, as well as materials of foreign media, mostly Western and Croatian.

scholarly journals Factors associated with self-reported failure of binding to release among recreational skiers: an epidemiological study

2016 ◽  
Author(s):  
Gerhard Ruedl ◽  
Karl-Peter Benedetto ◽  
Christan Fink ◽  
Robert Bauer ◽  
Martin Burtscher
Keyword(s):  
Knee Joint ◽  
Epidemiological Study ◽  
Risk Taking ◽  
Knee Injury ◽  
Knee Injuries ◽  
Body Part ◽  
Injury Incidence ◽  
Body Parts ◽  
Factors Associated ◽  
The Moment

Female recreational skiers have twice the knee injury incidence of male skiers and the reported proportion of failure of binding release is considerably higher among females. It remains unclear whether this sex difference belongs only to an injury of the knee joint or also to other body parts. Therefore, a total of 1369 injured skiers (43.1% females) were interviewed on sex, age, date of last binding adjustment, skill level, risk taking behaviour and injured body part and binding release at the moment of accident.Failure of binding release was reported within 39.9% of all cases at the moment of the accident. An actual binding adjustment was significantly associated with a decreasing proportion of failure of binding release. Failure of binding release was significantly higher for females compared to males (51 vs. 32%) and for cautious compared to risky skiers (42 vs. 33%) while sexes did not differ regarding the date of the last binding adjustment. Regarding knee injuries, female skiers showed a higher proportion of failure of binding release compared to male skiers (61 vs. 46%) with an OR of 1.8 (95% CI, 1.2-2.8).  In conclusion, failure of binding release was significantly more frequent in females compared to males, irrespective of the injured body part although sexes did not differ with regard to the date of the last binding adjustment.

Visual Information and Skill Level in Time-To-Collision Estimation

Perception ◽  
1988 ◽  
Vol 17 (5) ◽  
pp. 623-632 ◽  
Author(s):  
Viola Cavallo ◽  
Michel Laurent
Keyword(s):  
Visual Field ◽  
Visual Information ◽  
Peripheral Vision ◽  
Skill Level ◽  
Viewing Time ◽  
Distance Information ◽  
Driving Experience ◽  
Time To Collision ◽  
The Subject ◽  
The Moment

Previous studies on the visual origin of time-to-collision ( Tc) information have demonstrated that Tc estimates can be based solely on the processing of target expansion rate (optic variable τ). But in the simulated situations used (film clips), there was little reliable information on speed (owing to reduced peripheral vision) and distance (owing to the absence of binocular distance cues) available. In order to determine whether these kinds of information are also taken into account, it is necessary to take an approach where the subject receives a more complete visual input. Thus, an experiment conducted on a circuit under actual driving conditions is reported. Experienced drivers and beginners, who were passengers in a car, had to indicate the moment they expected a collision with a stationary obstacle to take place. Subjects were blindfolded after a viewing time of 3 s. The conditions for speed evaluation (normal versus restricted visual field) and distance evaluation (binocular versus monocular vision) by subjects were varied. The approach speed (30 and 90 km h−1) and actual Tc (3 and 6 s) were also varied. The results show that accuracy of Tc estimation increased with (i) normal visual field, (ii) binocular vision, (iii) higher speeds, and (iv) driving experience. These findings have been interpreted as indicating that both speed and distance information are taken into account in Tc estimation. They suggest furthermore that these two kinds of information may be used differently depending on the skill level of the subject. The results are discussed in terms of the complementarity of the various potentially usable visual means of obtaining Tc information.

Types and incidences of sport injuries in male volleyball and handball players

Physiotherapy ◽  
2015 ◽  
Vol 23 (2) ◽  
Author(s):  
Magdalena Mońka ◽  
Magdalena Jagintowicz ◽  
Weronika Chudzik
Keyword(s):  
Ankle Sprain ◽  
Sport Injury ◽  
Demographic Data ◽  
Lower Limbs ◽  
Body Parts ◽  
Sport Injuries ◽  
Physiotherapy Treatment ◽  
Sport Training ◽  
Negative Results ◽  
Volleyball Players

AbstractSport training has many positive aspects but it may also cause negative results. Injuries are intrinsic to the practice of physical exercise. The aim of the study was to determine the types and incidence of injuries in volleyball and handball players. Subject and methods. 71 professional volleyball and handball players took part in the study. The age of sportsmen ranged between 19 and 40 years. The authors’ own questionnaire used in the study-composed of two parts. One incorporated demographic data, and the other contained questions related to types of sport injuries, their locations, types of treatment, and the length of the injury-related break from training. Results. Handball players suffered more injuries than volleyball players. The most frequent injury in both studied groups was ankle sprain. Tearings of muscles, tendons, and ligaments, fractures, and bruising are more common in handball players than volleyball players. Lower limbs were the most affected body parts in both disciplines. Landing was the main reason of damage. The majority of respondents used physiotherapy treatment after the sport injury. Conclusion. There was an average of 3.7 injuries among handball players and 2.9 among volleyball players. The principal injury in both groups was ankle sprain. Tearings of muscles, tendons, ligaments, as well as fractures and bruising are more common in handball players than volleyball players. Lower limbs were the most affected body parts in both groups. Injury to the trunk, head, and neck appeared the least frequently. In both groups of respondents, the injuries were mostly incurred during landing. The majority of participants used physiotherapy treatments after injury. Laser treatment and cryotherapy were the most frequently chosen physiotherapy treatments, with manual therapy used the least.

Sign in / Sign up

Export Citation Format

Share Document