{"id":"https://openalex.org/W2461004372","doi":null,"title":"Determination of cardiac output by the CO2 - rebreathing method in fifteen-year-old boys subjected to graduated loading.","display_name":"Determination of cardiac output by the CO2 - rebreathing method in fifteen-year-old boys subjected to graduated loading.","publication_year":1977,"publication_date":"1977-01-01","ids":{"openalex":"https://openalex.org/W2461004372","mag":"2461004372","pmid":"https://pubmed.ncbi.nlm.nih.gov/140405"},"language":"en","primary_location":{"id":"pmid:140405","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/140405","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,"listed_in":[],"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":"Physiologia Bohemoslovaca","raw_type":"Journal Article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5006841422","display_name":"J P\u00e4rnat","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"J P\u00e4rnat","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5108602695","display_name":"V. Seliger","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"V Seliger","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5110282786","display_name":"Z Trefn\u00fd","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Z Trefn\u00fd","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":null,"display_name":"M Pauer","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"M Pauer","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.0,"has_fulltext":false,"cited_by_count":1,"citation_normalized_percentile":{"value":0.47134413,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"26","issue":"1","first_page":"85","last_page":"93"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11209","display_name":"Cardiovascular and exercise physiology","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"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/T11209","display_name":"Cardiovascular and exercise physiology","score":1.0,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"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/T11700","display_name":"Hemodynamic Monitoring and Therapy","score":9.999999747378752e-05,"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"}},{"id":"https://openalex.org/T10157","display_name":"Sports Performance and Training","score":0.0,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports Medicine"},"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/cardiac-output","display_name":"cardiac output","score":0.9909999966621399},{"id":"https://openalex.org/keywords/adolescents","display_name":"adolescents","score":0.7919999957084656},{"id":"https://openalex.org/keywords/cycle-ergometry","display_name":"cycle ergometry","score":0.656000018119812},{"id":"https://openalex.org/keywords/incremental-exercise-test","display_name":"incremental exercise test","score":0.5099999904632568},{"id":"https://openalex.org/keywords/oxygen-consumption","display_name":"oxygen consumption","score":0.8889999985694885},{"id":"https://openalex.org/keywords/vo2max","display_name":"VO2max","score":0.7639999985694885},{"id":"https://openalex.org/keywords/pulmonary-ventilation","display_name":"pulmonary ventilation","score":0.7570000290870667},{"id":"https://openalex.org/keywords/physical-work-capacity","display_name":"physical work capacity","score":0.8759999871253967},{"id":"https://openalex.org/keywords/physical-fitness","display_name":"physical fitness","score":0.5799999833106995},{"id":"https://openalex.org/keywords/non-invasive-cardiac-output-measurement","display_name":"non-invasive cardiac output measurement","score":0.6980000138282776}],"concepts":[{"id":"https://openalex.org/C117437137","wikidata":"https://www.wikidata.org/wiki/Q5038720","display_name":"Cardiorespiratory fitness","level":2,"score":0.8328275680541992},{"id":"https://openalex.org/C139940330","wikidata":"https://www.wikidata.org/wiki/Q596579","display_name":"Cardiac output","level":3,"score":0.8311653137207031},{"id":"https://openalex.org/C2778212704","wikidata":"https://www.wikidata.org/wiki/Q7115957","display_name":"Oxygen pulse","level":5,"score":0.6608036756515503},{"id":"https://openalex.org/C164705383","wikidata":"https://www.wikidata.org/wiki/Q10379","display_name":"Cardiology","level":1,"score":0.5839704275131226},{"id":"https://openalex.org/C196310339","wikidata":"https://www.wikidata.org/wiki/Q60354","display_name":"VO2 max","level":4,"score":0.5429595708847046},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5310903787612915},{"id":"https://openalex.org/C79959777","wikidata":"https://www.wikidata.org/wiki/Q754333","display_name":"Respiratory minute volume","level":3,"score":0.523094654083252},{"id":"https://openalex.org/C3018916160","wikidata":"https://www.wikidata.org/wiki/Q1370818","display_name":"Bicycle ergometer","level":4,"score":0.5011992454528809},{"id":"https://openalex.org/C200457457","wikidata":"https://www.wikidata.org/wiki/Q584049","display_name":"Ventilation (architecture)","level":2,"score":0.48622170090675354},{"id":"https://openalex.org/C2777953023","wikidata":"https://www.wikidata.org/wiki/Q1073121","display_name":"Heart rate","level":3,"score":0.4805353283882141},{"id":"https://openalex.org/C2988351347","wikidata":"https://www.wikidata.org/wiki/Q191733","display_name":"Pulse rate","level":3,"score":0.44491779804229736},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.43355679512023926},{"id":"https://openalex.org/C42219234","wikidata":"https://www.wikidata.org/wiki/Q131130","display_name":"Anesthesia","level":1,"score":0.3833824694156647},{"id":"https://openalex.org/C178853913","wikidata":"https://www.wikidata.org/wiki/Q1642137","display_name":"Hemodynamics","level":2,"score":0.22614112496376038},{"id":"https://openalex.org/C534529494","wikidata":"https://www.wikidata.org/wiki/Q7891","display_name":"Respiratory system","level":2,"score":0.1854904592037201},{"id":"https://openalex.org/C84393581","wikidata":"https://www.wikidata.org/wiki/Q82642","display_name":"Blood pressure","level":2,"score":0.14176595211029053},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.10001036524772644},{"id":"https://openalex.org/C97355855","wikidata":"https://www.wikidata.org/wiki/Q11473","display_name":"Thermodynamics","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000293","descriptor_name":"Adolescent","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002245","descriptor_name":"Carbon Dioxide","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D002302","descriptor_name":"Cardiac Output","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D005082","descriptor_name":"Physical Exertion","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D006334","descriptor_name":"Heart Function Tests","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"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":"D010100","descriptor_name":"Oxygen","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D010809","descriptor_name":"Physical Fitness","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D011674","descriptor_name":"Pulse","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D012119","descriptor_name":"Respiration","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"pmid:140405","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/140405","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,"listed_in":[],"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":"Physiologia Bohemoslovaca","raw_type":"Journal Article"},{"id":"mag:2461004372","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/140405","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,"listed_in":[],"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":null,"is_accepted":false,"is_published":false,"raw_source_name":"PubMed","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9537000060081482,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W2011213021","https://openalex.org/W1976423080","https://openalex.org/W2403616518","https://openalex.org/W1472848284","https://openalex.org/W2024031911","https://openalex.org/W1238790187","https://openalex.org/W2402650280","https://openalex.org/W35503707","https://openalex.org/W2328273444","https://openalex.org/W2411377643"],"abstract_inverted_index":{"The":[0,36,114],"dynamics":[1],"of":[2,31,116,126,130],"cardiac":[3,26,39,68,76],"output":[4,27,40,69,77],"changes":[5],"were":[6,34],"studied":[7],"in":[8,42,48,70,73],"23":[9],"15-year-old":[10],"boys":[11,134],"subjected":[12],"to":[13,17,60],"graduated":[14],"loading":[15,71],"up":[16],"maximum":[18,80,83],"on":[19],"an":[20],"bicycle":[21],"ergometer":[22],"and":[23,28,44,91,97,111,132],"relationships":[24],"between":[25,38,121],"other":[29],"indexes":[30,125],"cardiorespiratory":[32],"functions":[33],"determined.":[35],"correlation":[37],"(Q":[41],"1/min)":[43,49],"oxygen":[45,81,106],"consumption":[46],"(VO2":[47],"was":[50,58,138],"Q":[51],"=":[52],"6.84":[53],"+":[54],"5.64.":[55],"VO2.":[56],"CO2-rebreathing":[57],"found":[59],"be":[61],"a":[62],"suitable":[63],"non-invasive":[64],"method":[65],"for":[66],"determining":[67],"tests":[72],"adolescents.":[74],"Maximum":[75],"correlated":[78],"with":[79,101],"consumption,":[82],"pulmonary":[84],"ventilation,":[85],"body":[86,89],"weight,":[87],"lean":[88],"mass":[90],"physical":[92,128],"working":[93],"capacity":[94],"W":[95],"170":[96],"did":[98],"not":[99,139],"correlate":[100],"systolic":[102],"volume,":[103],"the":[104,108,122,127],"arteriovenous":[105],"difference,":[107],"pulse":[109],"rate":[110],"ballistocardiographic":[112],"force.":[113],"absence":[115],"any":[117],"statistically":[118],"significant":[119],"differences":[120],"various":[123],"functional":[124],"fitness":[129],"trained":[131],"untrained":[133],"indicates":[135],"that":[136],"training":[137],"very":[140],"effective.":[141]},"counts_by_year":[],"updated_date":"2026-10-31T12:09:11.096373","created_date":"2016-07-22T00:00:00"}