MONITORING BALL SPEED OF THE VOLLEYBALL SPIKE THROUGHOUT THE SEASON FOR ELITE WOMEN´S VOLLEYBALL PLAYERS (original) (raw)
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VALIDITY OF THE STANDING SPIKE TEST AS A MONITORING PROTOCOL FOR FEMALE VOLLEYBALL PLAYERS
Biology of Sport, 2012
In volleyball, the spike is one of the actions that are most correlated with the set's result because it is the technique where the most points are awarded . The spike's effectiveness depends on several factors, such as the trajectory of the set, opponent positioning (blockers and second row players), the physical and technical abilities of the attacker, etc. From the perspective of technique execution (i.e. biomechanical analysis), the three basic aspects that affect the efficiency of the spike's basic technique are : a) hit height, b) speed of the ball, and c) direction.
Factors Correlated With Volleyball Spike Velocity
American Journal of Sports Medicine, 2005
Volleyball is a complex discipline with high technical, tactical, and athletic demands on the players. Serving, passing, and setting the ball are accompanied with spiking or attacking actions. 7 To achieve success in volleyball, it is desirable to possess a strong offense, and the main form of attack in the modern game is the smash, or spike. 11 Starting with an approach followed by a vertical jump, one of the objectives of the volleyball spike is to hit the ball at the highest possible speed. Unbelievably, a highly skilled attacker with 16 to 20 hours of weekly practice time spikes, for example, about 40 000 times a year. Considering the various spiking requirements, highskilled volleyball player management justifies multidisciplinary assessments aimed to optimize performance and contribute to injury prevention. The purposes of this study were as follows: (1) to assess the isokinetic strength developed by the dominant shoulder and elbow of high-level volleyball players, (2) to establish possible relationships between the isokinetic parameters or physical features and field performances such as spike velocity, and (3) to compare volleyball players in the first division (N1) with volleyball players in the second division (N2). Possible implications of our findings for training optimization will obviously take into account shoulder injury prevention and treatment features.
Effects induced through the use of physical and motor tests in volleyball
Journal of Human Sport and Exercise - 2019 - Spring Conferences of Sports Science
The purpose of the study was to analyse and evaluate the jumping ability and the fundamental technical of the float serve in volleyball in 3 areas of the opposing camp (1-6-5), in order to evaluate the effectiveness of a working method. The study was performed on a sample of 12 male volleyball players (Category: Under 20). Data were collected in two periods (September and October), subjecting the players to intensive technical and physical work. At the beginning of the training period anthropometrics data (weight, height, BMI, reach to one hand) and the values at the vertec jump test were collected. Each player carried out 90 float services (3 series of 30 float serves, respectively to specific areas of the opponent's field 1-6-5) to check out if there is continuity of precision towards the three zones or if there is a significant difference. The results show, after four weeks of intensive training, an improvement in jumping ability at the Vertec test. It is hypothesized a not significant difference in the performance by the group of players, in terms of precision, towards the three opposing areas and a positive difference in pre-training (September) and post-training (October) performances. The monitoring of the training process will allow to estimate the effects induced through the use of physical and motor tests, allowing the coaches to design and choose the methodology and the appropriate training load, for an effective performance.
Development of a Repeated-Effort Test for Elite Men's Volleyball
Purpose: The authors conducted a study to develop a repeated-effort test for international men's volleyball. The test involved jumping and movement activity that was specific to volleyball, using durations and rest periods that replicated the demands of a match. Methods: A time–motion analysis was performed on a national team and development national team during international matches to determine the demands of competition and thereby form the basis of the rationale in designing the repeated-effort test. An evaluation of the test for reliability and validity in discriminating between elite and sub-elite players was performed. Results: The test jump height and movement-speed test parameters were highly reliable, with findings of high intraclass correlations (ICCs) and low typical errors of measurement (TE; ICC .93 to .95 and %TE 0.54 to 2.44). The national team's ideal and actual jump height and ideal and actual speeds, mean ± SD, were 336.88 ± 8.31 cm, 329.91 ± 6.70 cm, 6.83 ± 0.34 s, and 7.14 ± 0.34 s, respectively. The development national team's ideal and actual jump heights and ideal and actual speeds were 330.88 ± 9.09 cm, 323.80 ± 7.74 cm, 7.41 ± 0.56 s, and 7.66 ± 0.56 s, respectively. Probabilities of differences between groups for ideal jump, actual jump, ideal time, and actual time were 82%, 95%, 92%, and 96%, respectively, with a Cohen effect-size statistic supporting large magnitudes (0.69, 0.84, 1.34, and 1.13, respectively). Conclusion: The results of this study demonstrate that the developed test offers a reliable and valid method of assessing repeated-effort ability in volleyball players.
Health, sport, rehabilitation
Purpose. This study aims to find an equation for accurately predicting the skills of spike skill beating (straight and diagonal), and the blocking skills about specific physical measures physical and kinetic skills of volleyball players. The skill of spike and skill blocking is one of the basic skills in volleyball, whose performance requires high compatibility and balance between physical measurements and physical skills Material and Methodology. Moreover, monitoring shows that no statistical equation predicts the punch and squeezes talents that hinder the volleyball sector for the age group (14-16). In the youth volleyballers centers in Erbil, the number of players was (75) out of (106) participants (76% of the total population). 25 Players were excluded because they did not complete the test requirements. Results. The manuscript reached the following results: It was possible to identify the values of some physical measurements and physical and motor abilities affecting the leve...
fsp.uni-lj.si
Povzetek S študijo smo želeli razviti metodo analize vzorcev skokov, da bi lahko kvantificirali tipe skokov in njihovo povezavo z dejanskimi tekmovanji, uporabili pa smo podatke z Evropskega prvenstva v odbojki na mivki v Valenciji 2006. Uporabili smo kvantitativno analizo igre desetih udeleženk prvenstva. Analiza je zajemala posnetke 670 skokov s štirih tekem. Iz posnetkov izhajajoče kvantitativne parametre smo obdelali s pomočjo programa SPSS 13.0. Prvi značilni rezultat primerjave je pokazal, da je bilo povprečno število skokov (Povprečje±SD) 167.5±38.53 na tekmo, 4.48±5.93 na set in 4.41±1.01 na točko. Druga skupina rezultatov je pokazala na razpon deleža različnih igralnih akcij, med katerimi je 71% delež pripadel skokom pri napadalnem udarcu, 20% skokom pri servisu in 9% skokom pri blokih. V primerjalni analizi smo primerjali dejanski čas igre s kvantifikacijo števila skokov na tekmo, set in točko. Menimo, da je poznavanje števila skokov nujno za razumevanje specifičnih vzorcev igranja odbojke na mivki, povezane s časom.
Monitoring Training Load and Recovery in Volleyball Players During a Season
Revista Brasileira de Medicina do Esporte
Introduction Monitoring training loads, along with the recovery status, is important for preventing unwanted adaptations. Knowledge of these variables over volleyball seasons is still scarce. Objective To monitor and describe the training load and recovery status of volleyball players over a competitive season. Methods The sample consisted of 14 professional volleyball players. For the entire season, the training load was monitored daily by the SPE method during the session, and the recovery status was monitored by TQR and QBE on the first and last days of training for the week. Results There was a decrease in training load between Preparatory Period I and Competitive Period I (p = 0.03), followed by an increase in Preparatory Period II (p <0.001) and a new decrease in Competitive Periods II (p = 0.01 ) and III (p = 0.003). There was a significant reduction between Pre-TQR and QBE and Post-TQR and QBE in all mesocycles. In the Pre-TQR, there was a reduction between Preparatory Pe...
1996
INTRODUCTION -The Purpose of this study was to: a) identify the strength and/or speed variables that determine jumping ability and b) evaluate the effectiveness of a training program attempting to modify these variables. METHODS-Sixteen highly ski lied female volleyball athletes, equally divided into control and experimental groups, were tested tor: a) maximum knee joint extension isometric strength (F.....' knee and hip joints at 90°), b) counter-movement vertical jump with (CMJ1) and without (CMJ2) the use of the arms, c) vertical jump from a flexed (hip, knee and ankle joint) position (SJ), without counter-movement, and d) drop vertical jump (OJ), dropping fram a height of 40cm. Regression analysis revealed that the best predictors (p<O.01) for CMJ1 were: a) the propulsive time in SJ, b) the ratio between propulsive time and flight time in CMJ2, e) F.... during the first 60msec, and d) time to F1IlOJI' Subsequently, the experimental group participated in an 8 week trai...
Jumping Profile of Elite Volleyball Male Players by Field Positions during a Competitive Season
Medicine & Science in Sports & Exercise, 2008
PURPOSE: To determine a jumping profile of elite volleyball male players by field positions during a competitive season. METHODS: Twelve Argentine professional volleyball male players (age: 28.6 ± 5.4 years, weight: 92.4 ± 8.8 kg., height: 192.0 ± 8.3 cm.) were studied during a whole competition phase. They played 59 matches in 36 weeks and the average of matches played per week was 1.6. Fifty five official matches were analyzed (in Argentina: 36 (National League), 9 (Association Cup), 3 (National Tour); in Brazil: 4 (Mercosur Cup), 3 (Unisul Cup). Video recordings were taken from the back of the court and all matches were stored digitally. 1/30 seconds frame by frame analysis was used to determine: 1) frequency of jumps per player who were grouped according to 4 field positions: setter (SE), wing attacker (WA), middle blocker (MB) and receptor attacker (RA), 2) percentage of jumps in volleyball skills (spiking, spiking approach, jump service, blocking and setting) by player, 3) work time during the set: total set time minus resting time (time outs, players changing time, time to reach the ball to the serve). Total amount of jumps and total work time was calculated per subject. Work-rate profile (WRP) during competition was determined by the quotient between total amount of jumps and work time. RESULTS 23865 volleyball skill jumps were collected. The blocking and spiking were the skill jumps more frequently used by the players (37.9 % and 21.7 % from the total). Jump service was 17.6 % and setting jump 14.5 %. Spiking approach jump were the less used (8.7 %). An average of 1.25 jumps per minute was determined as WRP. ANOVA (p<0.05) showed no significant differences among playing positions for WRP. SE had slightly higher WRP than the others players (1.62 j/m) but most of the jumps were made in the setting (68.6 % from the total). MB and WA were similar (1.35 j/m vs.1.33 j/m) but the former used the blocking (46.5 %) and spiking approach (23.8 %) significantly more (p<0.05) compared to the latter and others positions (except blocking with RA). WA performed spiking (46.7 %) and blocking (35.5 %) as the primary skill used. In contrast, RA had the lower WRP (1.12 j/m) with blocking jump at first (44.9 %) and spiking jump (32.8 %) in second order. WA and RA used spike jumps significantly more than MB and SE (p<0.05). CONCLUSIONS: The findings of this study indicate that the work-rate profile may not vary according to field position in the game, but there is an important difference in the percentage of jumps in volleyball skills more frequently performed. Specific movement patterns imposed by positional roles on its players could have an impact on the performance profile. Coaches and trainers should consider these differences on their training programs.
Twelve-Month Training-Induced Changes in Elite International Volleyball Players
Journal of Strength and Conditioning Research, 2009
Sheppard, JM, Chapman, DW, Gough, C, McGuigan MR, and Newton, RU. Twelve-month training-induced changes in elite international volleyball players. J Strength Cond Res 23 : 2096-2101, 2009-The purpose of this investigation was to examine the strength, power, and anthropometric contributors to vertical jump performances that are considered specific to volleyball success, including countermovement vertical jump (CMVJ) and spike jump (SPJ), by examining changes across 12 months in elite volleyball players. Anthropometry (height, mass, +7 skinfolds), vertical jump ability (CMVJ, SPJ, and depth jumps from 35 cm), kinetic and kinematic data from an unloaded and loaded (body mass + 50%) jump squat were assessed before and after 12 months of training in 20 elite male volleyball players. To examine the association between the change in each of the strength, power, and anthropometric variables with the changes in CMVJ and SPJ, a correlation analysis of the percent change of each variable with the percent change in CMVJ and SPJ was performed. A significant correlation (r = 0.47; p = 0.04) was observed between changes in CMVJ and SPJ. Significant (p = 0.006-0.02) improvements in CMVJ were associated with increased peak force in the unloaded (r = 0.61) and loaded jump squat (r = 0.59) and greater relative power and peak velocity in the loaded jump squat (r = 0.49 and 0.51, respectively). The significant increase in CMVJ was strongly associated (r = 0.865; p , 0.001) with an improved depth-jump ability. Significant (p = 0.003-0.03) increases in SPJ were related to increases in relative power (r = 0.64), peak force (r = 0.46), and peak velocity (r = 0.49) in the loaded jump and improved depth-jumping ability (r = 0.591). This study demonstrates that, in an elite population of volleyball players, stretch-shortening cycle performance and the ability to tolerate high stretch loads, as in the depth jump, are critical to improving jumping performance.