Heat Stress Safety: The Science Behind the WBGT Regional Guidelines

Heat stress is a very real and potentially deadly occurrence that can happen to athletes of any competition level. Since many athletes train and perform in a variety of environmental conditions, Wet Bulb Globe Temperature (WBGT) Regional Guidelines were developed to help improve heat stress safety. What is WBGT? First, let's discuss the concept behind Wet Bulb Global Temperature. This is the measurement of heat stress in direct sunlight. This measurement takes the following into account for its calculation: Humidity Temperature Wind Speed Sun Angle Cloud cover It's no secret that different regions of the US experience varying types of...

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Heat Stress: What is Wet Bulb Globe Temperature?

There are many ways to measure the weather around us. When it comes to measuring heat stress, wet bulb globe temperature (WBGT) takes temperature, humidity, wind speed, sun angle, and cloud cover into account. WBGT differs from heat index. Heat index considers temperature and humidity and it’s calculated for shady areas. Why Use Wet Bulb Globe Temperature? Organizations such as the military and OSHA use WBGT to help manage workload in direct sunlight. This is also an important measurement for those who are doing exercise in hot conditions. When using WBGT, it can be used as a guideline for safety...

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Compass Error in Kestrel 4500 and 4600 Units

We've been receiving reports that the Kestrel 4500 and 4600 models are having an issue recording compass direction when the unit powers off. The issue started with firmware version 4.83 and has appeared in several updates since. We have resolved this issue with firmware version 4.89. If you have a Kestrel meter with firmware version 4.76 or higher and would like to upgrade your firmware to the latest version, please contact techsupport@nkhome.com to discuss your options. Please note: Kestrel meters with firmware lower than 4.76 cannot be upgraded further due to their internal board, but should not be experiencing the...

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Heat Wave Affecting HIgh School Sports

“The Burlington Free Press just posted a good article addressing heat stress and high school  sports.  With the recent heat wave, schools need to carefully monitor their student athletes.  Read the full article here

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