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首页> 外文期刊>Medicine and science in sports and exercise >Laboratory measurement of posture allocation and physical activity in children.
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Laboratory measurement of posture allocation and physical activity in children.

机译：儿童姿势分配和体育锻炼的实验室测量。

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PURPOSE: The purpose of this study was to validate the combined use of inclinometers and accelerometers to measure body posture and movement in children in a laboratory setting. METHODS: We performed two separate experiments. In the first experiment, we tested the hypothesis that four inclinometers (tilt sensors) could be used to capture body posture in children. We observed and recorded body posture in eight healthy children (mean +/- SD; body mass index (BMI), 18 +/- 3 kg x m(-2)) on 2880 occasions and compared these records with the inclinometer data. In the second experiment, the hypothesis was that two inclinometers could be used to determine whether 18 children (BMI, 21 +/- 5 kg x m(-2)) were sedentary. We observed and recorded sedentariness (sitting/lying compared to standing) on 5575 occasions and compared these records with the inclinometer data. In both of these experiments, we also addressed the hypothesis that accelerometer output, when measured at varying velocities, correlated with walking energy expenditure. RESULTS: In experiment 1, body posture was correctly identified in 2880 out of 2880 inclinometer measurements. In experiment 2, sedentary behavior was correctly identified in 5575 out of 5575 occasions. For the entire group, acceleration and body weight correlated well with energy expenditure (r2 = 0.84). CONCLUSION: The inclinometer-accelerometer system that we tested can be used to measure body posture and movement. We can measure sedentary behavior using two inclinometers instead of four inclinometers. This monitoring system may be useful for measuring energy expenditure, body posture, and physical activity in children.
机译：目的：本研究的目的是验证在实验室环境中倾斜仪和加速度计的结合使用，以测量儿童的体位和运动。方法：我们进行了两个单独的实验。在第一个实验中，我们测试了以下假设：四个倾斜仪（倾斜传感器）可用于捕获儿童的身体姿势。我们在2880次场合观察并记录了8名健康儿童的身体姿势（平均+/- SD;体重指数（BMI），18 +/- 3 kg x m（-2）），并将这些记录与测斜仪数据进行了比较。在第二个实验中，假设是可以使用两个测斜仪确定18个孩子（BMI，21 +/- 5 kg x m（-2））是否久坐。我们在5575次情况下观察并记录了久坐不动（坐着/躺着与站立时相比），并将这些记录与测斜仪数据进行了比较。在这两个实验中，我们还提出了一个假设，即以不同速度测量时，加速度计的输出与步行能量消耗相关。结果：在实验1中，在2880个测斜仪测量中的2880个中正确识别了身体姿势。在实验2中，在5575次中有5575次正确识别了久坐行为。对于整个组，加速度和体重与能量消耗相关性很好（r2 = 0.84）。结论：我们测试的测斜仪-加速度计系统可用于测量人体姿势和运动。我们可以使用两个测斜仪而不是四个测斜仪来测量久坐行为。该监视系统对于测量儿童的能量消耗，身体姿势和身体活动可能有用。

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