Summary
We measured pulmonary function in 12 healthy volunteers before and at 5-min intervals for 30 min following treadmill exercise of 30 min duration performed under control (20° C) and cold (−11 ° C) ambient temperatures. Post-run changes in forced vital capacity (FVC), residual volume (RV) and peak expiratory flow rate were similar between the two temperature conditions. FVC decreased slightly but significantly 5 min post-run (−0.25 ±0.201 and −0.21−0.201, for control and cold conditions respectively) and returned to baseline by 30 min. RV increased significantly post-exercise (+ 0.07 ± 0.091 and + 0.14 ± 0.11, control and cold respectively) and remained elevated for 30 min. Forced expired volume in 1 s was not significantly different following either run. Post-exercise, maximum mid-expiratory flow rate and flows at 50% and 25% of vital capacity were not significantly different between warm and cold conditions. These data suggest that changes in lung volumes following exercise under cold ambient conditions are similar to changes seen following warm exercise of similar duration. In non-asthmatics, moderate exertion under cold ambient conditions does not appear to cause clinically significant decreases in expiratory flow rates as compared to similar exertion under warm conditions.
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Chapman, K.R., Allen, L.J. & Romet, T.T. Pulmonary function in normal subjects following exercise at cold ambient temperatures. Europ. J. Appl. Physiol. 60, 228–232 (1990). https://doi.org/10.1007/BF00839164
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DOI: https://doi.org/10.1007/BF00839164