BACKGROUND Jumper's knee is a common and troublesome condition among senior volleyball players, but its prevalence among elite junior players compared to matched non-sports active controls is not known. OBJECTIVE To clinically, and by sonography, examine the patellar tendons in elite junior volleyball players (15-19 years) at the Swedish National Centre for volleyball and in matched controls....

Adopted the methods of literature investigation, tape-record-statistics, expert interviews, etc, this study conducted the technique statistics and analysis on the video of the competition of the Guangdong and Tianjin woman volleyball teams in 2012-2013 National Women Volleyball League Finals. The Game Rhythm advantages and disadvantages of Guangdong and Tianjin woman volley-ball teams were prop...

Aims: Hormones' response to competition and their relation to sport matches have been extensively investigated in male and less widely in female athletes. Stress is an irresistible part of every sport match which is mostly caused by competition. In the present study, female volleyball players were examined for changes in dehydroepiandrosterone (DHEA) and salivary cortisol in response to competi...

With the purpose of determining the factor structure of explosive power, as well as the influence of each factor on situational efficiency, 56 young female volleyball players were tested using 14 tests for assessing nonspecific and specific explosive power. By factor analysis, 4 significant factors were isolated which explained the total of over 80% of the common variability in young female vol...

Volleyball games worldwide have developed into aggressive volleyball games involving various types of attacking techniques. Among the various attacking techniques, the moving spike is most likely to cause body imbalance. When volleyball players perform a moving spike, to acquire more time and space when hitting the ball, they typically change their attack angle, timing, and position continually...

The area of the Faculty Sports Science, University Cenderawasih is embodiment Campus Open Space that must consider comfort for needs local users. This consists lecture buildings, entrepreneurship football stadiums, as well several sports arenas such volleyball, futsal, basketball, tennis and badminton arenas. Science has an 5 hectares in which there open space. purpose this study to determine l...

OBJECTIVE In overhead sports such as volleyball, baseball, or tennis shoulder problems are very common. The aim of this study was to identify features which may correlate with shoulder problems in volleyball attackers. METHODS 30 competitive volleyball attackers (mean age 25 years) were included in the study; 15 were suffering from shoulder pain and 15 had no history of shoulder pain. The res...

PURPOSE This case study evaluated the effect of repeated lateral movement and jumping training on repeated effort ability in a group of national team male volleyball players. METHODS Twelve volleyball players were assessed on their volleyball-specific repeated movement and jumping abilities using a volleyball-specific repeated effort test (RET) before and after 12 weeks of training. The athle...

The purpose of this study is to develop an evaluation system for the executive judgment of volleyball referees. We present computer-assisted techniques to digitalize volleyball games, make judgments, and generate evaluation results. Through the help of senior volleyball referees, we first make classification to the recorded video volleyball games according to various foul situations and apply V...

BACKGROUND Shoulder pain is becoming increasingly problematic in young players as volleyball gains popularity. Associations between repetitive motion and pain and overuse injury have been observed in other overhand sports (most notably baseball). Studies of adult athletes suggest that there is a shoulder pain and overuse problem present in volleyball players, but minimal research has been done ...