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document
Influence of ball weight on junior high school girls ' volleyball performance . This study was designed to investigate the influence of a lighter ball ( Tachikara Volley Lite ) on 72 seventh-grade girls ' tournament game play and pretest-to-posttest improvement for a 16-day volleyball practice period . Two intact classes were randomly assigned to groups , one of whom used lighter balls during skills progressions while a second used regulation balls . All students used regulation balls during tournament game play and skills tests . Both groups significantly improved the forearm pass from pretest to posttest . Analysis of covariance indicated no significant differences between groups on posttest means for any skill . A 2 x 6 ( treatment x game day ) analysis of variance indicated that the group practicing with lighter balls had significantly more correct sets and a higher average daily success rate for the set and underhand serve on game days than the group using a regulation ball .
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Intervention_Educational
ball weight
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Intervention_Educational
influence of a lighter ball ( Tachikara Volley Lite ) on 72 seventh-grade girls ' tournament game play and pretest-to-posttest improvement for a 16-day volleyball practice period
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Intervention_Educational
lighter balls
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Intervention_Educational
regulation balls
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Intervention_Educational
regulation balls
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Intervention_Educational
lighter balls
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Intervention_Educational
regulation ball
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Outcome_Other
performance
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Outcome_Other
influence
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Outcome_Other
forearm pass
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Outcome_Mental
Analysis of covariance
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Outcome_Other
correct sets
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Outcome_Other
higher average daily success rate
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Participant_Age
junior high school
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Participant_Sex
girls
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Participant_Sample-size
72
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Participant_Age
seventh-grade
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Participant_Sex
girls