OBJECTIVE High voice users (individuals who demonstrate excessive or loud vocal use) are at risk for developing voice disorders. The objective of this study was to examine, both acoustically and perceptually, vocal changes in healthy speakers after an acute period of high voice use. METHODS Members of a university women's volleyball team (n = 12) were recorded a week before (pre) and week aft...

The present investigation finds the relationship between selected Anthropometric variables and performance of university level Volleyball Players. For the purpose of the study, thirty (N=30) volleyball players were selected as subjects from the North Zone Inter-University Volleyball Tournament. The selected Anthropometric measurements were taken with the help of vernier calipers and lange’s ski...

The purpose of the study was to examine the incidence and mechanisms of acute volleyball injuries, with particular reference to possible risk factors for ankle injuries. Coaches and players in the top two divisions of the Norwegian Volleyball Federation were asked to keep records of exposure time and all acute volleyball injuries causing a player to miss at least one playing day during one seas...

[Purpose] The purpose of this study was to investigate differences in jumping ability and lower limb balance ability elicited by plyometric training and vibration exercise, of volleyball players with and without ankle injuries, which frequently occur among Korean professional volleyball players. [Subjects and Methods] Twenty-eight volleyball players were divided into the following groups: plyom...

We analyze the problem facing the team that wins the toss at the deciding fifth set of a volleyball match. The team’s decision to serve or to receive the service can make a difference to the eventual outcome of the match. We characterize the conditions under which it is better to serve or to receive the service at that set. These conditions are obtained by first expressing the exact probability...

INTRODUCTION: Nowadays, government officials seek ways to monitor, control, and manage events and crises due to the concerns of the general public and social media as informative tools. Regarding this, the present study aims to identify and analyze the factors affecting the crisis incidence in Iranian stadiums. METHODS: The present interpretive qualitative research was performed based on a gro...

Background: Physical inactivity is recognized as a risk factor for coronary artery diseases. The aim of present study was to observe changes induced by isometric hand grip exercise on cardiovascular responses in young healthy trained female Volleyball and Basketball players. Methods: This study was carried out at Department of Physiology, J.S.S. Medical College and Hospital. Hundred and eighty ...

The aim of this study was to investigate the relationship between locus of control with coping styles of problem-focused, excited -focused and avoidance among volleyball young men, Karaj City, Iran. The research method was correlation-descriptive that was implemented as monitoring. The population of this research was 200 volleyball young men that several teams of participating teams were chosen...

Countermovement jumps loaded with a weighted vest are often used for the training of lower body power to improve jump performance. However, it is currently unknown how this added load affects the lower extremity kinematics and kinetics, in particular whether this results in an increased injury risk. Therefore, the purpose of this investigation was to determine how lower extremity kinematics and...

The purpose of this study was to determine and to compare characteristics of the lower limb extension musculature in Chilean indoor and beach volleyball players and the muscular contribution during the CMJ. The sample was composed by 13 subjects belonging to the Chilean elite beach and indoor volleyball. The subjects performed 3 CMJ jumps for average determination of the height of the jump, ecc...