{"id":"https://openalex.org/W2936922997","doi":"https://doi.org/10.1093/sleep/zsz067.042","title":"0043 Circadian Rhythm of Energy Expenditure and Substrate Utilization During Constant Routine Conditions","display_name":"0043 Circadian Rhythm of Energy Expenditure and Substrate Utilization During Constant Routine Conditions","publication_year":2019,"publication_date":"2019-04-01","ids":{"openalex":"https://openalex.org/W2936922997","doi":"https://doi.org/10.1093/sleep/zsz067.042","mag":"2936922997"},"language":"en","primary_location":{"id":"doi:10.1093/sleep/zsz067.042","doi":"https://doi.org/10.1093/sleep/zsz067.042","is_oa":false,"landing_page_url":"https://doi.org/10.1093/sleep/zsz067.042","pdf_url":null,"source":{"id":"https://openalex.org/S42921845","display_name":"SLEEP","issn_l":"0161-8105","issn":["0161-8105","1550-9109"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","erih-plus","jufo-2","ki-jl-2","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sleep","raw_type":"journal-article"},"volume":null,"type":"conference-abstract","indexed_in":["crossref"],"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/A5110763295","display_name":"Sarah J. Morton","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I92446798","display_name":"Colorado State University","ror":"https://ror.org/03k1gpj17","country_code":"US","type":"education","lineage":["https://openalex.org/I92446798"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Sarah J Morton","raw_affiliation_strings":["Colorado State University, Fort Collins, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Colorado State University, Fort Collins, CO, USA","institution_ids":["https://openalex.org/I92446798"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5084088671","display_name":"Corey A. Rynders","orcid":"https://orcid.org/0000-0001-5767-6261","observed_orcids":["https://orcid.org/0000-0001-5767-6261"]},"institutions":[{"id":"https://openalex.org/I51713134","display_name":"University of Colorado Anschutz","ror":"https://ror.org/03wmf1y16","country_code":"US","type":"education","lineage":["https://openalex.org/I51713134"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Corey A Rynders","raw_affiliation_strings":["University of Colorado Anschutz Medical Campus, Aurora, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Colorado Anschutz Medical Campus, Aurora, CO, USA","institution_ids":["https://openalex.org/I51713134"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066620111","display_name":"Emma J. Tussey","orcid":"https://orcid.org/0000-0002-5152-0474","observed_orcids":["https://orcid.org/0000-0002-5152-0474"]},"institutions":[{"id":"https://openalex.org/I51713134","display_name":"University of Colorado Anschutz","ror":"https://ror.org/03wmf1y16","country_code":"US","type":"education","lineage":["https://openalex.org/I51713134"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Emma Tussey","raw_affiliation_strings":["University of Colorado Anschutz Medical Campus, Aurora, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Colorado Anschutz Medical Campus, Aurora, CO, USA","institution_ids":["https://openalex.org/I51713134"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5102968543","display_name":"Daniel H. Bessesen","orcid":"https://orcid.org/0000-0002-8242-9198","observed_orcids":["https://orcid.org/0000-0002-8242-9198"]},"institutions":[{"id":"https://openalex.org/I51713134","display_name":"University of Colorado Anschutz","ror":"https://ror.org/03wmf1y16","country_code":"US","type":"education","lineage":["https://openalex.org/I51713134"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Daniel H Bessesen","raw_affiliation_strings":["University of Colorado Anschutz Medical Campus, Aurora, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Colorado Anschutz Medical Campus, Aurora, CO, USA","institution_ids":["https://openalex.org/I51713134"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5004701207","display_name":"Kenneth P. Wright","orcid":"https://orcid.org/0000-0002-1781-7469","observed_orcids":["https://orcid.org/0000-0002-1781-7469"]},"institutions":[{"id":"https://openalex.org/I188538660","display_name":"University of Colorado Boulder","ror":"https://ror.org/02ttsq026","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Kenneth P Wright","raw_affiliation_strings":["University of Colorado Boulder, Boulder, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"University of Colorado Boulder, Boulder, CO, USA","institution_ids":["https://openalex.org/I188538660"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5058721392","display_name":"Josiane L. Broussard","orcid":"https://orcid.org/0000-0002-6824-8294","observed_orcids":["https://orcid.org/0000-0002-6824-8294"]},"institutions":[{"id":"https://openalex.org/I188538660","display_name":"University of Colorado Boulder","ror":"https://ror.org/02ttsq026","country_code":"US","type":"education","lineage":["https://openalex.org/I188538660"]},{"id":"https://openalex.org/I51713134","display_name":"University of Colorado Anschutz","ror":"https://ror.org/03wmf1y16","country_code":"US","type":"education","lineage":["https://openalex.org/I51713134"]},{"id":"https://openalex.org/I92446798","display_name":"Colorado State University","ror":"https://ror.org/03k1gpj17","country_code":"US","type":"education","lineage":["https://openalex.org/I92446798"]}],"countries":["US"],"is_corresponding":false,"raw_author_name":"Josiane L Broussard","raw_affiliation_strings":["Colorado State University, Fort Collins, CO, USA","University of Colorado Anschutz Medical Campus, Aurora, CO, USA","University of Colorado Boulder, Boulder, CO, USA"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Colorado State University, Fort Collins, CO, USA","institution_ids":["https://openalex.org/I92446798"]},{"raw_affiliation_string":"University of Colorado Anschutz Medical Campus, Aurora, CO, USA","institution_ids":["https://openalex.org/I51713134"]},{"raw_affiliation_string":"University of Colorado Boulder, Boulder, CO, USA","institution_ids":["https://openalex.org/I188538660"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":3,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":4388,"currency":"USD","value_usd":4388},"apc_paid":null,"fwci":null,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":null,"cited_by_percentile_year":null,"biblio":{"volume":"42","issue":"Supplement_1","first_page":"A18","last_page":"A18"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10342","display_name":"Circadian rhythm and melatonin","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2807","display_name":"Endocrine and Autonomic Systems"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},"topics":[{"id":"https://openalex.org/T10342","display_name":"Circadian rhythm and melatonin","score":0.9976000189781189,"subfield":{"id":"https://openalex.org/subfields/2807","display_name":"Endocrine and Autonomic Systems"},"field":{"id":"https://openalex.org/fields/28","display_name":"Neuroscience"},"domain":{"id":"https://openalex.org/domains/1","display_name":"Life Sciences"}},{"id":"https://openalex.org/T11373","display_name":"Sleep and Work-Related Fatigue","score":0.0006000000284984708,"subfield":{"id":"https://openalex.org/subfields/3205","display_name":"Experimental and Cognitive Psychology"},"field":{"id":"https://openalex.org/fields/32","display_name":"Psychology"},"domain":{"id":"https://openalex.org/domains/2","display_name":"Social Sciences"}},{"id":"https://openalex.org/T10489","display_name":"Regulation of Appetite and Obesity","score":0.0003000000142492354,"subfield":{"id":"https://openalex.org/subfields/2807","display_name":"Endocrine and Autonomic Systems"},"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/circadian-rhythm","display_name":"circadian rhythm","score":0.9990000128746033},{"id":"https://openalex.org/keywords/energy-expenditure","display_name":"energy expenditure","score":0.8820000290870667},{"id":"https://openalex.org/keywords/substrate-utilization","display_name":"substrate utilization","score":0.7649999856948853},{"id":"https://openalex.org/keywords/respiratory-quotient","display_name":"respiratory quotient","score":0.9309999942779541},{"id":"https://openalex.org/keywords/carbohydrate-oxidation","display_name":"carbohydrate oxidation","score":0.9319999814033508},{"id":"https://openalex.org/keywords/fat-oxidation","display_name":"fat oxidation","score":0.9980000257492065},{"id":"https://openalex.org/keywords/dim-light-melatonin-onset","display_name":"dim light melatonin onset","score":0.9670000076293945},{"id":"https://openalex.org/keywords/energy-metabolism","display_name":"energy metabolism","score":0.8330000042915344},{"id":"https://openalex.org/keywords/core-body-temperature","display_name":"core body temperature","score":0.5720000267028809},{"id":"https://openalex.org/keywords/saliva-melatonin","display_name":"saliva melatonin","score":0.6579999923706055}],"concepts":[{"id":"https://openalex.org/C2776476923","wikidata":"https://www.wikidata.org/wiki/Q7725","display_name":"Evening","level":2,"score":0.8251734972000122},{"id":"https://openalex.org/C2778182776","wikidata":"https://www.wikidata.org/wiki/Q180912","display_name":"Melatonin","level":2,"score":0.7446142435073853},{"id":"https://openalex.org/C121446783","wikidata":"https://www.wikidata.org/wiki/Q208353","display_name":"Circadian rhythm","level":2,"score":0.714674711227417},{"id":"https://openalex.org/C98488077","wikidata":"https://www.wikidata.org/wiki/Q1428512","display_name":"Respiratory quotient","level":2,"score":0.5856518149375916},{"id":"https://openalex.org/C2988147884","wikidata":"https://www.wikidata.org/wiki/Q5377024","display_name":"Energy expenditure","level":2,"score":0.552902102470398},{"id":"https://openalex.org/C135343436","wikidata":"https://www.wikidata.org/wiki/Q170406","display_name":"Rhythm","level":2,"score":0.5400943756103516},{"id":"https://openalex.org/C187765855","wikidata":"https://www.wikidata.org/wiki/Q506874","display_name":"Chronobiology","level":3,"score":0.5293090343475342},{"id":"https://openalex.org/C139566807","wikidata":"https://www.wikidata.org/wiki/Q25324083","display_name":"Resting energy expenditure","level":3,"score":0.5169526934623718},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.4919564425945282},{"id":"https://openalex.org/C134018914","wikidata":"https://www.wikidata.org/wiki/Q162606","display_name":"Endocrinology","level":1,"score":0.4628526270389557},{"id":"https://openalex.org/C140793950","wikidata":"https://www.wikidata.org/wiki/Q168091","display_name":"Animal science","level":1,"score":0.45470696687698364},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.4251238703727722},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.3275214731693268},{"id":"https://openalex.org/C86803240","wikidata":"https://www.wikidata.org/wiki/Q420","display_name":"Biology","level":0,"score":0.1940484344959259},{"id":"https://openalex.org/C1276947","wikidata":"https://www.wikidata.org/wiki/Q333","display_name":"Astronomy","level":1,"score":0.0},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.0}],"mesh":[],"locations_count":1,"locations":[{"id":"doi:10.1093/sleep/zsz067.042","doi":"https://doi.org/10.1093/sleep/zsz067.042","is_oa":false,"landing_page_url":"https://doi.org/10.1093/sleep/zsz067.042","pdf_url":null,"source":{"id":"https://openalex.org/S42921845","display_name":"SLEEP","issn_l":"0161-8105","issn":["0161-8105","1550-9109"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-b","doyens","erih-plus","jufo-2","ki-jl-2","medline","norway-2","poland-140","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310311648","host_organization_name":"Oxford University Press","host_organization_lineage":["https://openalex.org/P4310311648","https://openalex.org/P4310311647"],"host_organization_lineage_names":["Oxford University Press","University of Oxford"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Sleep","raw_type":"journal-article"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.8560000061988831,"display_name":"Good health and well-being","id":"https://metadata.un.org/sdg/3"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W3032694031","https://openalex.org/W2899624325","https://openalex.org/W2609889802","https://openalex.org/W2803050630","https://openalex.org/W3028709181","https://openalex.org/W2041505783","https://openalex.org/W4210330286","https://openalex.org/W4226345415","https://openalex.org/W2070708048","https://openalex.org/W2943400208"],"abstract_inverted_index":{"Findings":[0],"from":[1,137],"previous":[2],"studies":[3,275],"indicate":[4],"daily":[5],"variation":[6],"in":[7,15,23,78,95,113,177,252],"energy":[8,24,40,293],"expenditure":[9,25],"(EE)":[10],"depends":[11],"on":[12],"circadian":[13,51,290],"phase":[14],"humans,":[16],"though":[17],"findings":[18,215],"have":[19],"been":[20],"inconsistent.":[21],"Changes":[22],"throughout":[26,200],"the":[27,50,93,96,178,189,201,225,233,236,253,268,300],"day":[28],"and":[29,59,98,128,140,173,182,197,221,249,258,282,314],"night":[30],"during":[31,188,232],"non-fasting":[32],"conditions":[33],"are":[34,285],"important":[35],"to":[36,48,155,169,193,212,224,267,287,309,312,326],"understand":[37],"factors":[38],"influencing":[39],"metabolism.":[41,294],"The":[42],"aim":[43],"of":[44,53,87,218,235,272,280,317,321],"this":[45],"study":[46,83,244],"was":[47,135,142,174,209,297],"determine":[49,262,288],"rhythm":[52],"resting":[54],"EE,":[55,219,247],"respiratory":[56],"quotient":[57],"(RQ),":[58],"substrate":[60,283],"utilization":[61,284],"using":[62,147],"a":[63,79,315],"constant":[64,81,114,122,242],"routine":[65,82,243],"protocol.":[66],"Six":[67],"healthy":[68],"adults":[69],"(3F,":[70],"age":[71],"27.7\u00b12.2":[72],"years,":[73],"BMI":[74],"24.7\u00b13.2;":[75],"mean\u00b1SD)":[76],"participated":[77],"26-hour":[80],"following":[84],"1":[85],"week":[86],"outpatient":[88],"monitoring.":[89],"Subjects":[90],"arrived":[91],"at":[92,107,164],"laboratory":[94],"evening":[97],"were":[99,153,186],"provided":[100],"an":[101],"8-hour":[102],"sleep":[103],"opportunity.":[104],"After":[105],"waking":[106],"their":[108],"habitual":[109],"time,":[110],"participants":[111],"remained":[112,198],"conditions,":[115],"which":[116,230],"included":[117],"dim":[118,156],"light":[119,157],"(<8":[120],"lux),":[121],"posture":[123],"(bed":[124],"rest),":[125],"ambient":[126],"temperature,":[127],"consumed":[129],"small":[130],"identical":[131],"hourly":[132,138],"meals.":[133],"Melatonin":[134],"measured":[136,143],"saliva":[139],"EE":[141,151,167,281],"every":[144],"3":[145],"hours":[146],"hood":[148],"indirect":[149],"calorimetry.":[150],"data":[152],"aligned":[154],"melatonin":[158],"onset":[159],"(DLMO).":[160],"Average":[161],"DLMO":[162,172],"occurred":[163],"20:10h":[165],"(\u00b118min).":[166],"began":[168,192],"decline":[170,194],"before":[171,195],"lowest":[175,246],"early":[176],"biological":[179,190,202,237,254],"night.":[180,203,238,255],"RQ":[181],"carbohydrate":[183],"oxidation":[184,207],"(CHO-ox)":[185],"highest":[187,210],"day,":[191],"DLMO,":[196],"lower":[199],"In":[204,239],"contrast,":[205,240],"fat":[206],"(FAT-ox)":[208],"close":[211,223],"DLMO.":[213],"Previous":[214],"show":[216],"nadirs":[217],"RQ,":[220,248],"CHO-ox":[222,250],"core":[226],"body":[227],"temperature":[228],"minimum,":[229],"occurs":[231],"middle":[234],"our":[241],"found":[245],"earlier":[251],"However,":[256],"current":[257],"prior":[259],"assessments":[260],"cannot":[261],"precise":[263],"nadir":[264],"timing":[265,291],"due":[266],"relatively":[269],"low":[270],"frequency":[271],"sampling.":[273],"Non-fasting":[274],"with":[276],"more":[277],"frequent":[278],"sampling":[279],"needed":[286],"how":[289],"impacts":[292],"This":[295],"work":[296],"supported":[298],"by":[299],"Colorado":[301,318],"Nutrition":[302],"Obesity":[303],"Research":[304,322],"Center":[305],"P30":[306],"DK048520-21,":[307],"K01DK113063":[308],"CR,":[310],"K01DK110138":[311],"JLB,":[313],"University":[316],"Vice":[319],"Chancellor":[320],"Innovative":[323],"Seed":[324],"Grant":[325],"JLB.":[327]},"counts_by_year":[],"updated_date":"2026-09-22T06:50:58.402377","created_date":"2019-04-25T00:00:00"}