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Prediction of Energy Expenditure From Wrist Accelerometry in People With and Without Down Syndrome

机译：通过腕式加速度计对患有和不患有唐氏综合症的人的能量消耗进行预测

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摘要

This study examined the relationship between energy expenditure and wrist accelerometer output during walking in persons with and without Down syndrome (DS). Energy expenditure in metabolic equivalent units (METs) and activity-count rate were respectively measured with portable spirometry and a uniaxial wrist accelerometer in 17 persons with DS (age: 24.7 ± 6.9 years; 9 women) and 21 persons without DS (age: 26.3 ± 5.2 years; 12 women) during six over-ground walking trials. Combined groups regression showed that the relationship between METs and activity-count rate differed between groups (p ＜ .001). Separate models for each group included activity-count rate and squared activity-count rate as significant predictors of METs (p≤ .005). Prediction of METs appeared accurate based on Bland-Altman plots and the lack of between-group difference in mean absolute prediction error (DS: 17.07%; Non-DS: 18.74%). Although persons with DS show altered METs to activity-count rate relationship during walking, prediction of their energy expenditure from wrist accelerometry appears feasible.
机译：这项研究检查了患有和不患有唐氏综合症（DS）的人在行走过程中能量消耗与手腕加速度计输出之间的关系。用便携式肺量计和单轴腕部加速度计分别测量了17名DS患者（24.7±6.9岁; 9名妇女）和21名无DS患者（26.3岁）的代谢当量（METs）和活动计数率能量消耗。 ±5.2岁; 12名女性）在6次地面步行试验中。组合回归分析表明，各组间METs与活动计数率之间的关系不同（p ＜.001）。每组的单独模型包括活动计数率和活动计数率平方作为MET的重要预测因子（p≤.005）。根据Bland-Altman图和平均绝对预测误差的组间差异（DS：17.07％; Non-DS：18.74％），MET的预测似乎是准确的。尽管患有DS的人在行走过程中显示出MET与活动计数率关系发生了改变，但根据手腕加速度计预测其能量消耗似乎是可行的。

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