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Relationship between Block Constraints and set outcome in Elite Male Volleyball

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Abstract:

The purpose of this study was to analyze some block constraints in Elite Male Volleyball. So, were established the relationship between: (i) blocking system and block effectiveness; (ii) blocking system and block opposition; (iii) block effectiveness and set outcome. There were analyzed 4351 sequences, corresponding to 97 sets, of twelve men's national teams participating in Final Phase of World Cup 2007. The chi-square with adjusted residual to test the association between the variables was applied. For reliability, results showed percentages of agreement above 80%. The results showed a significant relationship between block effectiveness and blocking system. The man-to-man blocking system increase the occurrence of block-out and block continuity 2 and reduce the occurrence of block continuity 3 and block point; the zone-blocking system increases the occurrence of block point and reduces the occurrences of block-out. Moreover a significant relationship between blocking system and the numbers of blockers were established; the man-to-man blocking-system increase the occurrence of single block and reduce the occurrence of double and triple block; zone-blocking system increase the occurrence of double and triple block and reduce the occurrence of open double and single block. Block effectiveness and set final outcome, showed an independent relationship.

Keywords: GAME ANALYSIS

Document Type: Research Article

Publication date: December 1, 2009

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uwic/ujpa/2009/00000009/00000003/art00003
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