{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,10,12]],"date-time":"2025-10-12T01:38:13Z","timestamp":1760233093802,"version":"build-2065373602"},"reference-count":34,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2022,12,15]],"date-time":"2022-12-15T00:00:00Z","timestamp":1671062400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"name":"National Research Foundation of Korea","award":["NRF-2020R1A2C1013570","NRF-2018R1D1A1B07049804"],"award-info":[{"award-number":["NRF-2020R1A2C1013570","NRF-2018R1D1A1B07049804"]}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"<jats:p>In this study, a noncontact fabric loop sensor based on magnetic-field-induced conductivity, which can simultaneously detect cardiac activity and respiration signals, was developed and the effects of the sensor\u2019s shape and measurement position on the sensing performance were analyzed. Fifteen male subjects in their twenties wore sleeveless shirts equipped with various types of fabric loop sensors (spiky, extrusion, and spiral), and the cardiac activity and respiratory signals were measured twice at positions P2, P4, and P6. The measurements were verified by comparing them against the reference electrocardiogram (ECG) and respiratory signals measured using BIOPAC\u00ae (MP150, ECG100B, RSP100C). The waveforms of the raw signal measured by the fabric loop sensor were filtered with a bandpass filter (1\u201320 Hz) and qualitatively compared with the ECG signal obtained from the Ag\/AgCI electrode. Notwithstanding a slight difference in performance, the three fabric sensors could simultaneously detect cardiac activity and respiration signals at all measurement positions. In addition, it was verified through statistical analysis that the highest-quality signal was obtained at the measurement position of P4 or P6 using the spiral loop sensor.<\/jats:p>","DOI":"10.3390\/s22249884","type":"journal-article","created":{"date-parts":[[2022,12,16]],"date-time":"2022-12-16T03:55:39Z","timestamp":1671162939000},"page":"9884","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":9,"title":["Wearable Fabric Loop Sensor Based on Magnetic-Field-Induced Conductivity for Simultaneous Detection of Cardiac Activity and Respiration Signals"],"prefix":"10.3390","volume":"22","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0116-187X","authenticated-orcid":false,"given":"Hyun-Seung","family":"Cho","sequence":"first","affiliation":[{"name":"Institute of Symbiotic Life-TECH, Yonsei University, Seoul 03722, Republic of Korea"}]},{"given":"Jin-Hee","family":"Yang","sequence":"additional","affiliation":[{"name":"Institute of Symbiotic Life-TECH, Yonsei University, Seoul 03722, Republic of Korea"}]},{"given":"Sang-Yeob","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of ICT Convergence, Engineering, Konkuk University, Seoul 27478, Republic of Korea"}]},{"given":"Jeong-Whan","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of ICT Convergence, Engineering, Konkuk University, Seoul 27478, Republic of Korea"}]},{"given":"Joo-Hyeon","family":"Lee","sequence":"additional","affiliation":[{"name":"Department of Clothing & Textiles, Yonsei University, Seoul 03722, Republic of Korea"}]}],"member":"1968","published-online":{"date-parts":[[2022,12,15]]},"reference":[{"key":"ref_1","first-page":"3","article-title":"Development of the wearable ECG measurement system for health monitoring during daily life","volume":"19","author":"Noh","year":"2010","journal-title":"J. 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