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This chart shows the perceived temperature while running based on a specific height, weight and pace. This calculator is based on my [[Running Heat Model]].
=Introduction=
Normal heat indexes assume a person walking outdoors at 3 mph and generating 180 watts per square meter of skin. The original work states "higher levels of activity would increase the sensitivity to humidity… few people, however, sustain activity above the level considered here for long enough to reach a steady state". This is not very helpful to runners that are moving far quicker than 3 mph and generating a lot more heat.
* Walking temperatures assume 30% humidity.
* The entries 'Too Hot' indicate that not enough sweat will evaporate to keep your internal temperature stable.
* When the conditions are too hot, the approximate time for your core temperature to rise to a critical point is given as 'Terminal in x'. * This utility can also display sodium losses. The sweat rate shown is based on the assumption that all sweat evaporates; if sweat is dripping off you then your actual sodium losses may be far higher. For more details see [[Hydration 101]].
=Input Form=
<html>
<form style="font-family: Helvetica,Arial,sans-serif;" method="get" action="/wiki/Beta_heat_equivalent_temperaturesPerceived_Temperature_For_Runners" name="HeatEquiv">
<table style="text-align: left;" border="1"
cellpadding="1" cellspacing="1">
<option>Fine</option>
<option selected="selected">Course</option>
</select>
</td>
</tr>
</tbody>
</table>
</td>
</tr>
<tr>
<td>Sodium Losses</td>
<td>
<table style="text-align: left;" border="0" cellpadding="0" cellspacing="0">
<tbody>
<tr>
<select name="SodiumLosses">
<option selected="selected" value="None">Don't Show</option>
<option value="Adapted">Show for a heat adapted athlete</option>
<option value="Unadapted">Show for an athlete without heat adaptation</option>
</select>
</td>
This page is focused on runners, but may apply to some other sports such as soccer. It would not apply to cycling or similar sports where there is more air movement.
=See Also=
* Running calculators
** [[Running Heat Model]]
** [[Heat limited running pace]]
** [[Optimum Running Temperature]]
* [[Running in the Heat]]
* [[Heat Acclimation Training]]
* [[Impact of Heat on Marathon Performance]]