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390 Can a heat-and-...
390 Can a heat-and-moisture exchanger attenuate inflammatory responses to exercise in sub-zero conditions?
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- Hanstock, Helen, 1989- (författare)
- Mittuniversitetet,Institutionen för hälsovetenskap,Swedish Winter Sports Research Centre
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- Tutt, Alasdair S (författare)
- Mittuniversitetet,Institutionen för hälsovetenskap,Swedish Winter Sports Research Centre
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- Persson, Hampus (författare)
- Umeå University
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- Andersson, Erik, 1984- (författare)
- Mittuniversitetet,Institutionen för hälsovetenskap,Swedish Winter Sports Research Centre
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- Ainegren, Mats, 1963- (författare)
- Mittuniversitetet,Institutionen för kvalitets- och maskinteknik,Sports Tech Research Centre
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- Stenfors, Nikolai (författare)
- Umeå University
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(creator_code:org_t)
- 2021
- 2021
- Engelska.
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Ingår i: British Journal of Sports Medicine. ; 55:Suppl 1
- Relaterad länk:
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https://doi.org/10.1...
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http://bjsm.bmj.com/...
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Background Heavy endurance training in sub-zero environments increases risk of exercise-induced asthma. Heat-and-moisture exchangers (HME) can prevent exercise-induced bronchoconstriction but it is not known whether they protect against inflammatory responses to exercise in healthy individuals.Objective To investigate whether use of an HME during exercise in a sub-zero environment affects post-exercise inflammatory responses.Design Investigator-blind randomised crossover trial.Setting Environmental chamber at -15°C.Participants 23 healthy, trained participants aged 18–53 (15 male, 8 female, VO2peak 57±6 and 50±4 mL/kg/min; mean±SD).Interventions Two experimental trials with and without HME, consisting of 30-min moderate-intensity running followed by a 4-min maximal running time-trial. Plasma samples were obtained pre- and 1h-post-exercise and analysed for a panel of 10 cytokines using a multiplex immunoassay.Main Outcome Measurements Plasma cytokine concentrations (GM-CSF, IL-1β, IL-4, IL-5, IL-6, IL-8, IL-10, IL-13, IL-17E/25, TNF-α). Data were log-transformed then analysed using two-way repeated-measures ANOVA; one participant was an extreme outlier and excluded.Results Five cytokines (GM-CSF, IL-1β, IL-4, IL-13, IL-17E/25) returned <20% concentrations within detection limits and were excluded from further analysis. The other cytokines returned >85% samples in range. IL-6, IL-8 and IL-10 increased after exercise (IL-6: F=36, p≤0.0001; IL-8: F=39, p≤0.0001; IL-10: F(1,21)=8.9, p=0.0072). There was a trend towards a greater post-exercise increase in IL-10 with HME (HME: median 0.062 (range -0.203–1.053) pg/mL; no-HME: 0.047 (-0.079–0.50) pg/mL; F=3.0, p=0.096). There were no significant interactions for other cytokines.Conclusions Use of an HME during exercise in a sub-zero environment did not affect systemic pro- and anti-inflammatory cytokine responses to exercise. Local inflammatory markers in the lungs may be relevant to investigate in future studies.
Ämnesord
- MEDICIN OCH HÄLSOVETENSKAP -- Hälsovetenskap -- Idrottsvetenskap (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Health Sciences -- Sport and Fitness Sciences (hsv//eng)
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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