Ventilatory thresholds (VTs) are key physiological parameters used to evaluate physical performance and determine aerobic and anaerobic transitions during exercise. Current assessment of these parameters requires ergospirometry, limiting evaluation to laboratory or clinical settings. In this work, we introduce a wearable respiratory system that continuously tracks breathing during exercise and estimates VTs during ramp tests. We validate the respiratory rate and VTs predictions in 17 healthy adults using ergospirometry analysis. In addition, we use the wearable system to evaluate VTs in 107 recreational athletes during ramp tests outside the laboratory and show that the mean population values agree with physiological variables traditionally used to exercise prescription. We envision that respiratory wearables can be useful in determining aerobic and anaerobic parameters with promising applications in health telemonitoring and human performance.

通气阈值 (VT) 是用于评估身体表现并确定运动期间有氧和无氧转换的关键生理参数。目前对这些参数的评估需要运动肺量计，将评估限制在实验室或临床环境中。在这项工作中，我们引入了一种可穿戴呼吸系统，该系统可以在运动期间连续跟踪呼吸并在斜坡测试期间估计VT。我们使用运动肺量测定法分析验证了 17 名健康成年人的呼吸频率和 VT 预测。此外，我们使用可穿戴系统在实验室外的坡道测试中评估 107 名休闲运动员的 VT，结果表明平均群体值与传统上用于运动处方的生理变量一致。我们预计，呼吸可穿戴设备可用于确定有氧和无氧参数，并在健康远程监测和人体表现方面具有广阔的应用前景。