Aim: The paper’s purpose is to determine the existence of differences in anthropometric and postural characteristics in specific sport branches, in this case, to find the ergonomic posture for athletes in the area of volleyball. Differences can be used by professional teams and sport clubs in the selection of new athletes, in improving performance monitoring for the active athletes and in determining specific ergonomic position for each sport. Materials and methods: Participants included in the study were seven active athletes (all male volleyball representatives) aged 16 to 23. They had been involved in a series of non-invasive tests using a postural baro-podometric electronic platform consisting of a pressure plate with 6400 active sensors. This unit examines the pressure orthostatic bipedal (static exam) and balance (stabilometric exam) using Miletrix 2.0 software exams that have produced a number of parameters and indicators. After analyzing and comparing the obtained parameters, analytical and graphical differences were observed between the volleyball athletes’ in regard to posture. Results: The differences occur because of various exercises used in motor development and specific skills needed in each sport. Conclusion: Proving these differences by using a small number of indicators and parameters, applied on just 7 athletes included in the study, opens new ways and offers new opportunities for further scientific analysis of this field, with the final goal of being able to suggest the best suitable sport for an individual based only on a few, fast, non-invasive measurements, able to tell if an individual suits the ergonomic posture specific for that certain sport.

Modern volleyball is characterised by a substantial increase of the attack force and regulation changes support defence. This explains the appearance of the “libero” whose use is optional. In this paper, we aimed at establishing a somatic profile of the “libero” based on volleyball players’ parameters that have played in this position in the volleyball teams that participated in the London 2012 Summer Olympics. The subjects of our research were the “liberos” of the 12 volleyball teams that qualified for the competition. We recorded for these players the following parameters: age, height and weight. The study shows that the mean age of a libero was 31.4 years, with the oldest volleyball player in the Brazilian team (39 years) and the youngest one in the British team (24 years). The mean height of a libero was 184.8 cm, with the tallest libero in the volleyball team of the USA (190 cm) and the shortest one in the team of Great Britain (180 cm). The mean weight of a libero is 81.9 kg, with the highest weight in the volleyball of the United States (90 kg) and the lowest one in the Tunisian volleyball team (74 kg). Age - rather high in the liberos of the studied volleyball teams (above 30 years) point to the expertise accumulated in the long years of practicing volleyball.

Introduction: The second division tournament that allows the teams to move up in the first league had, at the start, the 4 best teams in the country. Taken place in Timisoara, between the 12th - 14th of May 2017, this competition gave us the possibility to follow the way in which UVT Agroland Timisoara improve its own attack. This action, according to the statisticians, had the most weight in obtaining the majority of the points. Aim: This study estaablishes the efficiency of UVT Agroland Timisoara’s attack according to the statistics that were taken out during the 3 games when the team played in the tournament. Moreover, this study highlights the gap between the team in question and the rest of the pack. Heterogeneous in terms of age, the hitters represent both young players (15-16 years old) and also experience ones (28-30 years old). This aspect was managed very well by the head coach who created a perfect connection between young and veteran players. Metods: For carrying out this study we used the following research methods: study of the literature, observational methods, mathematical and statistical methods. Results: In the wining sets the efficiency of the attack was 68% and on the losing sets the attack was just 45%. The average winning points of the opposing team is 17 points per set. This is an indication that the team in question (UVT Agroland Timisoara) wins relatively easy the sets that were monitored. Conclusion: We found that the best efficiency of the attack was 79% in the winning sets. Second best was 62% in the sets that were won very hard. And the lowest efficiency was 46% in the sets that were won relatively easy. This variation of efficiency of the attack is due to some imperfections of the actions prior completing the point, and also the relaxation of the players who think that opposing team is proven to be inferior.

The aim of this paper is to analyse in detail the aspects regarding increased efficiency of the spike in the game of volleyball, given the requirements of a flawless technique that will maximize the potential of the players. Our intention was to verify whether the steps of approach are unfolding in a uniformly accelerated motion and are leading to a vertical leap in the desired parameters at the moment of take off. We also wanted to check if the range of upper body motion is a determinant in the efficiency of the spike consisting in a high striking point and a remakable hitting force. Material and methods: The video footage was obtained from 6 players of "U" Timisoara's volleyball team and 6 international players. For the analysis and processing of the footage the program Kinovea was used and the following parameters were assessed: striking speed(m/s), range of motion (cm and °), flexion between arm and forearm, angle of arm with the vertical at contact, movement speed for the first, second and third approach steps. Results: The international subjects had a 12 cm longer path of the hand in striking motion. Given the shorter segments of "U" Timisoara's players, they compensate by having a 2° larger range of motion, above the elite players. We recorded diferent angles of the spiking arm with the vertical for the 2 groups, namely a mean of 24.5° for the elite players and just 15° for the players of "U" Timisoara. These aspects lead to a striking speed 3m/s higher for the international spikers compared to "U" Timisoara sportsmen. Having measured a uniformly accelerated approach for the international subjects, "U" Timisoara's players don't respond to the same requirement with close values of the second and third step of approach. Key words: analysis, technical execution, efficiency, performance RezumatLucrarea îşi propune să analizeze în detaliu aspectele legate de eficientizarea atacului în jocul de volei, în condiţiile în care sunt îndeplinite cerinţele unei tehnici de execuţie fără fisuri care să valorifice la maximum potenţialul sportivului. Am intenţionat să verificăm dacă succesiunea paşilor de elan se desfăşoară într-o viteză uniform accelerată şi conduce, în momentul efectuării bătăii, într-o desprindere pe verticală la parametrii doriţi. De asemenea, am cercetat dacă amplitudinea mișcării determină o eficienţă superioară a atacului constând într-un punct de lovire cât mai înalt şi o forţă deosebită. Material și metode: Au fost recoltate materialele video de la 6 voleibalişti din echipa "U" Timişoara şi 6 voleibalişti de talie internaţională. Pentru analiza şi prelucrarea materialului video s-a folosit programul Kinovea fiind determinate: viteza de lovire (m/s), amplitudinea mişcării (cm şi °), flexia antebraţului pe braţ, unghiul braţului cu verticala în momentul contactului cu mingea, viteza de deplasare în timpul paşilor 1, 2 şi 3 de elan. Sportivii de elită urmăriţi au prezentat o medie a cursei palmei din momentul pregătitor şi până la lovire cu 12 cm mai mare decât cei de la "U" Timişoara. Date ...