Document Detail

The acute effect of cold air exercise in determination of exercise-induced bronchospasm in apparently healthy athletes.
MedLine Citation:
PMID:  20634735     Owner:  NLM     Status:  MEDLINE    
The primary objective of this study was to assess the acute effects for both cold and warm air running on pulmonary function testing and the diagnosis of exercise-induced bronchospasm (EIB). Subjects (n = 12, 8 men, 4 women) were distance runners (25.91 +/- 4.91 milesxwk) with mean age 30.2 +/- 5.1 years, mean height 179.0 +/- 11.5 cm, and mean weight 77.1 +/- 15.7 kg. Subjects first performed a maximal oxygen test on a motor-driven treadmill to assess Vo2max and maximal heart rate (MHR). On 2 subsequent days and within a 1-week time period, subjects ran 8 minutes in random order either on an outside 478.2-m course or on the treadmill at 6% grade. Speed was adjusted under both conditions to elicit 85-95% of MHR achieved on the Vo2max test. All tests were conducted in the month of January to maximize the potential for a cold climate. Pulmonary function test was performed immediately prerun, immediately postrun, and at 5, 10, 18, and 30 minutes postrun. There was no significant difference in any of the pulmonary function tests over time for cold vs. warm running (p > 0.05). Also, the pattern of change over time for the pulmonary function variables was not significantly different by condition (p > 0.05). Although group comparisons were not significant over time and for any variable between the 2 conditions, 7 of our subjects (58.3%) at some point postexercise exhibited a change that would be considered a positive response and diagnostic of EIB. Cold running produced significantly more positive responses (75%) than warm running (25%) (p = 0.001). It is concluded that healthy individuals need not be concerned about the acute effects of cold air exercise on the lungs. Also, physicians need to be vigilant in prescribing medications and should use strict, objective criteria when doing so.
Daniel G Carey; Katelyn A Aase; German J Pliego
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Publication Detail:
Type:  Journal Article; Randomized Controlled Trial    
Journal Detail:
Title:  Journal of strength and conditioning research / National Strength & Conditioning Association     Volume:  24     ISSN:  1533-4287     ISO Abbreviation:  J Strength Cond Res     Publication Date:  2010 Aug 
Date Detail:
Created Date:  2010-08-04     Completed Date:  2010-11-12     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9415084     Medline TA:  J Strength Cond Res     Country:  United States    
Other Details:
Languages:  eng     Pagination:  2172-8     Citation Subset:  IM    
Health and Human Performance, University of St Thomas, St Paul, Minnesota, USA.
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MeSH Terms
Asthma, Exercise-Induced / etiology*,  physiopathology
Cold Temperature / adverse effects*
Exercise / physiology*
Exercise Test
Forced Expiratory Volume / physiology
Heart Rate / physiology
Oxygen Consumption / physiology
Peak Expiratory Flow Rate / physiology
Running / physiology
Vital Capacity / physiology

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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