Heat-Related Deaths for High School Athletes Increase as Temperatures Rise

Union of Concerned Scientists
Last year, several high school football players died from exhaustive heat stress, a trend that is, unfortunately, increasing over time. Since 2006, at least 20 high school football players have died from exertional heat stroke according to the University of North Carolina’s National Center for Catastrophic Sport Injury Research.
At a press conference last year convened by the Union of Concerned Scientists, researchers concluded that a combination of increased extreme heat due to climate change and rising childhood obesity can prove lethal for high school football players. Both extreme heat and high humidity can put players at risk.
Fortunately, public health experts note that every exertional heat stroke death is preventable and national and state high school athletic associations have taken notice. Since last year, many have adopted new guidelines or policies aimed at protecting players from higher temperatures.
Football Riskier than Other Sports
The Centers for Disease Control (CDC) published a study in August 2010 that concluded heat illness is the leading cause of death and disability among American high school athletes. The CDC estimated that heat stress is responsible for an average of more than 9,000 heat illnesses among high school athletes annually and that football players are 10 times more likely to experience heat illness than students who played the eight other surveyed sports.
According to a recent international climate change study, risks increase when exposure, vulnerability and extreme weather and climate events combine. In the case of high school football, exposure can increase when athletes participate in two-a-day practices at the beginning of the practice season, typically during the first week of August. Vulnerability is higher for more obese players and players who have not exercised over the summer. And climate change has made extreme heat more likely to occur, especially during the summer months.
Heat Waves Are Becoming More Common Due to Climate Change
Scientists expect heat waves such as the ones experienced last year and this year to become more frequent, intense and longer as heat-trapping gases from burning coal and gas and destroying tropical forests accumulate in the atmosphere. Overall, over the last decade, the U.S. has set twice as many record highs as record lows.
According to a U.S.federal scientific assessment, the average temperature in the U.S. has increased 2 degrees Fahrenheit over the past 50 years, while over the past 30 to 40 years, high-humidity heat waves have also increased. The assessment projected that staying on a business-as-usual path with regard to heat-trapping emissions would make extreme heat events that occurred just once every 20 years in the past happen every other year or annually throughout the country by the end of the century.
National and State Organizations Are Working to Better Protect Players
National and state organizations have responded to last year’s string of player deaths by adopting new positions and guidelines on heat acclimatization for high school athletes.
The National Federation of State High School Associations (NFHS) released a new position statement this April. The statement emphasizes beginning training progressively, instituting rest breaks, reducing the amount of equipment athletes wear to avoid stifling in the heat, reducing practice intensity and duration as heat and humidity increase, and having well-defined and practiced emergency response plans in place, including on-site rapid cooling.
In October 2011, Texas’ University Interscholastic League, in which high schools participate, voted to bar two-a-day practices until after a four-day acclimation period. And in March, the Georgia High School Association adopted new policies that require schools to take wet bulb globe temperatures to determine how intense practice should be, a method pioneered by the Marine Corps at Camp Lejeune.
Other states, including Arkansas, Connecticut, New Jersey and North Carolina, have also adopted protective policies over the past few years.
The Korey Stringer Institute (KSI) at the University of Connecticut works directly with states to improve their heat acclimatization policies. KSI maintains a list of state policies and rates them against its recommendations, which include limiting two-a-day practices as the preseason begins.
Visit EcoWatch's CLIMATE CHANGE page for more related news on this topic.
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<p>Think of it as a game of Jenga and the planet's climate system as the tower. For generations, we have been slowly removing blocks. But at some point, we will remove a pivotal block, such as the collapse of one of the major global ocean circulation systems, for example the Atlantic Meridional Overturning Circulation (AMOC), that will cause all or part of the global climate system to fall into a planetary emergency.</p><p>But worse still, it could cause runaway damage: Where the tipping points form a domino-like cascade, where breaching one triggers breaches of others, creating an unstoppable shift to a radically and swiftly changing climate.</p><p>One of the most concerning tipping points is mass methane release. Methane can be found in deep freeze storage within permafrost and at the bottom of the deepest oceans in the form of methane hydrates. But rising sea and air temperatures are beginning to thaw these stores of methane.</p><p>This would release a powerful greenhouse gas into the atmosphere, 30-times more potent than carbon dioxide as a global warming agent. This would drastically increase temperatures and rush us towards the breach of other tipping points.</p><p>This could include the acceleration of ice thaw on all three of the globe's large, land-based ice sheets – Greenland, West Antarctica and the Wilkes Basin in East Antarctica. The potential collapse of the West Antarctic ice sheet is seen as a key tipping point, as its loss could eventually <a href="https://science.sciencemag.org/content/324/5929/901" target="_blank">raise global sea levels by 3.3 meters</a> with important regional variations.</p><p>More than that, we would be on the irreversible path to full land-ice melt, causing sea levels to rise by up to 30 meters, roughly at the rate of two meters per century, or maybe faster. Just look at the raised beaches around the world, at the last high stand of global sea level, at the end of the Pleistocene period around 120,0000 years ago, to see the evidence of such a warm world, which was just 2°C warmer than the present day.</p>Cutting Off Circulation
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