{"id":"https://openalex.org/W2899905353","doi":"https://doi.org/10.1155/2018/4953273","title":"On the Standardization of Approximate Entropy: Multidimensional Approximate Entropy Index Evaluated on Short\u2010Term HRV Time Series","display_name":"On the Standardization of Approximate Entropy: Multidimensional Approximate Entropy Index Evaluated on Short\u2010Term HRV Time Series","publication_year":2018,"publication_date":"2018-01-01","ids":{"openalex":"https://openalex.org/W2899905353","doi":"https://doi.org/10.1155/2018/4953273","mag":"2899905353"},"language":"en","primary_location":{"id":"doi:10.1155/2018/4953273","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2018/4953273","pdf_url":"https://downloads.hindawi.com/journals/complexity/2018/4953273.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},"type":"article","indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://downloads.hindawi.com/journals/complexity/2018/4953273.pdf","any_repository_has_fulltext":true},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5038947178","display_name":"Juan Bolea","orcid":"https://orcid.org/0000-0003-4068-127X"},"institutions":[{"id":"https://openalex.org/I255234318","display_name":"Universidad de Zaragoza","ror":"https://ror.org/012a91z28","country_code":"ES","type":"education","lineage":["https://openalex.org/I255234318"]},{"id":"https://openalex.org/I4210105141","display_name":"Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine","ror":"https://ror.org/01gm5f004","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210105141"]},{"id":"https://openalex.org/I4210136512","display_name":"Instituto de Investigaci\u00f3n Sanitaria Arag\u00f3n","ror":"https://ror.org/03njn4610","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210136512"]}],"countries":["ES"],"is_corresponding":true,"raw_author_name":"Juan Bolea","raw_affiliation_strings":["BSICoS Group, Aragn Institute of Engineering Research (I3A), IIS Aragn, Universidad de Zaragoza, Zaragoza, Spain","Centro de Investigacin Biomdica en Red: Bioingeniera, Biomateriales y Nanomedicina (CIBER), Madrid, Spain","BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid"],"raw_orcid":"https://orcid.org/0000-0003-4068-127X","affiliations":[{"raw_affiliation_string":"BSICoS Group, Aragn Institute of Engineering Research (I3A), IIS Aragn, Universidad de Zaragoza, Zaragoza, Spain","institution_ids":["https://openalex.org/I255234318"]},{"raw_affiliation_string":"Centro de Investigacin Biomdica en Red: Bioingeniera, Biomateriales y Nanomedicina (CIBER), Madrid, Spain","institution_ids":["https://openalex.org/I4210105141"]},{"raw_affiliation_string":"BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","institution_ids":["https://openalex.org/I255234318","https://openalex.org/I4210136512"]},{"raw_affiliation_string":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid","institution_ids":["https://openalex.org/I4210105141"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108167481","display_name":"Raquel Bail\u00f3n","orcid":"https://orcid.org/0000-0003-1272-0550"},"institutions":[{"id":"https://openalex.org/I255234318","display_name":"Universidad de Zaragoza","ror":"https://ror.org/012a91z28","country_code":"ES","type":"education","lineage":["https://openalex.org/I255234318"]},{"id":"https://openalex.org/I4210105141","display_name":"Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine","ror":"https://ror.org/01gm5f004","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210105141"]},{"id":"https://openalex.org/I4210136512","display_name":"Instituto de Investigaci\u00f3n Sanitaria Arag\u00f3n","ror":"https://ror.org/03njn4610","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210136512"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Raquel Bail\u00f3n","raw_affiliation_strings":["BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","institution_ids":["https://openalex.org/I255234318","https://openalex.org/I4210136512"]},{"raw_affiliation_string":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid","institution_ids":["https://openalex.org/I4210105141"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5065688490","display_name":"Esther Pueyo","orcid":"https://orcid.org/0000-0002-1960-407X"},"institutions":[{"id":"https://openalex.org/I255234318","display_name":"Universidad de Zaragoza","ror":"https://ror.org/012a91z28","country_code":"ES","type":"education","lineage":["https://openalex.org/I255234318"]},{"id":"https://openalex.org/I4210105141","display_name":"Biomedical Research Networking Center in Bioengineering, Biomaterials and Nanomedicine","ror":"https://ror.org/01gm5f004","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210105141"]},{"id":"https://openalex.org/I4210136512","display_name":"Instituto de Investigaci\u00f3n Sanitaria Arag\u00f3n","ror":"https://ror.org/03njn4610","country_code":"ES","type":"other","lineage":["https://openalex.org/I4210136512"]}],"countries":["ES"],"is_corresponding":false,"raw_author_name":"Esther Pueyo","raw_affiliation_strings":["BSICoS Group, Aragn Institute of Engineering Research (I3A), IIS Aragn, Universidad de Zaragoza, Zaragoza, Spain","Centro de Investigacin Biomdica en Red: Bioingeniera, Biomateriales y Nanomedicina (CIBER), Madrid, Spain","BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"BSICoS Group, Aragn Institute of Engineering Research (I3A), IIS Aragn, Universidad de Zaragoza, Zaragoza, Spain","institution_ids":["https://openalex.org/I255234318"]},{"raw_affiliation_string":"Centro de Investigacin Biomdica en Red: Bioingeniera, Biomateriales y Nanomedicina (CIBER), Madrid, Spain","institution_ids":["https://openalex.org/I4210105141"]},{"raw_affiliation_string":"BSICoS Group, Arag\u00f3n Institute of Engineering Research (I3A), IIS Arag\u00f3n, Universidad de Zaragoza, Zaragoza","institution_ids":["https://openalex.org/I255234318","https://openalex.org/I4210136512"]},{"raw_affiliation_string":"Centro de Investigaci\u00f3n Biom\u00e9dica en Red: Bioingenier\u00eda, Biomateriales y Nanomedicina (CIBER), Madrid","institution_ids":["https://openalex.org/I4210105141"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5038947178"],"corresponding_institution_ids":["https://openalex.org/I255234318","https://openalex.org/I4210105141","https://openalex.org/I4210136512"],"apc_list":{"value":2550,"currency":"USD","value_usd":2550},"apc_paid":{"value":2550,"currency":"USD","value_usd":2550},"fwci":0.7817,"has_fulltext":true,"cited_by_count":14,"citation_normalized_percentile":{"value":0.7498334,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":89,"max":98},"biblio":{"volume":"2018","issue":"1","first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.9997000098228455,"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"}},"topics":[{"id":"https://openalex.org/T10745","display_name":"Heart Rate Variability and Autonomic Control","score":0.9997000098228455,"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/T11196","display_name":"Non-Invasive Vital Sign Monitoring","score":0.9769999980926514,"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/T10429","display_name":"EEG and Brain-Computer Interfaces","score":0.9739000201225281,"subfield":{"id":"https://openalex.org/subfields/2805","display_name":"Cognitive Neuroscience"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/approximate-entropy","display_name":"Approximate entropy","score":0.7418326139450073},{"id":"https://openalex.org/keywords/algorithm","display_name":"Algorithm","score":0.4486362338066101},{"id":"https://openalex.org/keywords/artificial-intelligence","display_name":"Artificial intelligence","score":0.4256448745727539},{"id":"https://openalex.org/keywords/computer-science","display_name":"Computer science","score":0.40754061937332153},{"id":"https://openalex.org/keywords/mathematics","display_name":"Mathematics","score":0.35424086451530457},{"id":"https://openalex.org/keywords/pattern-recognition","display_name":"Pattern recognition (psychology)","score":0.2679547667503357}],"concepts":[{"id":"https://openalex.org/C86859247","wikidata":"https://www.wikidata.org/wiki/Q4781760","display_name":"Approximate entropy","level":3,"score":0.7418326139450073},{"id":"https://openalex.org/C11413529","wikidata":"https://www.wikidata.org/wiki/Q8366","display_name":"Algorithm","level":1,"score":0.4486362338066101},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.4256448745727539},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.40754061937332153},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.35424086451530457},{"id":"https://openalex.org/C153180895","wikidata":"https://www.wikidata.org/wiki/Q7148389","display_name":"Pattern recognition (psychology)","level":2,"score":0.2679547667503357}],"mesh":[],"locations_count":4,"locations":[{"id":"doi:10.1155/2018/4953273","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2018/4953273","pdf_url":"https://downloads.hindawi.com/journals/complexity/2018/4953273.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},{"id":"pmh:oai:RePEc:hin:complx:4953273","is_oa":false,"landing_page_url":"http://downloads.hindawi.com/journals/8503/2018/4953273.xml","pdf_url":null,"source":{"id":"https://openalex.org/S4306401271","display_name":"RePEc: Research Papers in Economics","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":"https://openalex.org/I77793887","host_organization_name":"Federal Reserve Bank of St. Louis","host_organization_lineage":["https://openalex.org/I77793887"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":null,"raw_type":"article"},{"id":"pmh:oai:doaj.org/article:6a538de346564f29bdb74868db055631","is_oa":true,"landing_page_url":"https://doaj.org/article/6a538de346564f29bdb74868db055631","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":"cc-by-sa","license_id":"https://openalex.org/licenses/cc-by-sa","version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Complexity, Vol 2018 (2018)","raw_type":"article"},{"id":"pmh:oai:zaguan.unizar.es:75732","is_oa":true,"landing_page_url":"http://zaguan.unizar.es/record/75732","pdf_url":null,"source":{"id":"https://openalex.org/S4306402461","display_name":"Zaguan (Universidad de Zaragoza)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"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":"","raw_type":"info:eu-repo/semantics/article"}],"best_oa_location":{"id":"doi:10.1155/2018/4953273","is_oa":true,"landing_page_url":"https://doi.org/10.1155/2018/4953273","pdf_url":"https://downloads.hindawi.com/journals/complexity/2018/4953273.pdf","source":{"id":"https://openalex.org/S207319443","display_name":"Complexity","issn_l":"1076-2787","issn":["1076-2787","1099-0526"],"is_oa":true,"is_in_doaj":true,"is_core":true,"host_organization":"https://openalex.org/P4310319869","host_organization_name":"Hindawi Publishing Corporation","host_organization_lineage":["https://openalex.org/P4310319869"],"host_organization_lineage_names":["Hindawi Publishing Corporation"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Complexity","raw_type":"journal-article"},"sustainable_development_goals":[],"awards":[{"id":"https://openalex.org/G3321520901","display_name":null,"funder_award_id":"ERC-2014-StG 638284","funder_id":"https://openalex.org/F4320338335","funder_display_name":"H2020 European Research Council"}],"funders":[{"id":"https://openalex.org/F4320321837","display_name":"Ministerio de Econom\u00eda y Competitividad","ror":"https://ror.org/034900433"},{"id":"https://openalex.org/F4320338335","display_name":"H2020 European Research Council","ror":"https://ror.org/0472cxd90"}],"has_content":{"grobid_xml":true,"pdf":true},"content_urls":{"pdf":"https://content.openalex.org/works/W2899905353.pdf","grobid_xml":"https://content.openalex.org/works/W2899905353.grobid-xml"},"referenced_works_count":58,"referenced_works":["https://openalex.org/W171636110","https://openalex.org/W1169338085","https://openalex.org/W1776514298","https://openalex.org/W1837575649","https://openalex.org/W1862394037","https://openalex.org/W1976490990","https://openalex.org/W1981079849","https://openalex.org/W1986488785","https://openalex.org/W2000150627","https://openalex.org/W2010220218","https://openalex.org/W2010461070","https://openalex.org/W2014683958","https://openalex.org/W2020793555","https://openalex.org/W2031365860","https://openalex.org/W2031377725","https://openalex.org/W2037790534","https://openalex.org/W2042665170","https://openalex.org/W2045379387","https://openalex.org/W2045670852","https://openalex.org/W2048355422","https://openalex.org/W2049571914","https://openalex.org/W2051264742","https://openalex.org/W2051465940","https://openalex.org/W2055442583","https://openalex.org/W2059851411","https://openalex.org/W2077204677","https://openalex.org/W2078830405","https://openalex.org/W2084146986","https://openalex.org/W2088633034","https://openalex.org/W2093266575","https://openalex.org/W2094764414","https://openalex.org/W2102244548","https://openalex.org/W2110815905","https://openalex.org/W2121383959","https://openalex.org/W2133797783","https://openalex.org/W2134919037","https://openalex.org/W2144015360","https://openalex.org/W2151837563","https://openalex.org/W2152702278","https://openalex.org/W2154410580","https://openalex.org/W2156075695","https://openalex.org/W2160867523","https://openalex.org/W2162800060","https://openalex.org/W2164404494","https://openalex.org/W2167595074","https://openalex.org/W2172549965","https://openalex.org/W2285072859","https://openalex.org/W2333775360","https://openalex.org/W2399495722","https://openalex.org/W2413730280","https://openalex.org/W2553098428","https://openalex.org/W2567028240","https://openalex.org/W2587634198","https://openalex.org/W2617092711","https://openalex.org/W2773861965","https://openalex.org/W2792689897","https://openalex.org/W2794029527","https://openalex.org/W2897969798"],"related_works":["https://openalex.org/W2748952813","https://openalex.org/W1979597421","https://openalex.org/W4306685995","https://openalex.org/W2007980826","https://openalex.org/W4245490552","https://openalex.org/W4225152035","https://openalex.org/W2061531152","https://openalex.org/W3002753104","https://openalex.org/W2077600819","https://openalex.org/W1587224694"],"abstract_inverted_index":{"Background":[0],".":[1,100,196],"Nonlinear":[2],"heart":[3,182,442],"rate":[4,443],"variability":[5],"(HRV)":[6],"indices":[7,24],"have":[8],"extended":[9],"the":[10,19,38,54,59,74,89,123,138,173,176,213,275,297,323,336,406,434,447],"description":[11],"of":[12,18,22,37,40,51,73,93,125,133,157,175,192,215,230,252,263,296,381,409,441],"autonomic":[13],"nervous":[14],"system":[15],"(ANS)":[16],"regulation":[17],"heart.":[20],"One":[21],"those":[23],"is":[25,62,118,271,366],"approximate":[26,107,127,255,279,354],"entropy,":[27,108],"ApEn":[28,46,81,144],",":[29,47,117,365],"which":[30,64,287,402],"has":[31,65],"become":[32],"a":[33,41,48,79,115,130,207,224,250,283,309,319,332,363,379,394,423],"commonly":[34],"used":[35,170],"measure":[36],"irregularity":[39,440],"time":[42,152,190,199,386],"series.":[43,387],"To":[44],"calculate":[45],"priori":[49],"definition":[50],"parameters":[52],"like":[53],"threshold":[55,140],"on":[56,121,300],"similarity":[57,139,285],"and":[58,91,166,180,238,368],"embedding":[60,134,268,293],"dimension":[61],"required,":[63],"been":[66],"shown":[67],"to":[68,142,171,212,274,373,377,405,438],"be":[69,85],"critical":[70],"for":[71,78,87,227,241,244,260,278,291],"interpretation":[72,92],"results.":[75],"Thus,":[76],"searching":[77],"parameter\u2010free":[80,352],"\u2010based":[82],"index":[83,104,299],"could":[84],"advantageous":[86],"standardizing":[88],"use":[90],"this":[94,413],"widely":[95],"applied":[96],"entropy":[97,103,256,355],"measurement.":[98],"Methods":[99],"A":[101,110,202,219,314,327,350,358,389,418],"novel":[102,351],"called":[105],"multidimensional":[106,353],"M":[109,201,218,313,326,357,388,417],"p":[111,203,220,315,328,359,390,419],"E":[112,204,221,316,329,360,391,420],"n":[113,205,222,317,330,361,392,421],"m":[114,206,223,318,331,362,393,422],"x":[116,208,225,320,333,364,395,424],"proposed":[119,177,298,367],"based":[120],"summing":[122],"contribution":[124],"maximum":[126,143,254],"entropies":[128,280],"over":[129,370],"wide":[131],"range":[132,380],"dimensions":[135],"while":[136],"selecting":[137],"leading":[141],"value":[145],"in":[146,232,265,272,312,342,346,384,399,412,427],"each":[147],"dimension.":[148],"Synthetic":[149],"RR":[150,188],"interval":[151,189],"series":[153,191],"with":[154,282,308],"varying":[155],"levels":[156,262,383],"stochasticity,":[158],"generated":[159,233],"by":[160,446],"both":[161],"MIX(":[162,234],"P":[163,231,235],")":[164,236],"processes":[165,237],"white/pink":[167],"noise,":[168],"were":[169,185,210],"validate":[172],"properties":[174],"index.":[178],"Aging":[179],"congestive":[181],"failure":[183],"(CHF)":[184],"characterized":[186],"from":[187],"available":[193,301],"databases.":[194],"Results":[195],"In":[197],"synthetic":[198,371],"series,":[200],"values":[209,229,257,396,425],"proportional":[211],"level":[214],"randomness;":[216],"i.e.,":[217],"increased":[226,259],"higher":[228,261],"was":[239,249,306,339],"larger":[240,341],"white":[242],"than":[243,345],"pink":[245],"noise.":[246],"This":[247,270],"result":[248],"consequence":[251],"all":[253,266],"being":[258],"randomness":[264,382],"considered":[267],"dimensions.":[269,294],"contrast":[273],"results":[276,290],"obtained":[277],"computed":[281],"fixed":[284],"threshold,":[286],"presented":[288],"inconsistent":[289],"different":[292],"Evaluation":[295],"databases":[302],"revealed":[303],"that":[304],"aging":[305],"associated":[307],"notable":[310],"reduction":[311],"values.":[321],"On":[322],"other":[324],"hand,":[325],"evaluated":[334],"during":[335,433],"night":[337,435],"period":[338,436],"considerably":[340],"CHF":[343,428],"patients":[344,429],"healthy":[347,431],"subjects.":[348],"Conclusion.":[349],"index,":[356],"tested":[369],"data":[372],"confirm":[374],"its":[375],"capacity":[376],"represent":[378],"HRV":[385],"are":[397],"reduced":[398],"elderly":[400],"patients,":[401],"may":[403],"correspond":[404],"reported":[407],"loss":[408],"ANS":[410],"adaptability":[411],"population":[414],"segment.":[415],"Increased":[416],"measured":[426],"versus":[430],"subjects":[432],"point":[437],"greater":[439],"dynamics":[444],"caused":[445],"disease.":[448]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2025,"cited_by_count":2},{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":5},{"year":2021,"cited_by_count":3},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":1}],"updated_date":"2026-07-29T09:40:50.615796","created_date":"2025-10-10T00:00:00"}
