Effects of two short-term, intermittent hypoxic training protocols on the finger temperature response to local cold stress
2015 (English)In: High Altitude Medicine & Biology, ISSN 1527-0297, E-ISSN 1557-8682, Vol. 16, no 3, 251-260 p.Article in journal (Refereed) Published
Keramidas, Michail E., Stylianos N. Kounalakis, Ola Eiken, and Igor B. Mekjavic. Effects of two short-Term, intermittent hypoxic training protocols on the finger temperature response to local cold stress. High Alt Med Biol 16:251-260, 2015.-The study examined the effects of two short-Term, intermittent hypoxic training protocols, namely exercising in hypoxia and living in normoxia (LL-TH; n=8), and exercising in normoxia preceded by a series of brief intermittent hypoxic exposures at rest (IHE+NOR; n=8), on the finger temperature response during a sea-level local cold test. In addition, a normoxic group was assigned as a control group (NOR; n=8). All groups trained on a cycle-ergometer 1h/day, 5 days/week for 4 weeks at 50% of peak power output. Pre, post, and 11 days after the last training session, subjects immersed their right hand for 30min in 8°C water. In the NOR group, the average finger temperature was higher in the post (+2.1°C) and 11-day after (+2.6°C) tests than in the pre-Test (p≤0.001). Conversely, the fingers were significantly colder immediately after both hypoxic protocols (LL-TH:-1.1°C, IHE+NOR:-1.8°C; p=0.01). The temperature responses returned to the pre-Training level 11 days after the hypoxic interventions. Ergo, present findings suggest that short-Term intermittent hypoxic training impairs sea-level local cold tolerance; yet, the hypoxic-induced adverse responses seem to be reversible within a period of 11 days.
Place, publisher, year, edition, pages
2015. Vol. 16, no 3, 251-260 p.
IdentifiersURN: urn:nbn:se:kth:diva-169636DOI: 10.1089/ham.2015.0013ISI: 000360662800028ScopusID: 2-s2.0-84940932801OAI: oai:DiVA.org:kth-169636DiVA: diva2:823795
Updated from accepted to published.
QC 201510082015-06-182015-06-182015-10-08Bibliographically approved