{"id":"https://openalex.org/W2000318393","doi":"https://doi.org/10.1001/jama.1986.03380020075015","title":"Hyponatremia and Ultramarathons","display_name":"Hyponatremia and Ultramarathons","publication_year":1986,"publication_date":"1986-07-11","ids":{"openalex":"https://openalex.org/W2000318393","doi":"https://doi.org/10.1001/jama.1986.03380020075015","mag":"2000318393","pmid":"https://pubmed.ncbi.nlm.nih.gov/2941598"},"language":"en","primary_location":{"id":"doi:10.1001/jama.1986.03380020075015","doi":"https://doi.org/10.1001/jama.1986.03380020075015","is_oa":false,"landing_page_url":"https://doi.org/10.1001/jama.1986.03380020075015","pdf_url":null,"source":{"id":"https://openalex.org/S172573765","display_name":"JAMA","issn_l":"0002-9955","issn":["0002-9955","0098-7484","1538-3598","2376-8118"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","doyens","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320259","host_organization_name":"American Medical Association","host_organization_lineage":["https://openalex.org/P4310320259"],"host_organization_lineage_names":["American Medical Association"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JAMA: The Journal of the American Medical Association","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","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/A5113009546","display_name":"W. Douglas B. Hiller","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":true,"raw_author_name":"W. Douglas B. Hiller","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":0,"institutions_distinct_count":0,"corresponding_author_ids":["https://openalex.org/A5113009546"],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":1.706,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.82014388,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"256","issue":"2","first_page":"213","last_page":"213"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11967","display_name":"Electrolyte and hormonal disorders","score":0.9247999787330627,"subfield":{"id":"https://openalex.org/subfields/2727","display_name":"Nephrology"},"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/T11967","display_name":"Electrolyte and hormonal disorders","score":0.9247999787330627,"subfield":{"id":"https://openalex.org/subfields/2727","display_name":"Nephrology"},"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/T11109","display_name":"Thermoregulation and physiological responses","score":0.06759999692440033,"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/T11922","display_name":"Cardiovascular Effects of Exercise","score":0.0013000000035390258,"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"}}],"keywords":[{"id":"https://openalex.org/keywords/hyponatremia","display_name":"hyponatremia","score":1.0},{"id":"https://openalex.org/keywords/ultramarathon","display_name":"ultramarathon","score":0.8999999761581421},{"id":"https://openalex.org/keywords/fluid-overload","display_name":"fluid overload","score":0.8159999847412109},{"id":"https://openalex.org/keywords/ironman-triathlon","display_name":"Ironman triathlon","score":0.7089999914169312},{"id":"https://openalex.org/keywords/triathlon","display_name":"triathlon","score":0.5120000243186951},{"id":"https://openalex.org/keywords/fluid-intake","display_name":"fluid intake","score":0.39399999380111694},{"id":"https://openalex.org/keywords/electrolyte-imbalance","display_name":"electrolyte imbalance","score":0.5040000081062317}],"concepts":[{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.8713948726654053},{"id":"https://openalex.org/C2776703092","wikidata":"https://www.wikidata.org/wiki/Q824292","display_name":"Hyponatremia","level":2,"score":0.8367874622344971},{"id":"https://openalex.org/C2781054738","wikidata":"https://www.wikidata.org/wiki/Q4813730","display_name":"Athletes","level":2,"score":0.6753023862838745},{"id":"https://openalex.org/C2775884009","wikidata":"https://www.wikidata.org/wiki/Q1344963","display_name":"World championship","level":2,"score":0.42299315333366394},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.24070802330970764},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.15217983722686768},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0546913743019104},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0}],"mesh":[{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D007010","descriptor_name":"Hyponatremia","qualifier_ui":"Q000209","qualifier_name":"etiology","is_major_topic":true},{"descriptor_ui":"D009320","descriptor_name":"Atrial Natriuretic Factor","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D010807","descriptor_name":"Physical Endurance","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D012420","descriptor_name":"Running","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.1001/jama.1986.03380020075015","doi":"https://doi.org/10.1001/jama.1986.03380020075015","is_oa":false,"landing_page_url":"https://doi.org/10.1001/jama.1986.03380020075015","pdf_url":null,"source":{"id":"https://openalex.org/S172573765","display_name":"JAMA","issn_l":"0002-9955","issn":["0002-9955","0098-7484","1538-3598","2376-8118"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-a","doyens","jufo-3","ki-jl-3","medline","norway-2","poland-200","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320259","host_organization_name":"American Medical Association","host_organization_lineage":["https://openalex.org/P4310320259"],"host_organization_lineage_names":["American Medical Association"],"type":"journal"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JAMA: The Journal of the American Medical Association","raw_type":"journal-article"},{"id":"pmid:2941598","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/2941598","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":"JAMA","raw_type":"Letter"}],"best_oa_location":null,"sustainable_development_goals":[{"score":0.9391000270843506,"id":"https://metadata.un.org/sdg/3","display_name":"Good health and well-being"}],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":4,"referenced_works":["https://openalex.org/W2042060249","https://openalex.org/W2043417483","https://openalex.org/W2163392508","https://openalex.org/W2921097806"],"related_works":["https://openalex.org/W2083511558","https://openalex.org/W2036245113","https://openalex.org/W172028366","https://openalex.org/W1971731848","https://openalex.org/W2163392508","https://openalex.org/W1972628075","https://openalex.org/W2192163790","https://openalex.org/W2313002491","https://openalex.org/W2020770000","https://openalex.org/W2117904111"],"abstract_inverted_index":{"To":[0],"the":[1,8,14,25,28,52,69,84,89,96,126,139],"Editor.\u2014":[2],"We":[3,19],"read":[4],"with":[5,24,78],"great":[6],"interest":[7],"article":[9,86,90],"by":[10,91,102,135],"Frizzell":[11,85,104],"et":[12,93,105,109,141],"al1in":[13],"Feb":[15],"14":[16],"issue":[17],"ofJAMA.":[18],"are":[20],"certainly":[21],"in":[22,33,36,57,66,83,88,121,138],"agreement":[23],"authors":[26,97],"concerning":[27],"serious":[29],"nature":[30],"of":[31,68,123,129],"hyponatremia":[32,38,65],"ultraendurance":[34],"athletes":[35,114],"whom":[37],"is":[39,125],"a":[40],"real":[41],"and":[42,87,107],"potentially":[43],"life-threatening":[44],"problem.":[45],"In":[46],"our":[47],"prospective":[48],"study2in":[49],"1984":[50],"at":[51],"Ironman":[53],"Triathlon":[54],"World":[55],"Championship":[56],"Hawaii,":[58],"we":[59,73],"were":[60,115],"very":[61],"surprised":[62],"to":[63,76],"find":[64],"29%":[67],"study":[70],"subjects.":[71],"However,":[72],"would":[74],"like":[75],"differ":[77],"one":[79,130],"major":[80],"point":[81],"made":[82],"Noakes":[92,108,140],"al3to":[94],"which":[95],"refer.":[98],"It":[99],"was":[100],"postulated":[101],"both":[103],"al":[106,110,142],"that":[111],"these":[112],"hyponatremic":[113],"overhydrated.":[116],"The":[117],"only":[118],"direct":[119],"evidence":[120],"support":[122],"this":[124],"weight":[127],"gain":[128,134],"athlete":[131],"(a":[132],"4.5-kg":[133],"case":[136],"4":[137]},"counts_by_year":[],"updated_date":"2026-11-04T10:54:05.112534","created_date":"2016-06-24T00:00:00"}