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首页> 外文会议>6th Pan-Pacific Conference on Occupational Ergonomics null null >Analysis of Breathing Pattern and Trunk Position in Children with Load Carriage during Walking
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Analysis of Breathing Pattern and Trunk Position in Children with Load Carriage during Walking

机译：行走时负重儿童的呼吸模式和躯干位置分析

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This study was to examine the change of breathing pattern and trunk posture in children with load carriage during treadmill walking and to examine whether there was the association between changed trunk posture and breathing pattern. Twenty-five boys aged 10.31 +- 0.26 years were selected from a primary school. Each subject participated in four walking trials on a treadmill: one without a bag (0% of body weight) and three carrying school bags, weighing 10% , 15%, and 20% of the child's body weight. Subjects walked at 1.1 m/s for 20 minutes on a treadmill. Walk movement was 2-D video filmed and analyzed. Tidal volume, respiratory frequency, and ventilation were measured with a car-diopulmonary function system before, during, and up until 3 minutes after the walk. The results show that there is a positive linear relationship between load weight, trunk forward lean, and breathing frequency. A 20-minute walk with a 15% and 20% load induced significant trunk forward lean and decreased trunk movement range, as well as increased respiratory frequency.
机译：这项研究的目的是检查跑步机行走过程中负重儿童的呼吸模式和躯干姿势的变化，并检查躯干姿势变化和呼吸模式之间是否存在关联。从一所小学中选出了25名年龄在10.31±0.26岁的男孩。每个受试者都在跑步机上参加了四次步行试验：一个没有袋子（占体重的0％）和三个携带书包，占孩子体重的10％，15％和20％。受试者在跑步机上以1.1 m / s的速度行走20分钟。步行运动是二维视频的拍摄和分析。步行前，步行中和步行后3分钟之前，用心肺功能系统测量潮气量，呼吸频率和通气量。结果表明，负重，躯干前倾和呼吸频率之间存在正线性关系。负重15％和20％的情况下步行20分钟会导致躯干明显向前倾斜，躯干运动范围减小，并增加呼吸频率。

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