Accuracy of Physical Activity Monitors in Pregnant Women
Accuracy of Physical Activity Monitors in Pregnant Women
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DOI：
10.1249/mss.0b013e3182058883
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发表时间：
2011-06-01
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影响因子：
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通讯作者：
Thompson, Dixie L.
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文献类型：
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作者：
Connolly, Christopher P.;Coe, Dawn P.;Thompson, Dixie L.
康诺利角P.，D. P. COE，J. M.肯德里克湾R.小巴塞特，和D. L.汤普森孕妇体力活动预测的准确性。医学科学体育锻炼：第43卷，第6期，第100页。1100-1105，2011年。目的：测定三种计步器和一种加速度计在孕妇踏车行走中的步数准确性。方法：研究对象为30名孕中期或孕晚期（20-34周）的妇女，她们接受了妊娠相关危险因素的筛查。每个参与者都配备了一个包含三个身体活动监测器的腰带：Yamax Digiwalker SW-200（DW），New Lifestyles NL 2000（NL）和GT 3X ActiGraph加速计（ACT）。欧姆龙HJ-720 ITC（HJ）被放在裤子的前口袋里。参与者以54、67、80和94 m.min（-1）的速度行走2 min。实际步数由研究者使用手动计数器确定。计算每种器械在每种速度下记录的平均步数百分比，并进行比较。皮尔森相关性被用来确定身体质量指数和倾斜角度对计步器准确性的影响。结果：速度和器械之间存在显著的交互作用（F-9，F-20 = 7.574，P < 0.001）。在所有速度下，NL和HJ的误差最小。ACT和DW低估了实际采取的步骤，特别是在较慢的步行速度。在54 m.min（-1）时，ACT平均占步数的77.5%，DW平均占步数的56.9%。在所有速度下，器械之间记录的平均步数百分比存在显著差异。身体质量指数仅与NL记录的步数百分比显著相关，并且记录的步数与倾斜角度之间没有显著相关性。结论：在孕妇中，ACT和DW的误差大于NL和HJ。在这些结果的基础上，NL和HJ应该被考虑用于进一步的研究和身体活动计划，重点是在怀孕期间步行。
CONNOLLY, C. P., D. P. COE, J. M. KENDRICK, D. R. BASSETT JR., and D. L. THOMPSON. Accuracy of Physical Activity Monitors in Pregnant Women. Med. Sci. Sports Exerc., Vol. 43, No. 6, pp. 1100-1105, 2011. Purpose: To determine the step count accuracy of three pedometers and one accelerometer in pregnant women during treadmill walking. Methods: Participants were 30 women in the second or third trimester (20-34 wk) who were screened for pregnancy-related risk factors. Each participant was fitted with a belt containing three physical activity monitors: Yamax Digiwalker SW-200 (DW), New Lifestyles NL 2000 (NL), and GT3X ActiGraph accelerometer (ACT). The Omron HJ-720ITC (HJ) was placed in the pants' front pocket. Participants walked at 54, 67, 80, and 94 m.min(-1) for 2 min each. Actual steps were determined by an investigator using a hand-tally counter. The mean percent of steps recorded was calculated for each device at each speed and compared. Pearson correlations were used to determine the effect of body mass index and tilt angle on pedometer accuracy. Results: There was a significant interaction between speed and device (F-9,F-20 = 7.574, P < 0.001). Across all speeds, the NL and HJ had the lowest error. The ACT and DW underestimated the actual steps taken, particularly at the slower walking speeds. At 54 m.min(-1), the ACT averaged 77.5% of steps and the DW averaged 56.9% of steps. Significant differences in the mean percent of steps recorded were found between devices at all speeds. Body mass index was only significantly correlated with percent of steps recorded by the NL, and there were no significant correlations between steps recorded and tilt angle. Conclusions: In pregnant women, the ACT and DW had more error than the NL and HJ. On the basis of these results, the NL and HJ should be considered for use in further research studies and physical activity programs that focus on walking during pregnancy.