MOTION COMPENSATION STRATEGY OF PRESCHOOLERS COPING WITH TASKS OF STRIDE LENGTH CHANGES AND CURVE TURNINGS: IN TERMS OF CENTRE OF MASS
Journal Title: Revista de Pielărie Încălţăminte - Year 2019, Vol 19, Issue 1
Abstract
The purpose of this study was first to disclose motion compensation strategy of healthy preschoolers according to evaluate how the stride length changes and curve turnings affected their Centre of Mass (CoM) performances; and then to comprehend the process of children develop in motion. Ten healthy children aged around 6 and 9 adults aged 23-47 were recruited in this study. The CoM was calculated based on four key markers in pelvis and its trajectory in five tasks including the stride length changes (short stride, straight walking and long stride) and curve turnings (0°-30°-60°) were first recorded; and then variables such as trajectory of CoM in sagittal and coronal plane, Unit of Energy (uEN), Energy Kinetic (uEk) and Gravitational Potential Energy (uEg) in the critical gait period were analyzed. Results show that as the stride length increase, child accordingly enlarged their motion range of CoM both in mediolateral and vertical direction to assist the whole-body movement; meanwhile, children’s uEN increased as the stride length prolonged. Further, since 10%GC, child’s CoM shifted gradually to the curving direction (right) as curve turning angle aggregated; while, dramatic change occurred at 60%GC, where a larger CoM deviation was found in 60° than that of 30°. The uEN of children was low before 60%GC, but it raised prominently after 60%GC. Overall, adult-like CoM were partly found in healthy preschoolers when coping with varied gait tasks, however distinctions existed which demonstrated that compensative strategies of those children were still developing.
Authors and Affiliations
Mingyu HU, Quting HUANG, Bo XU, Wuyong CHEN, Jianxin WU, Jin ZHOU
Keywords
Related Articles
- EP ID EP538299
- DOI 10.24264/lfj.19.1.3
- Views 115
- Downloads 0
EFFECTS OF THE STRIDE LENGTH ON THE GAIT AND INTRA-LIMBS COORDINATION OF HEALTHY CHILDREN AGED 3 TO 6
Body motion adjusts while the stride lengths changes, but few studies report those influences on the gait mechanism and intra-limbs coordination of children; therefore, the purpose of our study was to evaluate the gait m...
PROTEIN BIOFERTILIZER DEVELOPMENT AND APPLICATION ON SOYBEAN CULTIVATED DEGRADED SOIL
This paper addresses the priority area of greening tanneries by recovering hide waste as fertilizing biocomposites. The paper presents the development of protein biofertilizers and their application in agriculture for pl...
STUDY OF VEGETABLE EXTRACTS EFFECT ON WET-WHITE LEATHER
Although the worldwide leather production is based on chromium tannage, there is an increasing share of chrome and metal free tannages. This is mainly due to the growing demand for chrome free leathers in the automotive...
APPLICATION OF QFD METHOD IN FITNESS FOOTWEAR PRODUCTION
In order to obtain a better product it is important to integrate the consumer requests in all production levels, starting with research, design and till the end of production process. One of the most popular methods used...
PRESSURE DISTRIBUTION PATTERNS AND SHAPES OF FOOT UNDER LONG-TERM LOADS
In this paper, we use instruments to scan the feet of athletes with no foot disease or previous injury from Beijing Sport University and ordinary college students from Tsinghua University and obtain the foot shapes and t...