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From Fellrnr.com, Running tips
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These notes are for those with an interest in the underlying details.
* There are multiple formulas for calculating water vapor pressure which produce slightly different results.
* The calculation of skin temperature is not straightforward. The calculator uses Neilson's simplistic approach for 0 Celsius to 15 Celsius, then rather than the Mehnert for above 15 Celsiusformula.
* The maximum running pace is calculated using a goal seek algorithm.
* The various formulas for calculating the surface area of the skin appear to give similar results.
=References=
This calculator is based on [http://www.ncbi.nlm.nih.gov/pubmed/8784753 Olympics in Atlanta: a fight against physics] and [http://www.ncbi.nlm.nih.gov/pubmed/10048634 Advantages of a smaller bodymass in humans when distance-running in warm, humid conditions]
=See Also=
* [[Running in the Heat]]
