{"id":"https://openalex.org/W2902554438","doi":"https://doi.org/10.3390/s18103239","title":"Unobtrusive Photoplethysmographic Monitoring Under the Foot Sole while in a Standing Posture","display_name":"Unobtrusive Photoplethysmographic Monitoring Under the Foot Sole while in a Standing Posture","publication_year":2018,"publication_date":"2018-09-26","ids":{"openalex":"https://openalex.org/W2902554438","doi":"https://doi.org/10.3390/s18103239","mag":"2902554438","pmid":"https://pubmed.ncbi.nlm.nih.gov/30261647"},"language":"en","primary_location":{"id":"doi:10.3390/s18103239","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18103239","pdf_url":"https://www.mdpi.com/1424-8220/18/10/3239/pdf?version=1537961908","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.mdpi.com/1424-8220/18/10/3239/pdf?version=1537961908","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5037191396","display_name":"Seunghyeok Hong","orcid":"https://orcid.org/0000-0003-4242-7638"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Seunghyeok Hong","raw_affiliation_strings":["Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 110-799, Korea"],"affiliations":[{"raw_affiliation_string":"Interdisciplinary Program in Bioengineering, Seoul National University, Seoul 110-799, Korea","institution_ids":["https://openalex.org/I139264467"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5101416074","display_name":"Kwang Suk Park","orcid":"https://orcid.org/0000-0001-8725-2996"},"institutions":[{"id":"https://openalex.org/I139264467","display_name":"Seoul National University","ror":"https://ror.org/04h9pn542","country_code":"KR","type":"education","lineage":["https://openalex.org/I139264467"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Kwang Suk Park","raw_affiliation_strings":["Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul 110-799, Korea","Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-799, Korea"],"affiliations":[{"raw_affiliation_string":"Department of Biomedical Engineering, Seoul National University College of Medicine, Seoul 110-799, Korea","institution_ids":["https://openalex.org/I139264467"]},{"raw_affiliation_string":"Institute of Medical & Biological Engineering, Medical Research Center, Seoul National University, Seoul 110-799, Korea","institution_ids":["https://openalex.org/I139264467"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":["https://openalex.org/A5101416074"],"corresponding_institution_ids":["https://openalex.org/I139264467"],"apc_list":{"value":2400,"currency":"CHF","value_usd":2598},"apc_paid":{"value":2400,"currency":"CHF","value_usd":2598},"fwci":0.111,"has_fulltext":true,"cited_by_count":15,"citation_normalized_percentile":{"value":0.47476996,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"18","issue":"10","first_page":"3239","last_page":"3239"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9998999834060669,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.9923999905586243,"subfield":{"id":"https://openalex.org/subfields/2705","display_name":"Cardiology and Cardiovascular Medicine"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T13248","display_name":"Healthcare Technology and Patient Monitoring","score":0.9865999817848206,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/photoplethysmogram","display_name":"Photoplethysmogram","score":0.9740667343139648},{"id":"https://openalex.org/keywords/foot","display_name":"Foot (prosody)","score":0.7343835830688477},{"id":"https://openalex.org/keywords/wrist","display_name":"Wrist","score":0.42075905203819275},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.407384991645813},{"id":"https://openalex.org/keywords/medicine","display_name":"Medicine","score":0.3617101311683655},{"id":"https://openalex.org/keywords/computer-vision","display_name":"Computer vision","score":0.33340299129486084},{"id":"https://openalex.org/keywords/biomedical-engineering","display_name":"Biomedical engineering","score":0.3325643837451935},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.32537275552749634},{"id":"https://openalex.org/keywords/surgery","display_name":"Surgery","score":0.18848451972007751}],"concepts":[{"id":"https://openalex.org/C116390426","wikidata":"https://www.wikidata.org/wiki/Q7187885","display_name":"Photoplethysmogram","level":3,"score":0.9740667343139648},{"id":"https://openalex.org/C115076146","wikidata":"https://www.wikidata.org/wiki/Q1651051","display_name":"Foot (prosody)","level":2,"score":0.7343835830688477},{"id":"https://openalex.org/C2778216619","wikidata":"https://www.wikidata.org/wiki/Q185706","display_name":"Wrist","level":2,"score":0.42075905203819275},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.407384991645813},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.3617101311683655},{"id":"https://openalex.org/C31972630","wikidata":"https://www.wikidata.org/wiki/Q844240","display_name":"Computer vision","level":1,"score":0.33340299129486084},{"id":"https://openalex.org/C136229726","wikidata":"https://www.wikidata.org/wiki/Q327092","display_name":"Biomedical engineering","level":1,"score":0.3325643837451935},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.32537275552749634},{"id":"https://openalex.org/C141071460","wikidata":"https://www.wikidata.org/wiki/Q40821","display_name":"Surgery","level":1,"score":0.18848451972007751},{"id":"https://openalex.org/C106131492","wikidata":"https://www.wikidata.org/wiki/Q3072260","display_name":"Filter (signal processing)","level":2,"score":0.0},{"id":"https://openalex.org/C41895202","wikidata":"https://www.wikidata.org/wiki/Q8162","display_name":"Linguistics","level":1,"score":0.0},{"id":"https://openalex.org/C138885662","wikidata":"https://www.wikidata.org/wiki/Q5891","display_name":"Philosophy","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000328","descriptor_name":"Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000033","qualifier_name":"anatomy & histology","is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000033","qualifier_name":"anatomy & histology","is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000033","qualifier_name":"anatomy & histology","is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D005528","descriptor_name":"Foot","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006339","descriptor_name":"Heart Rate","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008875","descriptor_name":"Middle Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011187","descriptor_name":"Posture","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D011187","descriptor_name":"Posture","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D011187","descriptor_name":"Posture","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":false},{"descriptor_ui":"D016477","descriptor_name":"Artifacts","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016477","descriptor_name":"Artifacts","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D016477","descriptor_name":"Artifacts","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017156","descriptor_name":"Photoplethysmography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D017156","descriptor_name":"Photoplethysmography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D017156","descriptor_name":"Photoplethysmography","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":false},{"descriptor_ui":"D055815","descriptor_name":"Young Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D055815","descriptor_name":"Young Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D055815","descriptor_name":"Young Adult","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false}],"locations_count":6,"locations":[{"id":"doi:10.3390/s18103239","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18103239","pdf_url":"https://www.mdpi.com/1424-8220/18/10/3239/pdf?version=1537961908","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},{"id":"pmid:30261647","is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/30261647","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors (Basel, Switzerland)","raw_type":null},{"id":"pmh:oai:doaj.org/article:3daa25220a564a4aa0c27ba9ad143e4c","is_oa":true,"landing_page_url":"https://doaj.org/article/3daa25220a564a4aa0c27ba9ad143e4c","pdf_url":null,"source":{"id":"https://openalex.org/S112646816","display_name":"SHILAP Revista de lepidopterolog\u00eda","issn_l":"0300-5267","issn":["0300-5267","2340-4078"],"is_oa":true,"is_in_doaj":true,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors, Vol 18, Iss 10, p 3239 (2018)","raw_type":"article"},{"id":"pmh:oai:europepmc.org:5162139","is_oa":true,"landing_page_url":"http://europepmc.org/pmc/articles/PMC6210668","pdf_url":null,"source":{"id":"https://openalex.org/S4306400806","display_name":"Europe PMC (PubMed Central)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1303153112","host_organization_name":"European Bioinformatics Institute","host_organization_lineage":["https://openalex.org/I1303153112"],"host_organization_lineage_names":[],"type":"repository"},"license":"other-oa","license_id":"https://openalex.org/licenses/other-oa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"","raw_type":"Text"},{"id":"pmh:oai:mdpi.com:/1424-8220/18/10/3239/","is_oa":true,"landing_page_url":"http://dx.doi.org/10.3390/s18103239","pdf_url":null,"source":{"id":"https://openalex.org/S4306400947","display_name":"MDPI (MDPI AG)","issn_l":null,"issn":null,"is_oa":true,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I4210097602","host_organization_name":"Multidisciplinary Digital Publishing Institute (Switzerland)","host_organization_lineage":["https://openalex.org/I4210097602"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors","raw_type":"Text"},{"id":"pmh:oai:pubmedcentral.nih.gov:6210668","is_oa":true,"landing_page_url":"https://www.ncbi.nlm.nih.gov/pmc/articles/6210668","pdf_url":null,"source":{"id":"https://openalex.org/S2764455111","display_name":"PubMed Central","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Sensors (Basel)","raw_type":"Text"}],"best_oa_location":{"id":"doi:10.3390/s18103239","is_oa":true,"landing_page_url":"https://doi.org/10.3390/s18103239","pdf_url":"https://www.mdpi.com/1424-8220/18/10/3239/pdf?version=1537961908","source":{"id":"https://openalex.org/S101949793","display_name":"Sensors","issn_l":"1424-8220","issn":["1424-8220"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310310987","host_organization_name":"Multidisciplinary Digital Publishing Institute","host_organization_lineage":["https://openalex.org/P4310310987"],"host_organization_lineage_names":["Multidisciplinary Digital Publishing Institute"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sensors","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Responsible consumption and production","score":0.5199999809265137,"id":"https://metadata.un.org/sdg/12"}],"awards":[{"id":"https://openalex.org/G1815668783","display_name":null,"funder_award_id":"NRF-2017R1A5A101559","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G3188333454","display_name":null,"funder_award_id":"2017R1A5A1015596","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G342704958","display_name":null,"funder_award_id":"funded","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G4681072368","display_name":null,"funder_award_id":"(NRF-2017R1A5A1015596)","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G4771439113","display_name":null,"funder_award_id":"2017R1A","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G5107008031","display_name":null,"funder_award_id":"NRF-2017R1A5A1015","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G5838582471","display_name":null,"funder_award_id":"NRF-2017R1A5A1015596","funder_id":"https://openalex.org/F4320322030","funder_display_name":"Ministry of Science, ICT and Future Planning"},{"id":"https://openalex.org/G6108659528","display_name":null,"funder_award_id":"NRF-2017R1A5A1015596","funder_id":"https://openalex.org/F4320328359","funder_display_name":"Ministry of Science and ICT, South Korea"},{"id":"https://openalex.org/G6137679533","display_name":null,"funder_award_id":"2017R1A5A1015596","funder_id":"https://openalex.org/F4320328359","funder_display_name":"Ministry of Science and ICT, South Korea"},{"id":"https://openalex.org/G8457556697","display_name":null,"funder_award_id":"NRF-2017R1A5A1015596","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G8507858374","display_name":null,"funder_award_id":"NRF-2017R1A5A1015596","funder_id":"https://openalex.org/F4320320671","funder_display_name":"National Research Foundation"},{"id":"https://openalex.org/G8777659018","display_name":null,"funder_award_id":"NRF-2017R1A","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"},{"id":"https://openalex.org/G982292920","display_name":null,"funder_award_id":"NRF-20","funder_id":"https://openalex.org/F4320322120","funder_display_name":"National Research Foundation of Korea"}],"funders":[{"id":"https://openalex.org/F4320320671","display_name":"National Research Foundation","ror":"https://ror.org/05s0g1g46"},{"id":"https://openalex.org/F4320322030","display_name":"Ministry of Science, ICT and Future Planning","ror":"https://ror.org/032e49973"},{"id":"https://openalex.org/F4320322120","display_name":"National Research Foundation of Korea","ror":"https://ror.org/013aysd81"},{"id":"https://openalex.org/F4320328359","display_name":"Ministry of Science and ICT, South Korea","ror":"https://ror.org/01wpjm123"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2902554438.pdf","grobid_xml":"https://content.openalex.org/works/W2902554438.grobid-xml"},"referenced_works_count":28,"referenced_works":["https://openalex.org/W1972453383","https://openalex.org/W1976723861","https://openalex.org/W1981111830","https://openalex.org/W1981246897","https://openalex.org/W1985278913","https://openalex.org/W1989977532","https://openalex.org/W2008268810","https://openalex.org/W2011989160","https://openalex.org/W2023895116","https://openalex.org/W2033285419","https://openalex.org/W2038769905","https://openalex.org/W2040077535","https://openalex.org/W2065088822","https://openalex.org/W2067459687","https://openalex.org/W2083045237","https://openalex.org/W2089645885","https://openalex.org/W2091921805","https://openalex.org/W2101012117","https://openalex.org/W2109969913","https://openalex.org/W2114967599","https://openalex.org/W2122235704","https://openalex.org/W2125628414","https://openalex.org/W2140401938","https://openalex.org/W2159759971","https://openalex.org/W2170195027","https://openalex.org/W2343412983","https://openalex.org/W2564752491","https://openalex.org/W2738968590"],"related_works":["https://openalex.org/W2732360296","https://openalex.org/W1994871954","https://openalex.org/W4297152434","https://openalex.org/W2072858761","https://openalex.org/W2122132874","https://openalex.org/W4200107443","https://openalex.org/W4239033438","https://openalex.org/W1540261775","https://openalex.org/W2067862553","https://openalex.org/W2777534421"],"abstract_inverted_index":{"Photoplethysmography":[0],"(PPG)":[1],"of":[2,15,27,37,79,94,129,135,163,169,176,183],"the":[3,16,24,38,46,49,58,80,92,95,121,149,173,180,184,189,192],"foot":[4,21,39,47,201],"sole":[5,40,81,185],"could":[6],"provide":[7],"additional":[8],"health-related":[9],"information":[10],"compared":[11],"with":[12,87,116,140],"traditional":[13],"PPG":[14,22,36,62,187,202],"finger":[17],"or":[18],"wrist.":[19],"Previously,":[20],"required":[23],"procedural":[25],"binding":[26,42],"a":[28,53,124,133,146,158,167],"light-emitting":[29],"diode":[30],"(LED)-photodetector":[31],"(PD)":[32],"pair.":[33],"We":[34,76],"achieved":[35],"without":[41],"any":[43],"sensors":[44,152],"to":[45,69,153],"while":[48],"participant":[50],"stood":[51],"in":[52],"natural":[54],"standing":[55],"position":[56],"on":[57,91,172],"testing":[59],"device.":[60],"Foot":[61],"was":[63,188],"performed":[64],"using":[65,203],"multiple":[66,204],"LED-PD":[67,89,178,205],"pairs":[68,90,206],"overcome":[70],"motion":[71],"artefacts":[72],"caused":[73],"by":[74,105],"stabilization.":[75],"identified":[77],"regions":[78],"suitable":[82],"for":[83,186,209],"reliable":[84],"sensor":[85],"positioning":[86],"optimal":[88,177],"basis":[93],"estimated":[96],"heart":[97],"rate":[98],"(HR)":[99],"and":[100,120,132,151,166,212],"signal":[101],"quality":[102],"index":[103],"derived":[104],"dynamic":[106],"time":[107],"warping":[108],"(wSQI).":[109],"The":[110,137],"first":[111],"experiment":[112,139],"included":[113],"four":[114],"participants":[115],"direct":[117],"skin-to-sensor":[118],"contact,":[119],"results":[122],"showed":[123],"mean":[125,159],"HR":[126,160,210],"estimation":[127,161],"error":[128,162],"0.01":[130],"beats/min":[131,165],"wSQI":[134,168],"0.909.":[136],"extended":[138],"53":[141],"participants,":[142],"which":[143],"involved":[144],"including":[145],"gap":[147],"between":[148],"skin":[150],"consider":[154],"real-life":[155],"applications,":[156],"yielded":[157],"0.638":[164],"0.751.":[170],"Based":[171],"selection":[174],"ratio":[175],"pairs,":[179],"best":[181],"region":[182],"midfoot,":[190],"except":[191],"medial":[193],"longitudinal":[194],"arch.":[195],"In":[196],"conclusion,":[197],"we":[198],"confirmed":[199],"that":[200],"is":[207],"appropriate":[208],"evaluation":[211],"further":[213],"applications.":[214]},"counts_by_year":[{"year":2025,"cited_by_count":5},{"year":2024,"cited_by_count":5},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":3},{"year":2020,"cited_by_count":1}],"updated_date":"2026-03-20T23:20:44.827607","created_date":"2025-10-10T00:00:00"}