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10 Feb 2004

enviromental temperature and humidity limits
Please could you supply the temperature and humidity limits for endurance exercises and school athletics
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Expert
FitnessDoc
fitnessdoc

01 Jan 0001

I have the guidelines suggested by the American College of Sports Medicine, which in the field of sports science is generally regarded as the eminent authority on these things. This is a graph which shows the interaction between temperature and humidity and then categorizes the risk associated. I hope that I am able to put this graph into words.

If the relative humidity is 20%, then:
A temperature above 35 degrees is considered very high risk
a temperature between 30 and 35 is high risk
a temperature between 25 and 30 is moderate risk
a temperature below 25 is low risk

If the humidity is 60%
a temperature above 30 is very high risk
a temperature above 25 is high risk
a temperature above 20 is moderate risk
a temperature below 20 is low risk

If the humidity is above 70%
a temperature above 25 is very high risk
a temperature between 20 and 25 is high risk
a temperature between 15 and 20 is moderate risk
a temperature below 15 is low risk

Now, these guidelines are only guidelines, and in this country, we really don't stick to them. For example, a humidity of 60% is not unusual, and temperatures above 25 are pretty much everyday occurrences in summer, and so what is considered high risk is just another day to us. Therefore, some discretion is always a good idea. There may be other tables and guidelines that you might be able to find, but this is the general idea.

Hope this helps
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