The GHSA previously had a policy that every school was required to monitor the environment, but there was no guideline as to the type of device used to measure weather conditions, the length of practice duration or the number of practice sessions.
UGA heat study helps GHSA set new preseason guidelines
On Monday, Georgia became the latest among a handful of states to adopt preseason heat acclimatization guidelines for secondary school athletics after hearing the results and recommendations from a three-year UGA College of Education study of exertional heat illness rates of athletes at 25 high schools across Georgia.
Michael Childs | March 20th, 2012 | Published in Features, KINS
High school student-athletes need about 10-14 days to acclimate their bodies to the heat stress in preseason practices in late July and August each year and gradual acclimatization to these conditions can help minimize the risk of exertional heat illnesses, according to a three-year study by University of Georgia researchers.
Ferrara
Cooper
Heat-related deaths among football players across the country tripled to nearly three per year between 1994 and 2009 after averaging about one per year the previous 15 years, according to a related UGA study by climatologist Andrew Grundstein, an associate professor of geography. Overall, Georgia led the nation in deaths with seven fatalities. Tragically, two more Georgia high school athletes died last August.
“Our previous research shows heat illness rates are highest in the Southeast,” said Michael Ferrara, professor of kinesiology and associate dean for research in UGA’s College of Education who co-directed the study with Bud Cooper, associate head of the department of kinesiology.
“Heat stoke is a preventable death with proper acclimatization of the athlete, recognition of the condition, and immediate and rapid cooling when a heat stroke is suspected,” said Ferrara.
On Monday, Georgia became the latest state to adopt preseason heat acclimatization guidelines for secondary school athletics. In just the past year, Connecticut, New Jersey, Texas and North Carolina have followed this trend.
Three years ago, the Georgia High School Association decided to develop guidelines to protect the health and safety of their athletes but they wanted the facts first. They partnered with the Georgia Athletic Trainers’ Association, the National Federation of State High School Associations Foundation and the National Athletic Trainers’ Association Research & Education Foundation to fund the UGA study that looked at the rate of EHI in 25 high schools throughout the state.
The UGA researchers used the Wet Bulb Globe Temperature which is a measure of air temperature, humidity and radiant temperature.
“The NFL and NCAA already have instituted preseason guidelines for acclimatization and the policy changes have been well accepted by coaches and athletes alike,” said Ferrara.
UGA head athletic trainer Ron Courson said after the Bulldogs started using preseason guidelines for acclimatization that “the overall injury rate went down because the athletes were not as tired and worn down during the preseason period. We actually had improved performance of our athletes.”
The results of the UGA study were presented at the NATA Annual Meeting in June 2011 and to the GHSA football subcommittee in January 2012. The 50-member executive committee of the GHSA voted Monday to adopt the recommendations of the NATA-led Inter-Association Task Force on Preseason Heat-Acclimatization Guidelines for Secondary School Athletics.
The new guidelines require that the first week of practice consist of single-practice days with sessions no longer than two hours with helmets. During the second week, teams can start two-a-day practices but they cannot have consecutive double-session days: a double-practice day must now be followed by a single-practice day. There has to be at least three hours of rest between sessions on a double-practice day and double-day sessions cannot exceed five hours of practice time.
The GHSA previously had a policy that every school was required to monitor the environment, but there was no guideline as to the type of device used to measure weather conditions, the length of practice duration or the number of practice sessions. In addition there were no guidelines dictating these items as they relate to acclimatization or heat stress.
“We wanted to develop a policy that would be practical and allow student athletes exposure to the environmental conditions but be as safe as possible,” said Ralph Swearngin, Executive Director of the GHSA. “We are confident that we are taking the right steps and passing the right measures to provide the best care for our young athletes.”
The UGA researchers used the Wet Bulb Globe Temperature (WBGT) which is a measure of air temperature, humidity and radiant temperature. The scale is broken into categories on how to modify activity. Results showed that there is an increase in the number of exertional heat injuries when the WBGT reaches about 82 degrees. The researchers modified the scale to include an increase in rest breaks, hydration periods and duration of practice.
The radiant temperature is the major difference between WBGT and the National Weather Service measurement known as the heat index. The radiant heat has a direct effect on “heat load” on the athlete. The heat index does not take this variable into account, said Cooper..
“We wanted to provide flexibility to schools and coaches in designing their practice but be as safe as possible,” said Ferrara. “No injury is 100 percent preventable, but using our evidence, we feel we have developed reasonable guidelines for the student-athlete.”
Michael Childs is director of public information for the UGA College of Education.