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    Partial heat acclimation of athletes with spinal cord lesion

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    Authors
    Castle, Paul C.
    Kularatne, B. Pasan
    Brewer, John
    Mauger, Alexis R.
    Austen, Ross A.
    Tuttle, James A.
    Sculthorpe, Nicholas
    Mackenzie, Richard W.
    Maxwell, Neil S.
    Webborn, Anthony D. J.
    Issue Date
    2012
    
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    Abstract
    Heat acclimation (HA) can improve thermoregulatory stability in able-bodied athletes in part by an enhanced sweat response. Athletes with spinal cord lesion are unable to sweat below the lesion and it is unknown if they can HA. Five paralympic shooting athletes with spinal cord lesion completed seven consecutive days HA in hot conditions (33.4 ± 0.6 °C, 64.8 ± 3.7 %rh). Each HA session consisted of 20 min arm crank exercise at 50 % [Formula: see text] followed by 40 min rest, or simulated shooting. Aural temperature (T (aur)) was recorded throughout. Body mass was assessed before and after each session and a sweat collection swab was fixed to T12 of the spine. Fingertip whole blood was sampled at rest on days 1 and 7 for estimation of the change in plasma volume. Resting T (aur) declined from 36.3 ± 0.2 °C on day 1 to 36.0 ± 0.2 °C by day 6 (P < 0.05). During the HA sessions mean, T (aur) declined from 37.2 ± 0.2 °C on day 1, to 36.7 ± 0.3 °C on day 7 (P < 0.05). Plasma volume increased from day 1 by 1.5 ± 0.6 % on day 7 (P < 0.05). No sweat secretion was detected or changes in body mass observed from any participant. Repeated hyperthermia combined with limited evaporative heat loss was sufficient to increase plasma volume, probably by alterations in fluid regulatory hormones. In conclusion, we found that although no sweat response was observed, athletes with spinal cord lesion could partially HA.
    Citation
    Castle, P. C., Kularatne, B. P., Brewer, J., Mauger, A. R., Austen, R. A., Tuttle, J. A., Sculthorpe, N., Mackenzie, R. W., Maxwell, N. S. and Webborn, A. D. J. (2012) 'Partial heat acclimation of athletes with spinal cord lesion', European Journal of Applied Physiology, 113(1) pp.109-115
    Publisher
    Springer
    Journal
    European Journal of Applied Physiology
    URI
    http://hdl.handle.net/10547/279357
    DOI
    10.1007/s00421-012-2417-6
    Additional Links
    http://link.springer.com/10.1007/s00421-012-2417-6
    Type
    Article
    Language
    en
    ISSN
    1439-6319
    1439-6327
    ae974a485f413a2113503eed53cd6c53
    10.1007/s00421-012-2417-6
    Scopus Count
    Collections
    Applied Sport and Exercise Physiology

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