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Analysis and Evaluation of Defensive Team Strategies in Women’s Beach Volleyball – An Efficiency-Based Approach

100%

Seweryniak T., Mroczek D., Łukasik Ł.

Human Movement

2013

vol. 14

issue 1

48-55

Purpose. The aim of this study was to analyze and evaluate beach volleyball defensive strategies in terms of how often various tactics were employed, their effectiveness, reliability, and overall efficiency based on a sample of elite female volleyball players. Methods. A sample of 746 defensive actions performed by various teams that competed in the 2008 Summer Olympic Games (Beijing, China), the 2009 World Championships (Stavanger, Norway), and the 2009 and 2010 Swatch FIVB Beach Volleyball World Tour (Stare Jabłonki, Poland; Seoul, South Korea) were analyzed in terms of what defensive systems were employed and their outcomes. Results. Fourteen different defensive systems were used by the teams during defensive play. Out of the fourteen systems, four accounted for almost 75% of all defensive action. The most commonly used defense strategies were selected for more detailed analysis in terms of their activity, effectiveness, and reliability. Conclusions. One defensive system in particular was found to be the most prominent in terms of being the most commonly used as well as efficient among all of the observed systems; high-level teams should place additional focus on mastering this system. Nevertheless, effective team strategy should also include less commonly used systems as a way to take an opponent by surprise by the use of non-standard strategy.

The Effects of a Six-week Plyometric Training Program on the Stiffness of Anterior and Posterior Muscles of the Lower Leg in Male Volleyball Players

64%

Mroczek D., Superlak E., Seweryniak T., Maćkała K., Konefał M., Chmura P., Borzucka D., Rektor Z., Chmura J.

Central European Journal of Sport Sciences and Medicine

2017

vol. 20

issue 4

107-115

The study assesses the effects of a six-week plyometric training program (PT) on muscle stiffness in the dominant and non-dominant leg in male collegiate volleyball players. The study group comprised 16 volleyball players who had played collegiate volleyball for at least four years. For six consecutive weeks, twice a week, the players undertook a plyometric program of 60-min training sessions, each preceded with a specialist warm-up. The analysis of the anterior muscles of the right and the left lower leg revealed a significant increase in stiffness in the muscles of the right leg and the left leg. No significant differences were found between the anterior muscles of the left lower leg and the right lower leg in particular weeks of the training program. The analysis of the posterior lower leg muscles revealed no significant differences, either in the consecutive weekly training microcycles or between the left leg and the right leg. The measurement of muscle tone and biomechanical properties of muscles can be used as a fast and direct assessment of plyometric training-related muscle fatigue. A similar level of muscle stiffness in both lower legs (symmetry) is a reflection of the appropriate selection of plyometric training loads.

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1 Central European Journal of Sport Sciences and Medicine

1 Human Movement

1 2017

1 2013

2 Mroczek D.

2 Seweryniak T.

1 Borzucka D.

1 Chmura J.

1 Chmura P.

1 Konefał M.

1 Maćkała K.

1 Rektor Z.

1 Superlak E.

1 Łukasik Ł.

Search results

Analysis and Evaluation of Defensive Team Strategies in Women’s Beach Volleyball – An Efficiency-Based Approach

The Effects of a Six-week Plyometric Training Program on the Stiffness of Anterior and Posterior Muscles of the Lower Leg in Male Volleyball Players