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Related Experiment Videos

Pulmonary function in normal subjects following exercise at cold ambient temperatures.

K R Chapman1, L J Allen, T T Romet

  • 1Asthma Centre, Toronto Hospital, Ontario, Canada.

European Journal of Applied Physiology and Occupational Physiology
|January 1, 1990
PubMed
Summary

Cold weather exercise does not significantly impact lung function in healthy individuals. Pulmonary function tests, including forced vital capacity (FVC) and residual volume (RV), showed similar changes after exercise in both cold and temperate conditions.

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Area of Science:

  • Exercise Physiology
  • Environmental Medicine
  • Pulmonary Function Testing

Background:

  • Cold ambient temperatures can affect physiological responses during exercise.
  • Understanding the impact of cold on respiratory function is crucial for athletes and individuals exercising outdoors.

Purpose of the Study:

  • To investigate the effects of cold ambient temperatures on pulmonary function following treadmill exercise.
  • To compare changes in lung volumes and expiratory flow rates after exercise in cold versus temperate conditions.

Main Methods:

  • 12 healthy volunteers underwent 30-min treadmill exercise at -11°C and 20°C.
  • Pulmonary function was measured before and at 5-min intervals for 30 min post-exercise.
  • Key parameters included forced vital capacity (FVC), residual volume (RV), and various expiratory flow rates.

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Main Results:

  • Post-exercise FVC showed a transient, similar decrease in both conditions.
  • RV significantly increased post-exercise, with a slightly greater increase in the cold.
  • No significant differences were observed in forced expired volume in 1 second (FEV1) or maximum mid-expiratory flow rate between conditions.

Conclusions:

  • Moderate exercise in cold conditions does not lead to clinically significant decreases in expiratory flow rates in non-asthmatic individuals.
  • Changes in lung volumes following exercise are comparable between cold and temperate environments.
  • Cold exposure during exercise does not appear to adversely affect pulmonary function in healthy adults.