关键词: 学龄前儿童, 静态平衡, 感觉权重, 感觉融合

Abstract: Objective To analyze the sensory integration characteristics of 4- to 5-year-old preschool children while maintaining static balance, in order to provide reference for promoting the development of motor development. Methods A total of 128 preschool children were randomly selected in this study from a public kindergarten in Suzhou. Wearable sensor were worn at the center of mass(COM) position for four tests: T1 standing with eyes open, T2 standing with eyes closed, T3 standing with eyes open on a sponge pad, and T4 standing with eyes closed on a sponge pad. The angular velocity modulus(ω) of COM shaking was extracted, the Romberg quotient(RQ), vestibular Romberg quotient(VRQ), and the rate of increase in body stability when integrating different sensations were calculated. The contribution weights and sensory integration characteristics of visual, proprioceptive, and vestibular sensations to static balance were analyzed. Independent sample t-test was used to analyze the differences between different gender and age groups. Results The RQ was 1.20, and the VRQ was 1.58. The contribution rates of visual, proprioceptive, and vestibular senses to body balance were approximately 9.28%, 28.19% and 62.53%, respectively. The difference in the rate of increase in body stability between integrated vision and integrated proprioception with normal vestibular perception was statistically significant(P<0.001, Cohen's d＝-1.14),while the difference in the rate of increase in body stability between integrated proprioception and vestibular perception with normal vestibular perception and integrated vision with normal proprioception was statistically significant(P<0.001, Cohen's d=2.30). The difference in the rate of increased body stability between the sum of vestibular and proprioceptive integration and the simultaneous integration of visual and proprioceptive integration was statistically significant(P<0.001, Cohen's d＝-0.86). The gender differences in RQ, VRQ, and the rate of increased body stability when integrating different sensations(P>0.05) and the difference in half year old age was not statistically significant(P>0.05). Conclusions When preschool children aged 4 - 5 maintain static balance, the contribution of vestibular integration proprioception to body stability is greater than that of vestibular integrate vision. The contribution of vestibular and visual integrate proprioception to body stability is greater than that of vestibular and proprioception integrate vision. The sensory integration characteristics between boys and girls, as well as half year old children, are basically the same.

Key words: preschool children, static balance, sensory weight, sensory integration