Revista Brasileira de Cineantropometria & Desempenho Humano
On-line version ISSN 1980-0037
DEPRA, Pedro Paulo and WALTER, Dalker Roberto. Developmental assessment and performance analysis of vertical jump in schoolchildren. Rev. bras. cineantropom. desempenho hum. [online]. 2012, vol.14, n.4, pp. 460-469. ISSN 1980-0037. http://dx.doi.org/10.5007/1980-0037.2012v14n4p460.
The vertical jump involves different levels of skill complexity and offers the individual a wide range of motor experiences. This study aimed to determine which movements in the developmental sequence performed by schoolchildren are associated with age and vertical jump performance. The sample consisted of 137 elementary school children of both sexes, aged 7-10y, with height of 1.19-1.63 m, and weight of 20-60 kg. All children were selected from first- to fourth-grade classrooms of a public school of the city of Maringá, state of Paraná, Brazil. A Gallahue & Ozmun matrix and a jumping platform were used as research instruments. During the experiment, each child performed three jumps. Simultaneous and coordinated upward arm lift was observed in 7-year-old children. Nine-year-old children showed inconsistent preparatory crouch and lack of coordination between upper limb and trunk/lower limb movements. A prevalence of upper limb motor acts was observed when considering the significant associations found between elements of the developmental sequence and vertical jump performance. In children aged 7-10y, age group and jumping performance are associated with elements of the developmental sequence of total body configuration, especially with regard to the upper limbs.
Keywords : Biomechanics; Child development; Motor skills.