{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2025,5,14]],"date-time":"2025-05-14T08:13:03Z","timestamp":1747210383020,"version":"3.40.5"},"reference-count":0,"publisher":"FEUP","content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":[],"abstract":"<jats:p>Introduction:  In  Portugal,  during  COVID19pandemic,  sport  and  fitness  facilities  were  closed.  When lockdown has been lifted, in order to prevent the spread of infection, indoor sport facilities were subject to specific regulations that limited indoor occupancy as well as manner of air ventilation. This study aims to analyze  the  impacts  of  these  ventilation  restrictions  on  indoor  air  comfort  parameters  in  sport  fitness facilities.  Methodology:  Temperature  (T;  \u00baC),  relative  humidity  (RH;  %),  and  carbon  dioxide  (CO2)  were continuously monitored (41 days; spring and autumn) in four fitness centers situated in Oporto metropolitan area: two of them under normal ventilation conditions (i.e. before lockdown; NV1 and NV2) and two of them under temporary restrictions for indoor ventilations and occupancy (RV1 and RV2). Results and Discussion: Under normal ventilation conditions, T in fitness centers slightly varied (in NV1:22-25 \u00baC; NV2: 20-23 \u00baC) but in both clubs the comfort recommendations (18-25 \u00baC) were fulfilled. On contrary, RH were below guideline values (55-75%) in NV1 (47-54%) whereas at NV2 (66-73%) it fulfilled the recommendations. When specific health regulations took place, mean T ranges were similar in both clubs (RV1: 21-23 \u00baC; RV2:21-23 \u00baC) but they  both  exceeded  recommended  comfort  levels  (16-21  \u00baC).  Mean  RH  were  in  accordance  with  the legislative values, but the very high temporal maxima (up to 75 and 89%) indicate the possible discomforts the that exercisers might have experienced.  Concerning the CO2, the obtained results showed that indoorlevels  decreased  when  specific  health  restrictions  were  in  force  (11-121%)  most  likely  due  imposed guidelines  for  human  occupancy.  Conclusions:  The  restrictions  for  ventilation  and  human  occupancy positively  impacted  indoor  levels  of  CO2.  However,  T  and  RH  were  on  several  occasions  outside  the recommended   comfort   levels,   especially   during   group   activity   classes.   As   regular   exercising   in environmental  conditions,  such  as  elevated  T  and  increased  RH  can  cause  health  discomforts,  these parameters  should  be  carefully  maintained  within  the  recommended  ranges  even  under  restricted ventilation scenarios.<\/jats:p>","DOI":"10.24840\/978-972-752-279-8_0037-0042","type":"proceedings-article","created":{"date-parts":[[2021,8,31]],"date-time":"2021-08-31T16:31:34Z","timestamp":1630427494000},"page":"37-42","source":"Crossref","is-referenced-by-count":0,"title":["The comfort parameters in indoor air of sports facilities with different ventilation regimes"],"prefix":"10.24840","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-2957-7458","authenticated-orcid":false,"given":"C\u00e1tia","family":"Peixoto","sequence":"first","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5265-4186","authenticated-orcid":false,"given":"Klara","family":"Slezakova","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8505-3432","authenticated-orcid":false,"given":"Maria do Carmo","family":"Pereira","sequence":"additional","affiliation":[]},{"ORCID":"https:\/\/orcid.org\/0000-0001-6433-5801","authenticated-orcid":false,"given":"Simone","family":"Morais","sequence":"additional","affiliation":[]}],"member":"10468","published-online":{"date-parts":[[2021,6,28]]},"event":{"name":"4th Symposium on Occupational Safety and Health"},"container-title":["4th Symposium on Occupational Safety and Health Proceedings Book"],"original-title":[],"deposited":{"date-parts":[[2021,8,31]],"date-time":"2021-08-31T16:31:41Z","timestamp":1630427501000},"score":1,"resource":{"primary":{"URL":"https:\/\/books.fe.up.pt\/index.php\/feup\/catalog\/view\/978-972-752-279-8\/978-972-752-279-8_0037-0042\/266"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2021,6,28]]},"references-count":0,"URL":"https:\/\/doi.org\/10.24840\/978-972-752-279-8_0037-0042","relation":{},"subject":[],"published":{"date-parts":[[2021,6,28]]}}}