Validade de construto e fidedignidade de uma lista de checagem para análise do saque do voleibol

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.

Impacto De Um Programa De Atividade Física No Desenvolvimento Motor De Crianças Em Situação De Vulnerabilidade Social

“…Assim sendo, é importante o estímulo das habilidades motoras fundamentais durante os primeiros anos de vida (CARVALHO et al, 2020), pois a partir delas os sujeitos poderão realizar a combinação de movimentos complexos e apresentar maior desenvoltura em certas atividades esportivas (COSTA et al, 2018).…”

Pattern recognition: the effect of exercise performance modes on the effectiveness of teaching the vault to 8-year-old boys

“…Multivariate methods of mathematical statistics, including factor and discriminant analysis, are used to investigate the regularities of the process of formation of motor skills. Factor analysis makes it possible to determine the structure and informative indicators of the motor fitness of school students [14,15,16]. Discriminant analysis is suitable both for determining the structure of motor fitness [17,18,19] and for classifying the level of fitness [20, 21,22].…”