Combined qualitative and quantitative analysis of jumping in typically developed preschoolers
| Autor: | Ching-Ling Wang, 王靖泠 |
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| Rok vydání: | 2012 |
| Druh dokumentu: | 學位論文 ; thesis |
| Popis: | 100 Preschool period is critical for children in developing their fundamental movement skills, which would influence the development of specialized movement skills afterwards. Jumping is a functional but diverse movement skill, with the various types of single-leg hop, board jump and vertical jump. These different types of jumping also widely used in different sport participations. This study aimed to discuss the correlation between quantitative parameters and qualitative scores in standing long jump and vertical jump focusing on four- to six- year-old preschoolers, and also to investigate the relations between quantitative parameters of jumping and motor development. A vedio-based motion capture system and Preschooler Gross Motor Quality scale (PGMQ) were used to obtain the quantitative and qualitative measures, respectively. The results showed no significant difference between five-year-old group and six-year-old groups in takeoff velocity, takeoff angle, trunk inclination angle at takeoff, trunk extension range, jump distance and jump height. For standing long jump, the takeoff angle and trunk inclination angle before takeoff were moderately correlated to the jump distance and quality component score of horizontal jump. This indicated that takeoff angle and trunk inclination angle before takeoff were critical quantitative parameters in both qualitative and quantitative evaluation of standing long jump. The standing long jump performance was significantly associated with several quantitative parameters, including takeoff velocity, takeoff angle, thigh angle at touchdown, trunk inclination angle, trunk extension range, and slope of hip-ankle plot during pre-takeoff phase. For vertical jump, the performance was significantly associated to takeoff velocity and trunk extension range. Many quantitative parameters in both standing long jump and vertical jump, including takeoff velocity, trunk inclination angle, trunk extension range, slope of hip-ankle plot during pre-takeoff phase and jumping performance, were moderately correlated to score of Preschooler Gross Motor Quality scale, indicating these parameters could represent certain features of motor development. Significant differences were found in most of the common quantitative parameters between standing long jump and vertical jump, including the takeoff velocity, trunk inclination angle, trunk extension range, slopes of hip-ankle plot and hip-knee plot during pre-takeoff phase. The finding indicated that the motor features and strategies of standing long jump and vertical jump may not be the same in 4~6 year-old preschoolers. In summary, the progresses of quantitative and qualitative measures in standing long jump (and vertical jump ?) were consistent to the gross motor development during the preschool period. Trunk movement and slope of hip-ankle plot during pre-takeoff phase were important quantitative parameters related to motor development, and also considered important determinants of different motor strategies between standing long jump and vertical jump. |
| Databáze: | Networked Digital Library of Theses & Dissertations |
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