Design and validation of an observational instrument for technical and tactical actions in beach volleyball

Technical and tactical actions determine performance in beach volleyball. This research develops and tests an instrument to monitor and evaluate the manner of execution and efficacy of the actions in beach volleyball. The purpose of this paper was to design and validate an observational instrument to analyze technical and tactical actions in beach volleyball. The instrument collects information regarding: a) information about the match (context), b) information about game situations, c) information about technical situations (serve, reception, set, attack, block, and court defense) in relation to player execution, role, manner of execution, execution zone, and efficacy, and d) information about the result of the play (win-lose and way point is obtained). Instrument design and validation was done in seven stages: a) review of literature and consultation of experts; b) pilot observation and data analysis; c) expert review of instrument (qualitative and quantitative evaluation); d) observer training test; e) expert review of instrument (content validity); f) measurement of the ability of the instrument to discriminate the result of the set; and g) measurement of the ability of the instrument to differentiate between competition age groups. The results show that the instrument allows for obtaining objective and valid information about the players and team from offensive and defensive technical and tactical actions, as well as indirectly from physical actions. The instrument can be used, in its entirety or partially, for researching and coaching purposes.

Disaster Response to the Release of Biohazardous Agents: Instrument Development and Evaluation of a Firefighter's Exercise

Introduction:The release of biohazardous agents could affect many people. Preparedness is crucial for adequate responses to accidental or deliberate release of biohazardous agents. It is believed that exercises based on simulated incident scenes are effective methods for the training of firefighters and biohazard response teams. Structured evaluations are important methods used to identify areas of ineffectiveness and to assure the quality of responses to releases of biohazards.Methods:A local fire department conducted a full-scale biohazard exercise in an elementary school. The firefighters practiced prohibiting entry to the area, establishing security zones, evacuating victims, assessing hazards, preventing further dissemination, and sampling and keeping the suspicious material in safe custody.Trained observers systematically evaluated the exercise following a standardized evaluation protocol. A set of data collection templates were created based on standard operating procedures extracted from current guidelines.Results:There were 60 firefighters, eight members of the incident command, 16 simulated victims, and 18 trained observers that participated in the exercise. Out of 31 standard operating procedures, 20 were in accordance with the guidelines, 10 were performed incorrectly, and one was not applicable. Major problems related to the assessment and handling of the suspicious material, the use of protective equipment, and decontamination of victims. Reasons for incomplete and/or conflicting documentation included insufficient knowledge and training of observers, imprecise instructions about documentation, and the size of observation zones.Conclusions:Intensive education and training of response activities is necessary. Each fire department should perpetually reassess their technical equipment and specific skills and their communication and command structures. The applied documentation system performed well in disclosing discrepancies between observed response activities and current recommendations. Using external observers provided transparent and independent data. However, intensive observer training is necessary. Observer training should include detailed, written instructions and short guidelines that could be available during the exercise.