Light-intensity activities are important for estimating physical activity energy expenditure using uniaxial and triaxial accelerometers
Light-intensity activities are important for estimating physical activity energy expenditure using uniaxial and triaxial accelerometers
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DOI：
10.1007/s00421-008-0883-7
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发表时间：
2009-01-01
影响因子：
3
通讯作者：
Oda, Shingo
中科院分区：
文献类型：
--
作者：
Yamada, Yosuke;Yokoyama, Keiichi;Oda, Shingo
这项研究评估了使用单轴(ACCuni)和三轴(ACCtri)加速度计估算的老年人总能量消耗(TEE)的有效性。32名健康老年人(-87岁)参加了本次研究。TEE测定采用双标记水法(TEEDLW)。TEEACCuni(6.79+/-A 1.08MJ/d(-1))显著低于TEEDLW(7.85+/-A1.54MJ/d(-1))，且具有更宽的一致范围(-3.15MJ/-1.12MJ(-1))，相关系数较小(r=0.703)。TEEACCtri(7.88+/-A1.27MJ day(-1))与TEEDLW没有什么不同，但符合范围较窄(-1.64MJ/d(-1))，相关系数较大(r=0.835，P<；0.001)。ACCuni的光活动估计强度明显较低。在6分钟步行测试中观察到更大的内侧加速度。结果提示，ACCtri较ACCuni更适用于老年人TEE的评估。
This study evaluated the validity of the total energy expenditure (TEE) estimated using uniaxial (ACCuni) and triaxial (ACCtri) accelerometers in the elderly. Thirty-two healthy elderly (64-87 years) participated in this study. TEE was measured using the doubly labeled water (DLW) method (TEEDLW). TEEACCuni (6.79 +/- A 1.08 MJ day(-1)) was significantly lower than TEEDLW (7.85 +/- A 1.54 MJ day(-1)) and showed wider limits of agreement (-3.15 to 1.12 MJ day(-1)) with a smaller correlation coefficient (r = 0.703). TEEACCtri (7.88 +/- A 1.27 MJ day(-1)) did not differ from TEEDLW and showed narrower limits of agreement (-1.64 to 1.72 MJ day(-1)) with a larger correlation coefficient (r = 0.835, P < 0.001). The estimated intensities of light activities were significantly lower with ACCuni. Greater mediolateral acceleration was observed during 6-min walk tests. The results suggest that ACCtri is a better choice than ACCuni for assessing TEE in the elderly.