【摘要】 目的探讨和比较电子步行计和RT3活动感应器测量学龄前儿童参与组织性游戏活动的有效度。方法选择143名4~5岁学龄前儿童,包括80名男生和63名女生。每名儿童进行10种不同游戏活动(爬行、丢沙包、踢球、滚球、反应跑、走独木桥、韵律活动、踢石戏、滑动、骑车),分2次进行,每次进行5种,每次于30 min内完成活动。检测过程中,研究人员分别将Digi-Walkers SW-700步行计和RT3活动感应器置儿童的左侧与右侧腰部,RT3活动感应器收集数据,评定步行计测量儿童参与活动的有效度。结果步行计与RT3聚合效度系数最低的活动为滑动(男孩,r=0.31)和骑车(女孩,r=0.03),其他8项活动的聚合效度系数为0.50s~0.70s。效度系数最高的活动为踢石戏(男孩,r=0.78;女孩,r=0.77)、滚球(男孩,r=0.76)和走独木桥(女孩,r=0.76)。步行计和RT3的组内效度系数分别为0.34~0.87和0.37~0.82。结论步行计可有效测量学龄前儿童的活动量。更多还原

【Abstract】 Objective To determine the convergent validity and stability reliability of pedometry as compared to the criterion variable of triaxial accelerometry( RT3) in measuring structured play activities of preschool children. Methods The subjects were 143 preschoolers including 80 boys and 63 girls aged 4 to 5. The preselected ten play activities, including balance beam walk, cycling, sliding, crawl, running, rhythmic movement, hopscotch, throwing bean bag, kicking ball and rolling ball in two 30-minute normal school playtime sessions with five activities at a time were measured by both pedometer(Digi-Walkers SW-700) and RT3. The same testing procedure was repeated in another two 30-minute playtime sessions. In each session, the test administrators clipped the pedometer and the RT3 onto the left side and right side of a child’s waist, respectively. Pedometer data were recorded as the total steps accumulated while the accelerometer data were recorded as the vector magnitude scores. Results The lowest convergent validity coefficients by correlating pedometer and RT3 data were sliding(r = 0.31) for boys and cycling(r = 0.03) for girls while the other eight activities had acceptable validity coefficients in 0.50s to 0.70s. The play activities with the highest validity coefficients were hopscotch( r = 0.78 for boys, r = 0.77 for girls), rolling ball( r = 0.76 for boys), and walking balance beam(r = 0.76 for girls). Lastly, the intraclass reliability coefficients for pedometer and RT3 respectively were 0.34 to 0.87 and 0.37 to 0.82. Conclusion Pedometer is a valid tool when measuring most of the preschoolers’ play activities.更多还原