ATH 3050 Lecture Notes - Lecture 13: Nutrition, Heat Illness, Heat Cramps
Heat Illness Notes
NATA Statement: Exertional Heat Illness
• Heat illness is inherent to physical activity and its incidence increase with
rising ambient temperature and relative humidity
• Athletes who begin training in the late summer experience exertional heat
related illness more often than athletes who play during winter
• 3 categories: heat cramps, heat exhaustion, and heat stroke
• Heat Cramps- acute, painful involuntary muscle contraction caused by
dehydration
• Heat Syncope- orthostatic dizziness
• Heat Exhaustion- inability to continue exercise associated with any
combination of heavy sweating, dehydration, sodium loss, and energy
depletion
• Heat Stroke- elevated core temperature associated with sings of organ
system failure due to hyperthermia
• Exertional Hyponatremia- serum-sodium levels depleted
• ATCs must be able to differentiate between heat cramps, heat syncope, heat
exhaustion, exertional heat stroke, and exertional hyponatremia in athletes
NATA Statement: Fluid Replacement for Athletes
• If body cannot adequately evaporate sweat from the skin’s surface, core
temperature rises
• Dehydration occurs when sweat loss exceeds fluid intake during activity
• Hydration before, during, and after exercise
• Dehydration of 1% to 2% of body weight begins to influence performance
• Dehydration greater than 3% of body weight begins to compromise
physiologic function and negatively influence performance
Speaker Video
• Heat illness issues
• That is why you have to acclimate up to full pads and full contact for heat
sports
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