Volleyball Coaches Research Articles

Training strategy of explosive strength in young female volleyball players

ObjectiveThe aim of this study was to examine the effect of an 8-week combined jump and ball throwing training program in the performance of upper and lower extremities among young female volleyball players of the high school. Materials and methodsA total of 20 young female volleyball players playing at Scholar Sport in High School at the district level were divided in two groups: the experimental group (n=10; 14.0±0.0 years; 1.6±0.1m; 52.0±7.0kg and 20.7±2.4% body mass) and the control group (n=10; 13.8±0.4 years, 1.6±0.1m; 53.5±4.7kg and 20.3±1.7% body mass). The experimental group received additional plyometric and ball throwing exercises besides their normal volleyball practice. The control group underwent only their regular session of training. ResultsStrength performance in the experimental group significantly improved (medicine ball and volleyball ball throwing: P=0.00; and counter movement jump: P=0.05), with the improvement ranging from 5.3% to 20.1%. No significant changes in strength performance were observed in the control group (P>0.05). ConclusionsThe 8-week combined jump and ball throwing training can significantly improve muscular performance in young female volleyball players. These findings may be useful for all physical education teachers and volleyball coaches.

Applying Game Theory to Volleyball Strategy

Mottley (1954) asserted that applying scientific methods to developing sports strategies could substantially improve team’s performance. Developing an effective volleyball strategy is a sought-after goal of volleyball players and a crucial aspect of team success. This study was focused on applying game theory to construct a volleyball strategy for players to use before a game and to adjust the guidelines included in the strategy during the game. The game theory analysis indicates that no pure Nash equilibrium existed. An analysis of mixed strategy equilibrium provided a set of possibility formulas for arriving at an optimal volleyball strategy. Volleyball players can follow the strategy formulas to perform favorably before the game and make corresponding adjustments based on situational changes during the game. The results indicate that game theory can provide volleyball coaches and players with effective instruction to execute their game plan throughout the competition.

Internal training load: perception of volleyball coaches and athletes

Este estudo pretendeu avaliar a correspondencia entre a percepcao da carga interna de atletas de voleibol de diferentes posicoes com a percepcao da carga planejada pelo treinador e comparar as percepcoes da carga interna de treinamento entre as diferentes posicoes no voleibol. A amostra foi composta por 15 atletas profissionais de voleibol integrantes de uma equipe da Superliga 2012/2013. Os atletas responderam a escala CR-10 de Borg, apos o treinamento, enquanto o tecnico a respondeu antes, conforme o planejou. Para analise dos dados, foi realizado o indice Kappa (K), ANOVA one-way e two-way com post-hoc de Tukey, utilizando os pacotes estatisticos SPSS 19,0 e Statistica 8.0. Os resultados indicaram que todas as posicoes apresentaram bons niveis de concordância com a percepcao do treinador e nao apresentaram diferencas significativas nas percepcoes da carga interna de treinamento. No entanto, ao analisar o percentual das percepcoes dos atletas por intensidade proposta pelo treinador, foi observado que, em treinamentos leves, os atletas superestimam as sessoes, enquanto que, em treinamentos pesados, os atletas subestimam a intensidade. Os resultados permitem concluir que pode haver diferencas entre as percepcoes de tecnicos e atletas e reforcam a importância da adocao de estrategias para o monitoramento/controle diario das cargas de treinamento.

The Golden Era of Volleyball Coach Education

The Golden Era of Volleyball Coach Education

Differentiation between Excellent and First-Grade Players According to a Number of Skilful Variables and Body Measurements in Volleyball

The research aims at : - Determining the most important skilful variables and body measurements for volleyball players ( 1st and excellent grades ) . - Obtaining separately both functions of skilful differentiation and body measurements for volleyball players ( 1st and excellent grades ) . The researchers have adopted the descriptive methodology with a survey style for its convenience to the nature of the research. The research community consists of the volleyball players . The sample has been selected randomly. It includes (29) volleyball players ( excellence Grade ) belonging to (Erbil sport club, Akad Einkawa club, and Shaklawah club ) and (48) 1st grade volleyball players belonging to ( Qaraqoush sport club, Ashourjah sport club , Suolav Al-Jadeed sport club, and Neshtiman sport club) . Thus, the total number becomes (77) players. A number of skilful tests have been applied ,like : the upper serve test , test of reception accuracy from serving , overhand passing test from rear area ,test of diametrical and linear smashing striking accuracy , screen test , and the test of defense skill accuracy from centre (6).On the other hand , the used body measurements are ( body weight , total body length , body length with hands up , arm length with the hand length , leg length , shoulders width , chest width, brachium circumference and thigh circumference ). The results have been processed by using SPSS. So, the researchers have concluded the following results: - Obtaining the equation of differentiation for the skilful variables and extracting three variables ( smashing striking , serve reception , and defending the field ) which have the ability to differentiate the volleyball players ( the excellent and the first grades ). - Obtaining the equation of differentiation for body measurements and extracting three measurements (shoulders width, total body length, and brachium circumference) which have the ability to differentiate the volleyball players ( the excellent and the first grades ). - Using the skilful variables and body measurements resulted from the research as an initial style in selecting the volleyball players ( 1st and excellent grades ) . - The need to pay attention to the skilful variables and body measurements, which have the ability to differentiate the volleyball players to be a base and support for the volleyball coaches. - Taking into account the following differentiating factors in volleyball when selecting and training players in addition to develop all the values as much as possible. The factors are : the skill accuracy of diametrical and linear smashing striketing , measuring reception accuracy from serving , defending the field , shoulders width , total body length and brachium circumference . - Making studies on other morphological and functional variables that effect on players level in volleyball.

Game statistical system and criteria used by Spanish volleyball coaches

The aim of this paper was to study the game analysis used by Spanish volleyball coaches. The sample included 22 coaches from the first and second divisions of the men’s and women’s Spanish competition. The variables studied were: criteria used to evaluate technical and tactical actions, mathematical calculations used to analyse the data, reference values used, adaptations done in the statistical analysis, and situation in which performance is monitored. Descriptive and inferential analyses of the data were done. The use of game statistics is high in volleyball. It is used in practice, competition, opponent scouting, and post-analysis. Volleyball coaches use a category scale to monitor players’ and team’ actions based on the effect on the rally and/or the following game actions. Coaches make adaptations to this scale to fit their needs, perspective, goals, etc. This adaptation varies with regard to type of actions. The types of calculation most used for data analysis and establishing reference values are simple (total values and percentages), probably due to the high number of aspects to monitor or because coaches share the results of the monitoring with players. Coaches individualise their technical-tactical analysis to their needs in order to practice and compete properly.

THE PREVALENCE OF INJURY PREVENTION PROGRAM USE BY HIGH SCHOOL TEAMS

BackgroundThe use of injury prevention programs (IPPs) during organized warm-up activities is encouraged to reduce lower extremity injury risk. However, the prevalence of structured IPP use by high school teams...

“Yes, we can!”: Perceptions of collective efficacy sources in volleyball

Collective efficacy can be defined as a group's shared confidence that they will successfully achieve their goal. We examined which behaviours and events are perceived as sources of collective efficacy beliefs in a volleyball context. In Study 1, volleyball coaches from the highest volleyball leagues (n = 33) in Belgium indicated the most important sources of collective efficacy. This list was then adapted based on the literature and on feedback given by an expert focus group, resulting in a 40-item questionnaire. In Study 2, coaches and players from all levels of volleyball in Belgium (n = 2365) rated each of these sources on their predictive value for collective efficacy. A principal component analysis revealed that the 40 sources could be divided into eight internally consistent factors. Positive supportive communication (e.g. enthusiasm after making a point) was identified as the factor most predictive for positive collective efficacy beliefs. The factor referring to the negative emotional reactions of players (e.g. discouraging body language) was the most predictive for negative collective efficacy beliefs. These findings offer a starting point for the design of continuous measurements of collective efficacy through observation.

High School Volleyball Coaches Instructional Approaches and Perceptions to using Athlete Created Pre-competition Warm-up Music

High School Volleyball Coaches Instructional Approaches and Perceptions to using Athlete Created Pre-competition Warm-up Music Research has shown psychological, psychophysical, and physical effects of music in sport (Bateman & Bale, 2009). However, music has received little attention among sport scholars. The purpose of this study was to examine high school varsity volleyball coaches' pedagogical assumptions and practices of allowing female high school volleyball teams to create and play their own pre-competition warm-up music. Eleven head coaches of female high school varsity volleyball teams who employed athlete created pre-competition warm-up music were interviewed (minimum 45 minutes). All interviews were transcribed then analyzed using open and axial coding (Corbin & Strauss, 2008). All 11 coaches believed that having athletes create and develop pre-competition music positively impacted athlete performance. Analysis further illustrated the coaches believed a connection exists between the use of music and athletic performance across three themes, increased motivation, mood, and team cohesion. Coaches interviewed in this study believed that music provided a consistent and inspirational routine. A limitation of this study is that actual performance was not measured, so future research is needed to examine the actual impact of music on athletic performance, as well as the impact of warm-up music in other sport settings.

The Study of in-Service Training Teaching Goal System for Chinese Senior Volleyball Coaches

Literature, expert interview and Delphi and other research methods were used to systematically arrange and analyze the in-service training teaching goals of Chinese senior volleyball coaches, and the in-service training teaching goal system for Chinese senior volleyball coaches was constructed. In addition, the algorithm of Saaty Relative Importance was used to determine the weight of each indicator system which provided the theoretical basis for optimizing and combining the teaching content, and developing the teaching course system suitable for the actual condition of Chinese volleyball coaches' in-service training.

The Acute Effects of Manipulating Volume and Load of Back Squats on Countermovement Vertical Jump Performance

The acute effects of manipulating the volume and load of back squats on subsequent countermovement vertical jump performance were investigated in the present study. Eleven National Collegiate Athletic Association division II female volleyball players performed 10 countermovement vertical jumps (CMJs) on a force platform 2 minutes after the last squat repetition of a high-load (HL) or high-volume (HV) squat protocol. Two minutes of rest was provided between each CMJ. The HL protocol culminated in the subjects having to perform 3 repetitions with a load equivalent to 90% 1 repetition maximum (1RM) back squat, whereas 12 repetitions with a load equivalent to 37% 1RM were performed in the HV protocol. During an initial familiarization session, knee angles were recorded during a series of CMJs, and these angles were used to control the depth of descent during all subsequent back squats. Jump height (JH) and vertical stiffness (VStiff) were calculated during each of the 10 CMJ, and the change in these variables after the 2 squat protocols was assessed using an analysis of variance model with repeated measures on 2 factors (Protocol [2-levels]; Time [2-levels]). There was no significant difference in JH after the HL and HV protocols (p > 0.05). A significant Protocol × Time interaction for VStiff resulted from the increase after the HL protocol being greater than that after the HV protocol (p = 0.03). The knee angles before the HL and HV protocols were significantly greater than those measured during the initial familiarization session (p = 0.001). Although neither squat protocol provided any benefit in improving JH, the heavy squat protocol produced greater increases in VStiff during the CMJ. Because of the increased VStiff caused by the HL protocol, volleyball coaches may consider using such protocols with their players to improve performance in jumps performed from a run such as the spike and on-court agility.

PROCESSO DE SELEÇÃO E TREINAMENTO DE LEVANTADORES NO VOLEIBOL CATARINENSE INFANTO-JUVENL MASCULINO

The objective was to identify the procedures adopted by catarinenses’ volleyball coaches in the selection and training of youngest male setter’s team. The volleyball club´s coaches, with tradition in the formation of volleyball athletes, participated within the study (n=6). Structuralized interview were used in the data collection. The evidences confirm the importance attributed to the coordinative, technical, cognitive, tactical and psychological factors in the setter´s selection. Beyond individual sessions, the volleyball coaches used complementary sessions in the training for the youngest male setter’s team, in the development of exercises for individual technique, ball time, direction and force. Keywords: Volleyball - Training - Setters

Augmented feedback of experienced and less experienced volleyball coaches: A preliminary investigation

The purpose of the study was to identify effective coaching communication patterns by contrasting the augmented feedback of experienced and inexperienced coaches. Nine experienced and 9 inexperienced volleyball instructors (4 men and 5 women in each group) were videotaped while coaching 11- to 14-year-old female athletes. Analysis of the videotaped behaviors revealed that, compared to the feedback of inexperienced instructors, the feedback of experienced coaches was more specific, verbal, negatively evaluative, related to previous feedback, and provided more often during performance. From an applied perspective, our findings can be used to improve coaches' awareness – and the effectiveness – of their interactive skills.

Table of Contents

Abstract Cover Story Congress takes first step toward financial aid reform New financial aid program is one step closer to reality Student aid legislation at‐a‐glance House legislation gives money for feds to help aid administrators switch to direct lending You Be the Judge Did university breach contract with volleyball coach? Of Counsel Deceptive recruitment, enrollment practices are subject to consumer fraud claims Training Tools Be prepared to act quickly when criminals intrude on campus Follow these tips for emergency notification Lawsuits & Rulings TITLE IX — SEXUAL HARASSMENT Defective sexual harassment policy violates students' rights DISABILITY — ACCOMMODATIONS Denial of academic adjustment results in Title II violation STUDENT AFFAIRS — DISABILITY Unattended disability complaints plunge college in legal hot water DISABILITY — ACADEMIC AFFAIRS University's inflexible rule failed to accommodate veteran's PTSD STUDENT AFFAIRS — RACIAL DISCRIMINATION College's response to offensive graffiti falls short of legal requirements ADMINISTRATION — TORT Lack of control over subcontractor's employee frees college from liability ATHLETICS — WRONGFUL TERMINATION Jury verdict in coach's favor reinstated on appeal ADMINISTRATION — TORT Title alone does not make agency liable for tort on CUNY campus FACULTY — HUMAN RESOURCES Court must address immunity claims before case goes to trial ATHLETICS — TERMINATION Coach can't prove university's actions violated his constitutional rights FERPA — FILE‐SHARING Court orders university to identify alleged file‐sharers CAMPUS SECURITY — DISABILITIES University faces jury trial in student's on‐campus murder ACADEMIC AFFAIRS — PLAGIARISM Court finds for dismissed student, clears him of plagiarism charges Would you like to join our Advisory Board? CAMPUS LEGAL ADVISOR QUICK STUDY

고등학교 배구지도자의 변혁적 리더십과 팀원의 성원만족의 관계

고등학교 배구지도자의 변혁적 리더십과 팀원의 성원만족의 관계

Correlates of Team Performance in Volleyball

The overall performance of a Volleyball team depends on many factors, from which decisive are considered to be the execution of skills that lead immediately to winning or losing the rally. These are lost serves, aces, killattacks, attack errors and kill-blocks. The analysis of these skills in relation to team performance, as expressed by the ratio of sets won to the total number of sets, lead to the formation of two new correlates. These are the serving efficiency ratio (SER), defined as the ratio of lost serves to aces, and the attack efficiency ratio (AER), defined as the number of kill attacks divided by the sum of attack errors and kill-blocks. Analysis of the data collected from all the matches of the male A1 volleyball professional league of 2005-2006 in Greece proved that the two efficiency ratios were better predictors of the teams’ overall performance than the five original variables. The findings lead to clear-cut definitions of norms both for the serving and attack efficiency ratio. The leading teams had a SER of around two and an AER of around three. These criteria are valuable tools especially for Volleyball coaches in deciding for the appropriate tactics of their teams.

The Characteristic of Social Networking in Team Members Caused by Transformational Leadership of Volleyball Coaches in University Teams

The Characteristic of Social Networking in Team Members Caused by Transformational Leadership of Volleyball Coaches in University Teams

A study concerning the actual condition of the stress that the volleyball coach receives during the game

A study concerning the actual condition of the stress that the volleyball coach receives during the game

Extended Book Review: She Can Coach! Tools for Success from 20 Top Women Coaches

OVERVIEW The book is divided into four sections: i) professional foundation and conduct; ii) personal investment and self-direction; iii) program implementation and management; and iv) relationship building and promotional activities. The editor, Cecile Reynaud, spent 26 years as head volleyball coach at Florida State University and was motivated to pursue this book as a project by the lack of books written by female coaches. It is noted in the preface that the percentage of female teams coached by women has fallen from 90% in 1972 to 44% in 2000.

Verbal Aggressiveness and State Anxiety of Volleyball Players and Coaches

The purpose of the present study was to examine the relation of verbal aggressiveness and state anxiety (somatic, cognitive, and self-confidence) in sports settings based on the ratings by volleyball coaches and their athletes. The sample consisted of volleyball athletes (n=208; 98 men and 110 women) and their coaches (n=20; 16 men and 4 women). Analysis showed that male volleyball players rated somatic anxiety higher and were more affected by the verbal aggressiveness of their coaches than female volleyball players. No mean differences were significant for male and female coaches on somatic or cognitive anxiety, self-confidence, or verbal aggressiveness. Also, correlation between subscale scores for male and female volleyball players and coaches was found. The correlations of verbal aggressiveness with self-confidence and anxiety were positive for these athletes, leading them to better behavior. This relationship needs further examination in sport settings.