Abstract
This study aims to investigate the construct validity and reliability of the checklist for qualitative analysis of the overhand serve in Volleyball. Fifty-five male subjects aged 13-17 years participated in the study. The overhand serve was analyzed using the checklist proposed by Meira Junior (2003), which analyzes the pattern of serve movement in four phases: (I) initial position, (II) ball lifting, (III) ball attacking, and (IV) finalization. Construct validity was analyzed using confirmatory factorial analysis and reliability through the Cronbach’s alpha coefficient. The construct validity was supported by confirmatory factor analysis with the RMSEA results (0.037 [confidence interval 90% = 0.020-0.040]), CFI (0.970) and TLI (0.950) indicating good fit of the model. In relation to reliability, Cronbach’s alpha coefficient was 0.661, being this value considered acceptable. Among the items on the checklist, ball lifting and attacking showed higher factor loadings, 0.69 and 0.99, respectively. In summary, the checklist for the qualitative analysis of the overhand serve of Meira Junior (2003) can be considered a valid and reliable instrument for use in research in the field of Sports Sciences.
Highlights
The Volleyball serve is a predominantly closed sports skill, which allows testing basic motor learning issues, but with a task that has great control of variables and high ecological validity
The present study aims to verify the construct validity and reliability of the checklist proposed by Meira Júnior[10] to analyze the pattern of movement of overhand serve in Volleyball
The construct validity was supported by the confirmatory factor analysis with the Root Mean Squared Error of Approximation (RMSEA) results (0.037 [confidence interval 90% = 0.020-0.040]), Comparative Fit Index (CFI) (0.97), Tucker-Lewis Index (TLI) (0.95), indicating good fit of the model
Summary
The Volleyball serve is a predominantly closed sports skill, which allows testing basic motor learning issues, but with a task that has great control of variables and high ecological validity. Regarding Motor Behavior, researchers have used it to investigate the effect of factors that influence the acquisition of motor skills, such as contextual interference[2,3], performance knowledge[4,5] and demonstration[6]. Performance on this ability can be measured through movement product or process measures. Product measures analyze the outcome of the motor action quantitatively, while process measures evaluate qualitative aspects related to the movement pattern[7]. In most of the experimental studies that have used the volleyball serve task, it has been more common to evaluate the product of the action, that is, the serve accuracy
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