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DC Field | Value | Language |
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dc.contributor.author | Travers, G | - |
dc.contributor.author | Nichols, D | - |
dc.contributor.author | Riding, N | - |
dc.contributor.author | González-Alonso, J | - |
dc.contributor.author | Périard, JD | - |
dc.date.accessioned | 2020-03-03T11:48:35Z | - |
dc.date.available | 2020-03-03T11:48:35Z | - |
dc.date.issued | 2020-02-26 | - |
dc.identifier | ORCID iD: José González-Alonso https://orcid.org/0000-0002-8205-3311 | - |
dc.identifier.citation | Travers, G. et al. (2020) 'Heat Acclimation with Controlled Heart Rate: Influence of Hydration Status', Medicine & Science in Sports & Exercise, 52 (8), pp. 1815 -1824. doi: 10.1249/mss.0000000000002320. | en_US |
dc.identifier.issn | 0195-9131 | - |
dc.identifier.uri | https://bura.brunel.ac.uk/handle/2438/20442 | - |
dc.description.abstract | Purpose To characterize the adaptive responses to heat acclimation (HA) with controlled heart rate (HR) and determine whether hydration strategy alters adaptations. The influence of HA on V[Combining Dot Above]O2max in cool conditions and self-paced exercise in the heat was also determined. Methods Eight males (V[Combining Dot Above]O2max: 55±7 ml.kg-1.min-1) completed two 10-day interventions in a counterbalanced cross-over design. Fluid intakes differed between interventions to either maintain euhydration (HA-EUH) or elicit similar daily body mass deficits (2.85±0.26%; HA-DEH). HA consisted of 90 min of cycling in 40°C and 40% RH. Initial workload (172±22 W) was adjusted over the last 75 min to maintain exercising HR equivalent to 65% V[Combining Dot Above]O2max. A V[Combining Dot Above]O2max test in cool conditions and 30 min time-trial in hot-humid conditions were completed before and after HA. Results HR at the end of the initial 15 min workload was 10±5 beats.min-1 lower on day 10 in both interventions (P<0.001). The workload necessary to maintain exercising HR (145±7 beats.min-1) increased throughout HA-EUH (25±10 W, P=0.001) and HA-DEH (16±18 W, P=0.02). There was a main effect of HA on sweat rate (P=0.014), which tended to increase with HA-EUH (0.19±0.18 L.h-1, P=0.06) but not HA-DEH (P=0.12). Skin temperature decreased during HA-EUH (0.6 ± 0.5°C, P=0.03), but not HA-DEH (P=0.30). There was a main effect of HA on V[Combining Dot Above]O2max (~3 ml.kg-1.min-1, P=0.02); however, neither intervention independently increased V[Combining Dot Above]O2max (both P=0.08). Time-trial performance increased following HA-EUH (19±16 W, P=0.02), but not HA-DEH (P=0.21). Conclusions Controlled HR exercise in the heat induces several HA adaptations, which may be optimized by maintaining euhydration. HA-EUH also improves self-paced exercise performance in the heat. However, HA does not appear to significantly increase V[Combining Dot Above]O2max in cool conditions. | en_US |
dc.description.sponsorship | This study was funded by Aspetar Orthopaedic and Sports Medicine Hospital, Doha, Qatar. | en_US |
dc.format.extent | 1815 -1824 | - |
dc.format.medium | Print-Electronic | - |
dc.language | English | - |
dc.language.iso | en | en_US |
dc.publisher | Wolters Kluwer Health | en_US |
dc.rights | Copyright © 2020 Wolters Kluwer Health. This is a pre-copyedited, author-produced version of an article accepted for publication in Medicine & Science in Sports & Exercise. The published version of record, Travers, G. et al. (2020) 'Heat Acclimation with Controlled Heart Rate: Influence of Hydration Status', Medicine & Science in Sports & Exercise, 52 (8), pp. 1815 -1824, is available online at: https://doi.org/10.1249/mss.0000000000002320 (see: https://www.wolterskluwer.com/en/solutions/lippincott-journals/lippincott-open-access/partner/institutions). | - |
dc.rights.uri | https://www.wolterskluwer.com/en/solutions/lippincott-journals/lippincott-open-access/partner/institutions | - |
dc.subject | acclimatization | en_US |
dc.subject | hypohydration | en_US |
dc.subject | dehydration | en_US |
dc.subject | thermoregulation | en_US |
dc.subject | fluid | en_US |
dc.title | Heat Acclimation with Controlled Heart Rate | en_US |
dc.type | Article | en_US |
dc.identifier.doi | https://doi.org/10.1249/mss.0000000000002320 | - |
dc.relation.isPartOf | Medicine & Science in Sports & Exercise | - |
pubs.issue | 8 | - |
pubs.publication-status | Published | - |
pubs.volume | 52 | - |
dc.identifier.eissn | 1530-0315 | - |
dc.rights.holder | Wolters Kluwer Health | - |
Appears in Collections: | Dept of Life Sciences Embargoed Research Papers |
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File | Description | Size | Format | |
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Fulltext.pdf | Copyright © 2020 Wolters Kluwer Health. This is a pre-copyedited, author-produced version of an article accepted for publication in Medicine & Science in Sports & Exercise. The published version of record, Travers, G. et al. (2020) 'Heat Acclimation with Controlled Heart Rate: Influence of Hydration Status', Medicine & Science in Sports & Exercise, 52 (8), pp. 1815 -1824, is available online at: https://doi.org/10.1249/mss.0000000000002320 (see: https://www.wolterskluwer.com/en/solutions/lippincott-journals/lippincott-open-access/partner/institutions). | 2.69 MB | Adobe PDF | View/Open |
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