Abstract The aim of this study was to evaluate the quality of the ECG signal, obtained from a telemetric body-sensor device during a maximum stress test on an ergometer. Twenty-three subjects, 13 males, were included in the study (20.56±1.19 years). Two different sensor positions were verified on each subject by the concurrent use of two ECG sensors. Each subject participated in four exercise stress tests: two on a treadmill and two on a cycle ergometer. In the first test, both sensors were attached to self-adhesive skin electrodes on the body, while in the second test the sensors were additionally fixed with self-adhesive tapes. The measurements were compared on both ergometers, in terms of the ECG sensors’ positions and the methods used for the sensors’ fixation. The results showed a significant difference in the running speed that provides an assessable ECG signal between the non-fixed and the fixed sensors at position left inferior (p = 0.000), as well as between the positions left inferior and left superior in the first (p = 0.019), and in the second test (p = 0.000) on the treadmill. On the cycle ergometer the differences were significant between the positions left inferior and left superior in the first (p = 0.000), and the second test (p = 0.003), and between the tests with fixed and non-fixed sensors in the position left superior (p = 0.011). The study confirms that ECG sensors could be used for maximal exercise stress tests in laboratories, especially on a cycle ergometer, and that they present a great potential for future use of ECG sensors during physical activity.

中文翻译：

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单通道遥测心电图传感器信号在最大运动压力测试中的质量

摘要 本研究的目的是评估在测力计的最大压力测试期间从遥测身体传感器设备获得的 ECG 信号的质量。研究中包括 23 名受试者，13 名男性（20.56±1.19 岁）。通过同时使用两个 ECG 传感器，在每个对象上验证了两个不同的传感器位置。每个受试者都参加了四项运动压力测试：两项在跑步机上，两项在自行车测力计上。在第一个测试中，两个传感器都连接到身体上的自粘皮肤电极，而在第二个测试中，传感器另外用自粘胶带固定。根据 ECG 传感器的位置和用于传感器固定的方法，比较了两种测力计的测量结果。结果显示，跑步速度的显着差异在左下位置（p = 0.000）的非固定和固定传感器之间以及第一个位置的左下和左上位置之间提供可评估的心电图信号（ p = 0.019），并在跑步机上进行第二次测试（p = 0.000）。在自行车测力计上，第一次测试 (p = 0.000) 和第二次测试 (p = 0.003) 中左下方和左上方位置之间的差异显着，左侧位置固定和非固定传感器的测试之间差异显着优越（p = 0.011）。该研究证实，ECG 传感器可用于实验室的最大运动压力测试，尤其是在自行车测力计上，并且它们为未来在体育活动期间使用 ECG 传感器提供了巨大的潜力。