步行和跑步期间的呼吸速率估计,使用麦克风记录的呼吸声音
Chiara Romano1, Andrea Nicolò2, Lorenzo Innocenti2
1Departmental Faculty of Engineering, Università Campus Bio-Medico di Roma, 00128 Rome, Italy.
Biosensors
|June 27, 2023
概括
一个面具麦克风准确地估计运动期间的呼吸频率 (每分钟呼吸次数). 这种新的方法为运动员提供了一种可行的方法来监测呼吸努力,即使是在强烈的体力活动中.
科学领域:
- 运动科学 运动科学 运动科学
- 生物医学工程 生物医学工程
- 可穿戴技术可穿戴技术
背景情况:
- 呼吸频率 (f) 是身体炼的一个关键指标.
- 在运动期间监控f 提出了诸如运动工件之类的挑战.
- 麦克风传感器对运动工件的敏感性较低,因此在呼吸监测中未得到充分利用.
研究的目的:
- 评估面罩集成的麦克风,以估计在各种运动强度期间的呼吸频率 (f).
- 为了评估基于麦克风的f估计与参考流量计系统的准确性.
主要方法:
- 一个嵌入在面具中的麦克风捕获了呼吸声音.
- 呼吸频率 (f) 由30秒间隔的呼气事件计算出来.
- 十个健康的受试者执行了休息,行走和跑步的协议.
- 数据与孔径流量计进行了比较,使用平均绝对误差 (MAE) 和平均差异 (MOD).
主要成果:
- 麦克风系统与参考流量计显示良好一致.
- 随着运动强度和环境噪声的增加,准确性略有下降.
- 在以12公里/小时的速度跑步时,最大MAE为3.8bpm,MOD为-2.0bpm.
- 在所有条件下,总体MAE为1.7 bpm,MOD ± LOAs为-0.24 ± 5.07 bpm.
结论:
- 安装在面罩上的麦克风传感器是运动期间估计呼吸频率 (f) 的合适选择.
- 这项技术可以为运动员的体力和训练负载提供宝贵的见解.
- 进一步的研究可能会完善这种非侵入性方法,使其广泛用于运动.
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