{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T14:21:50Z","timestamp":1767709310728,"version":"3.48.0"},"reference-count":42,"publisher":"Wiley","license":[{"start":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T00:00:00Z","timestamp":1767657600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["physoc.onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Experimental Physiology"],"abstract":"Abstract<\/jats:title>\n \n The aim of this work was to assess the effect of heat exposure on cardiorespiratory and haematological responses during de\u2010training and re\u2010training. Nineteen men (33.8\u00a0\u00b1\u00a02.7\u00a0years; 182\u00a0\u00b1\u00a05.7\u00a0cm, 84.4\u00a0\u00b1\u00a09.3\u00a0kg) completed 4 weeks of pre\u2010training followed by heat exposure (HEAT;\n n\u00a0<\/jats:italic>\n =\u00a09) or control (CON;\n n<\/jats:italic>\n \u00a0=\u00a010). Both groups then de\u2010trained for 2 weeks with lower\u2010limb immobilization followed by 2 weeks of re\u2010training. Cardiorespiratory fitness and total haemoglobin mass (Hb\n mass<\/jats:sub>\n ) were measured at baseline (BASE), prior to (IMMO\n pre<\/jats:sub>\n ) and following (IMMO\n post<\/jats:sub>\n ) immobilization and after a \u2018return\u2010to\u2010sport\u2019 (RTS\n post<\/jats:sub>\n ) training phase. Compared with IMMO\n pre<\/jats:sub>\n , at the gas exchange threshold (GET) was reduced (\n d\u00a0<\/jats:italic>\n =\u00a0\u22120.53;\n P\u00a0<\/jats:italic>\n <\u00a00.005) at IMMO\n post<\/jats:sub>\n , whereas maximal oxygen uptake () did not change significantly (\n d\u00a0<\/jats:italic>\n =\u00a00.14;\n P<\/jats:italic>\n \u00a0=\u00a00.07). The reduction in GET was more pronounced for HEAT than CON (\n d\u00a0<\/jats:italic>\n =\u00a0\u22120.77;\n P<\/jats:italic>\n \u00a0=\u00a00.001). At IMMO\n post<\/jats:sub>\n , GET and peak power output were lower than IMMO\n pre<\/jats:sub>\n (\n d\u00a0<\/jats:italic>\n =\u00a0\u22121.4,\n P\u00a0<\/jats:italic>\n <\u00a00.005 and\n d\u00a0<\/jats:italic>\n =\u00a00.43,\n P\u00a0<\/jats:italic>\n =\u00a00.01, respectively), however there was no difference between groups. At RTS\n post<\/jats:sub>\n , the at GET increased again in both groups yet remained lower than IMMO\n pre<\/jats:sub>\n although the reduction in HEAT (\n d\u00a0<\/jats:italic>\n =\u00a0\u22120.42;\n P<\/jats:italic>\n \u00a0=\u00a00.43) was less than CON (\n d\u00a0<\/jats:italic>\n =\u00a0\u22120.8;\n P\u00a0<\/jats:italic>\n =\u00a00.05). At RTS\n post<\/jats:sub>\n , HEAT fully recovered GET power losses compared to IMMO\n post<\/jats:sub>\n (\n d\u00a0<\/jats:italic>\n =\u00a01.1;\n P\u00a0<\/jats:italic>\n =\u00a00.001), while CON only showed a trivial change (\n d\u00a0<\/jats:italic>\n =\u00a00.07;\n P\u00a0<\/jats:italic>\n =\u00a00.1). No significant changes were observed in Hb\n mass<\/jats:sub>\n , haematocrit or plasma volume throughout the study (\n P<\/jats:italic>\n \u2265 0.763). Heat exposure did not attenuate a decline in cardiorespiratory fitness during immobilization\u2010induced de\u2010training, but could potentiate its recovery upon re\u2010commencement of training.\n <\/jats:p>","DOI":"10.1113\/ep092931","type":"journal-article","created":{"date-parts":[[2026,1,6]],"date-time":"2026-01-06T14:16:06Z","timestamp":1767708966000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["Impact of heat exposure during immobilization\u2010induced de\u2010training and re\u2010training\u00a0on aerobic capacity and haemoglobin mass"],"prefix":"10.1113","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-4669-6595","authenticated-orcid":false,"given":"Scott","family":"Cocking","sequence":"first","affiliation":[{"name":"Department of Sports Science Aspire Academy Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-2328-4638","authenticated-orcid":false,"given":"Nathan","family":"Townsend","sequence":"additional","affiliation":[{"name":"College of Health and Life Sciences Hamad Bin Khalifa University Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Mariem","family":"Labidi","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"},{"name":"Faculty of Sport Sciences and Physical Education CETAPS, University of Rouen Rouen France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-7522-6125","authenticated-orcid":false,"given":"Khouloud","family":"Mtibaa","sequence":"additional","affiliation":[{"name":"College of Health and Life Sciences Hamad Bin Khalifa University Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Marine","family":"Alhammoud","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nada","family":"Nasir","sequence":"additional","affiliation":[{"name":"College of Health and Life Sciences Hamad Bin Khalifa University Doha Qatar"},{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Nelda","family":"Nader","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Karim","family":"Khalladi","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Claire","family":"Tourny","sequence":"additional","affiliation":[{"name":"Faculty of Sport Sciences and Physical Education CETAPS, University of Rouen Rouen France"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Abdulaziz","family":"Farooq","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0348-4744","authenticated-orcid":false,"given":"Sebastien","family":"Racinais","sequence":"additional","affiliation":[{"name":"Aspetar, Orthopaedic and Sports Medicine Hospital Doha Qatar"},{"name":"Environnemental stress unit CREPS Montpellier \u2013 Font Romeu Montpellier France"},{"name":"DMEM, Univ Montpellier, INRAE Montpellier France"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"311","published-online":{"date-parts":[[2026,1,6]]},"reference":[{"issue":"7","key":"e_1_2_8_2_1","doi-asserted-by":"crossref","first-page":"596","DOI":"10.1136\/bjsm.2010.076364","article-title":"Return to sport following anterior cruciate ligament reconstruction surgery: A systematic review and meta\u2010analysis of the state of play","volume":"45","author":"Ardern C. 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