调整强度梯度以使用儿童和青少年基于计数的加速计数据
Christina J Alexander1,2,3,4, Sarah L Manske1,3,5, W Brent Edwards1,2,3
1Biomedical Engineering Graduate Program, Schulich School of Engineering, University of Calgary, Calgary, AB T2N 1N4, Canada.
Sensors (Basel, Switzerland)
|May 25, 2024
概括
强度梯度度量现在可以可靠地使用基于计数的加速度计数据,而不仅仅是原始数据. 这允许重新分析使用旧设备收集的历史体育活动数据集.
科学领域:
- 生物医学工程 生物医学工程
- 运动生理学 运动生理学
- 可穿戴技术可穿戴技术
背景情况:
- 强度梯度是使用加速度计量体力活动 (PA) 的新型指标.
- 它最初是为原始加速度数据 (ENMO指标) 开发的,并未对基于计数的数据进行验证.
- 这限制了其在重新分析历史PA数据集中的应用.
研究的目的:
- 为了确定强度梯度度量是否可以使用基于计数的加速度计数据准确地复制.
- 为了确定使用基于计数的数据用于强度梯度计算的有效性.
- 为了能够重新分析历史的体育活动数据.
主要方法:
- 20名参与者 (年龄在7-22岁) 佩戴了基于计数 (ActiGraph GT1M) 和原始加速度 (ActiGraph GT9X) 的加速度计.
- 在实验室和家庭协议期间收集数据.
- 垃圾箱大小是为了适应强度梯度计算的计数数据而生成的.
主要成果:
- 在实验室活动中发现GT1M和GT9X计数之间存在强烈一致.
- 活动强度的分类 (久坐,轻度,中度,强度) 在每日分钟中显示了最小的偏差.
- 基于计数的强度梯度生成的垃圾箱大小与原始指标有很高的一致性 (平均偏差 = -0.15).
结论:
- 强度梯度指标可以使用基于计数的加速度计数据重现.
- 这证实了基于计数的数据用于强度梯度分析的有效性.
- 基于计数的强度梯度为从较旧的加速度计模型中重新分析历史物理活动数据集提供了一种有价值的方法.
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