Comparing Hip, Wrist and Ankle-Worn ActiGraph Accelerometers for Measuring Physical Activity in Toddlers

IF 1.8 4区医学 Q2 PEDIATRICS

Child Care Health and Development Pub Date : 2025-04-08 DOI:10.1111/cch.70074

Tze-Hsuan Wang, Ameer Helmi, Rafael Morales Mayoral, Lucas Yao, April Murray, Naomi T. Fitter, Samuel W. Logan

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引用次数: 0

Abstract

Background

Understanding the relationships among accelerometer placements and the agreements between cut points is essential to enhancing the accuracy of physical activity measurement for toddlers. This study aimed to compare the magnitudes and relationships of activity counts from hip, wrist and ankle ActiGraph GT9X accelerometers in toddlers and to assess the agreement between age-specific cut points at group and individual levels.

Methods

Accelerometer data were collected from nine toddlers (three girls, 22.2 ± 6.1 months) during 12 weekly 20-min free-play sessions. Activity counts were downloaded using specific epoch lengths and filters according to the studies validating the cut points. One-way repeated ANOVAs were used to compare the activity counts per 15 s across placements. Interplacement relationships were examined using Spearman's rank correlation coefficients. Agreements were assessed with Bland–Altman plots between three sets of hip cut points and one wrist cut point. Ankle data were not analysed because of a lack of validated cut points.

Results

The wrist placement yielded the highest counts, followed by ankle and hip. The correlation coefficient was strongest between hip and ankle vector magnitude counts (rs = 0.88), whereas relatively weaker between wrist and hip (rs = 0.65) and wrist and ankle (rs = 0.60). The Bland–Altman plots indicated that time estimates for sedentary, light and moderate-to-vigorous physical activity were significantly different between most cut points. At the individual level, considerable variations in interplacement correlations and physical activity time estimates were observed.

Conclusion

The strong correlation between hip and ankle activity counts suggests that the ankle could be a feasible sensor-wearing location. The moderate correlation between wrist and hip suggests that multiple accelerometers may be needed to enhance accuracy. Discrepancies across cut points indicate that more research is needed to validate cut points for accurately measuring physical activity in toddlers, especially considering individual differences in movement behaviours.

查看原文本刊更多论文

比较臀部、手腕和脚踝佩戴的活动加速计测量幼儿的身体活动

背景了解加速度计位置与切点之间的关系对提高幼儿身体活动测量的准确性至关重要。本研究旨在比较幼儿髋部、手腕和脚踝的ActiGraph GT9X加速度计的活动计数的大小和关系，并评估群体和个人水平上特定年龄切割点之间的一致性。方法收集9名幼儿（3名女孩，22.2±6.1个月）每周12次20分钟自由游戏期间的加速度计数据。根据验证切割点的研究，使用特定的epoch长度和过滤器下载活动计数。采用单因素重复方差分析比较各组每15秒的活动次数。采用Spearman等级相关系数检验插位关系。用Bland-Altman图评估三组髋部切点和一组腕部切点之间的一致性。由于缺乏有效的切割点，踝关节数据未进行分析。结果腕部积液计数最高，其次为踝关节和髋部。髋部和踝关节矢量数量级的相关系数最高（rs = 0.88），腕部和髋部矢量数量级的相关系数较低（rs = 0.65），腕部和踝关节矢量数量级的相关系数较低（rs = 0.60）。Bland-Altman图表显示，在大多数切点之间，久坐、轻度和中度至剧烈体育活动的估计时间存在显著差异。在个体水平上，观察到插班相关性和身体活动时间估计存在相当大的差异。结论髋关节和踝关节活动量之间的相关性表明，踝关节可能是一个可行的传感器佩戴位置。手腕和臀部之间的适度相关性表明可能需要多个加速度计来提高准确性。切割点之间的差异表明，需要更多的研究来验证切割点是否能准确测量幼儿的身体活动，特别是考虑到运动行为的个体差异。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Child Care Health and Development 医学-小儿科

CiteScore

3.40

自引率

5.30%

发文量

136

审稿时长

4-8 weeks

期刊介绍： Child: care, health and development is an international, peer-reviewed journal which publishes papers dealing with all aspects of the health and development of children and young people. We aim to attract quantitative and qualitative research papers relevant to people from all disciplines working in child health. We welcome studies which examine the effects of social and environmental factors on health and development as well as those dealing with clinical issues, the organization of services and health policy. We particularly encourage the submission of studies related to those who are disadvantaged by physical, developmental, emotional and social problems. The journal also aims to collate important research findings and to provide a forum for discussion of global child health issues.