在心力衰竭患者中测量Actigraph-GT9X加速度计步骤和能量消耗的有效性
Jisu Kim1, Jonathan Kenyon1, Hayley Billingsley1
1Department of Kinesiology and Health Science, Virginia Commonwealth University, Richmond, VA, United States of America.
PloS one
|January 8, 2025
概括
在心力衰竭 (HF) 患者的脚上佩戴时,ActiGraph GT9X准确地测量了步数 (SC). 萨萨基估计的能源支出 (EE) 在这个人群中也显示出高准确度.
科学领域:
- 心血管医学 心血管医学
- 生物医学工程 生物医学工程
- 运动生理学 运动生理学
背景情况:
- ActiGraph (AG) 加速度计是评估心力衰竭 (HF) 患者身体活动 (PA) 的常见工具.
- 然而,AG测量的有效性在HF群体内尚未确立.
研究的目的:
- 评估ActiGraph GT9X加速计在心力衰竭患者中测量步数 (SC) 和能量消耗 (EE) 的标准有效性.
- 为了比较从脚和腰部位置的AG测量的准确性.
主要方法:
- 16名心力衰竭患者保持了喷射分数,接受了症状限定的心肺运动测试.
- ActiGraph GT9X加速度计被戴在脚和腰部.
- 标准措施包括手动计数步骤和能源支出 (EE) 的间接热量计.
- 使用六个已确定的预测方程来计算AG衍生EE.
主要成果:
- 与腰部位置相比,脚穿着的AG步数显示出与标准措施的相当性,平均绝对百分比误差 (<10%) 较低.
- 估计能源开支的萨萨基方程式显示了与标准措施的显著等价性,其中百分比偏差最低 (0.7%).
结论:
- 在脚上佩戴的ActiGraph GT9X可以在心力衰竭患者中提供准确的步数测量.
- 萨萨基方程在实验室环境中证明了在这个人群中估计能源消耗的准确性.
- 建议在不同的环境中进行进一步验证.
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