North Carolina High School Athletic Association
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From NFHS | Heat Acclimatization / Heat Illness and Air Quality

Indianapolis, Indiana – As we head into the fall 2025 preseason, particularly with the extreme heat we are seeing across the country, you are reminded everyone that it is critical to alert your member schools that this is the peak time of the year for risk of heat-related illnesses and deaths! A commitment to advanced planning and preparation are essential for ensuring the implementation of best practice prevention and management approaches that reduce the risk of death and disability.

Repeated alerts are appropriate over the next few months as temperatures may fluctuate. Just before a predicted “heat wave,” coaches and school administrators are best reminded through emails and social media of the importance of activity and practice modifications. In addition, remember that this is not just a football issue. Any student participating in an outdoor sport or activity in the heat is vulnerable to heat illness, including participants in activities such as marching band, cheer and those players practicing in hot gyms without air conditioning.

With increased use of Wet Bulb Globe Temperature (WBGT) devices, it is important that state associations continue to educate their member schools on new policies and procedures they have put in place on heat acclimatization and heat illness. See NFHS Foundation video on use of the WBGT at https://nfhslearn.com/library/videos/wet-bulb-globe-thermometer- educational-video

In addition to issues related to heat, Air Quality continues to be a problem in many areas of the country. During times of suspected high air pollution, the Air Quality Index (AQI) should be checked prior to all practices and contests. A particular location’s AQI can be found at https://www.airnow.gov

School administrators, athletic directors, coaches, parents and students should also be made aware of the following resources from the NFHS and the NFHS Sports Medicine Advisory Committee (SMAC):

NFHS “Heat Acclimatization and Heat Illness Prevention Position Statement”
https://www.nfhs.org/media/5919613/nfhs-heat-acclimatization-april-2022-final.pdf
NFHS “Position Statement and Recommendations for Maintaining Hydration to Optimize Performance and Minimize the Risk for Exertional Heat Illness”
https://www.nfhs.org/media/5919614/nfhs-hydration-position-statement-april-2022-final.pdf
NFHS “Heat Illness Prevention” Online Course from NFHSLearn.com
https://nfhslearn.com/courses/heat-illness-prevention-2
NFHS “The Collapsed Student” Online Course from NFHSLearn.com
https://nfhslearn.com/courses/the-collapsed-athlete
NFHS “Sudden Cardiac Arrest” Online Course from NFHSLearn.com
https://nfhslearn.com/courses/sudden-cardiac-arrest
NFHS “Emergency Action Plan (EAP) for Interscholastic Activities Position Statement”
https://assets.nfhs.org/umbraco/media/7213372/nfhs-smac-emergency-action-plans-eap-position-statement-final-10-7-24.pdf
NFHS “Emergency Action Planning for Afterschool Programs” Online Course from NFHSLearn.com
https://nfhslearn.com/courses/emergency-action-planning-for-afterschool-programs
NFHS “CPR and AED Training” Online Course from NFHSLearn.com
https://nfhslearn.com/courses/cpr-aed
NFHS “Position Statement on Physical Activity, Air Quality and Wildfires
https://www.nfhs.org/media/7212236/nfhs-position-statement-on-air-quality-april-2023-final.pdf

Other resources are available on the following link to the NFHS Sports Medicine web page, including those from the National Athletic Trainers’ Association and the Korey Stringer Institute: https://nfhs.org/resources/sports-medicine

It is crucial that the heat acclimatizing guidelines are strictly followed as published by the state association, with extra vigilance during the first 3-4 days of any transition or acclimatization period. This is the time when our students are most vulnerable to the heat. Although prevention is our goal, it is vital for personnel to be able to rapidly identify, assess, and appropriately treat exertional heat stroke.

Remember, cool first and transport second.