{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,5,9]],"date-time":"2026-05-09T19:26:30Z","timestamp":1778354790680,"version":"3.51.4"},"reference-count":56,"publisher":"Ovid Technologies (Wolters Kluwer Health)","issue":"10","content-domain":{"domain":["www.ahajournals.org"],"crossmark-restriction":true},"short-container-title":["JAHA"],"published-print":{"date-parts":[[2017,10,11]]},"abstract":"<jats:sec xml:lang=\"en\">\n            <jats:title>Background<\/jats:title>\n            <jats:p xml:lang=\"en\">\n              In contrast to the effects of preterm birth, the extent to which shorter gestational age affects the cardiorespiratory fitness (\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              ) levels of individuals who were born at term (ie, between 37 and 42\u00a0weeks) is largely unknown. The aim of this study was to examine whether life\u2010course\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              levels varied across different gestational ages within the at\u2010term range.\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Methods and Results<\/jats:title>\n            <jats:p xml:lang=\"en\">\n              The association between gestational age (in weeks) obtained from Child Health Services records and\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              , estimated from field and laboratory tests and expressed by maximal oxygen uptake level through adolescence to young adulthood, was examined in 791 participants in the Northern Ireland Young Hearts Study, all singletons born at term. Longitudinal data were analyzed with generalized estimating equations, accounting for important potential confounders. Mean levels of\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              were 45.6, 43.7, and 33.0\u00a0mL\/kg per minute when participants were aged 12, 15, and 22\u00a0years, respectively. After adjustment for confounders, each week increase in gestational age was associated with 0.46\u00a0mL\/kg per minute (95%\n              <jats:styled-content style=\"fixed-case\">confidence interval<\/jats:styled-content>\n              , 0.14\u20130.79) in\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              . Compared with individuals born full term (39\u201340\u00a0weeks, n=533) or late term (41\u201342\u00a0weeks, n=148), those who were born early term (37\u201338\u00a0weeks, n=110) had a higher incidence of poor\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              (risk ratio, 1.57; 95%\n              <jats:styled-content style=\"fixed-case\">confidence interval<\/jats:styled-content>\n              , 1.14\u20132.16). The changes in\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              through adolescence to young adulthood were similar across groups, with those born early term consistently displaying the lowest CRF.\n            <\/jats:p>\n          <\/jats:sec>\n          <jats:sec xml:lang=\"en\">\n            <jats:title>Conclusions<\/jats:title>\n            <jats:p xml:lang=\"en\">\n              These findings suggest that early\u2010term births within the at\u2010term range are linked to poorer\n              <jats:styled-content style=\"fixed-case\">CRF<\/jats:styled-content>\n              through adolescence to young adulthood, and may have important clinical and public health implications for policies about (avoidable) early\u2010term deliveries given their recent increasing trends.\n            <\/jats:p>\n          <\/jats:sec>","DOI":"10.1161\/jaha.117.006467","type":"journal-article","created":{"date-parts":[[2017,9,28]],"date-time":"2017-09-28T01:10:28Z","timestamp":1506561028000},"update-policy":"https:\/\/doi.org\/10.1161\/crossmarkpolicy","source":"Crossref","is-referenced-by-count":19,"title":["Gestational Age and Cardiorespiratory Fitness in Individuals Born At Term: A Life Course Study"],"prefix":"10.1161","volume":"6","author":[{"given":"Isabel","family":"Ferreira","sequence":"first","affiliation":[{"name":"School of Public Health, The University of Queensland, Herston, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pei T.","family":"Gbatu","sequence":"additional","affiliation":[{"name":"School of Public Health, The University of Queensland, Herston, Queensland, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Colin A.","family":"Boreham","sequence":"additional","affiliation":[{"name":"Institute for Sport and Health, University College Dublin, Dublin, Ireland"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"276","reference":[{"key":"e_1_3_4_2_2","doi-asserted-by":"publisher","DOI":"10.1016\/S0140-6736(12)60820-4"},{"key":"e_1_3_4_3_2","doi-asserted-by":"publisher","DOI":"10.1097\/AOG.0b013e3182179e28"},{"key":"e_1_3_4_4_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0056238"},{"key":"e_1_3_4_5_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0113758"},{"key":"e_1_3_4_6_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.ajog.2012.07.022"},{"key":"e_1_3_4_7_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2011-2157"},{"key":"e_1_3_4_8_2","doi-asserted-by":"publisher","DOI":"10.1542\/peds.2012-3215"},{"key":"e_1_3_4_9_2","doi-asserted-by":"publisher","DOI":"10.1111\/ppe.12274"},{"key":"e_1_3_4_10_2","doi-asserted-by":"publisher","DOI":"10.1093\/ije\/dyq070"},{"key":"e_1_3_4_11_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0115229"},{"key":"e_1_3_4_12_2","doi-asserted-by":"publisher","DOI":"10.1136\/bmj.e896"},{"key":"e_1_3_4_13_2","doi-asserted-by":"publisher","DOI":"10.1016\/j.jpeds.2008.09.013"},{"key":"e_1_3_4_14_2","doi-asserted-by":"publisher","DOI":"10.1097\/EDE.0b013e318280da0f"},{"key":"e_1_3_4_15_2","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0144754"},{"key":"e_1_3_4_16_2","first-page":"239","volume-title":"Oxford Textbook of Children's Sport and Exercise Medicine","author":"Ferreira I","year":"2017","unstructured":"Ferreira I, Twisk JW. 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