| RT3三轴加速度传感器测量多种类型身体活动效度研究 |
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| 引用本文： | 戴剑松,顾忠科,徐凯,孙飙.RT3三轴加速度传感器测量多种类型身体活动效度研究[J].成都体育学院学报,2015(6). |
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| 作者姓名： | 戴剑松 顾忠科 徐凯 孙飙 |
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| 作者单位： | 南京体育学院运动健康科学系,江苏 南京,210014 |
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| 基金项目： | 江苏省科技厅社会发展研究项目 |
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| 摘 要： | 目的：：评价RT3三轴加速度传感器测量20种身体活动效度水平,验证其能耗预测模型精度,并试图推导精度更高的适合中国人群的能耗预测模型。方法：运用间接热量测定法,测试14名男性和16名女性共计20项活动能耗水平,测量项目包括：2mph步行、3mph步行、3mph 3%坡度斜坡行走、3mph 8%坡度斜坡行走、4mph快走、4mph 3%坡度斜坡快走、5mph慢跑、6mph中速跑、中速跳绳、快速跳绳、10mph骑自行车、13mph骑自行车、沿楼梯上楼、沿楼梯下楼、擦桌子、洗衣服、拖地、打乒乓球、上肢力量、下肢力量测试。结果：RT3三轴加速度传感器三轴矢量和、垂直轴、矢状轴、水平轴counts与实测MET的一元线性回归方程R2分别为0.63、0.62、0.59,0.46,表明RT3三轴counts对于活动均较为敏感,呈现一定程度同步变化。 RT3矢量和与垂直轴counts无论是测量步行,还是测量日常生活活动,与实测MET的一元线性回归方程的R2均一致。结论：使用三轴加速度传感器未体现明显优于单轴加速度传感器。 RT3自身能耗预测模型不适合中国人群。 RT3可以较好感应不同速度步行运动,但仍然无法感应坡度步行、上下楼运动,本研究推导的步行回归公式及常见活动回归公式预测能耗的准确度高于国外公式,但仍然存在一定误差。
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| 关 键 词： | RT3三轴加速度传感器 身体活动 效度 |
Research on Validity of RT3 Triaxial Accelerometer for Measuring Various Physical Activities |
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| Abstract: | Objective:The aim of this study was to evaluate the validity of RT3 Triaxial accelerometer in the aspects of measuring different types of physical activity and verify the precision accuracy of energy expenditure prediction model in the RT3 software in order to develop more accurate energy expenditure prediction formula for Chinese. Methods:In the method of Indirect heat measurement, 14 males and 16 females completed 20 activities inclu-ding 2mph walking, 3mph walking, 3mph 3% grade walking, 3mph 8% grade walking, 4mph brisk walking, 4mph 3% grade brisk walking, 5mph and 6mph running, slow and quick skipping, 10mph and 13mph bicycle riding, ascending stairs, descending stairs, cleaning table, washing clothes, mopping floor, playing table ten-nis, strength testing for upper limb and lower limb. Results:The R2 between counts of vector magnitude, Verti-cal (V), medial–lateral (ML), anterior–posterior (AP) planes and METs were0. 63、0. 62、0. 59,0. 46, the results showed three axis could occur synchronous changes with physical activities. The R2 between counts of vector magnitude counts , vertical counts and METs were almost same when measuring not only walking but also daily living activities. Conclusions:Using three-axis accelerometer is not considered much better than u-niaxial acceleration sensor. RT3 itself consumption prediction model is not suitable for Chinese people . RT3 could sensitively measure flat walking, but couldn' t accurately detect walking on slope, ascending and de-scending stairs. Regression formulas according to walking and all activities in the research and Common activi-ties regression formula have more accuracy in predicting energy consumption than foreign formulas;however the error is still inevitable. |
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| Keywords: | RT3 Triaxial Accelerometer Physical Activity Validity |
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