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NHL and Concussions – What can be done?

Brad Marchand illegal hit on Sami Salo (Photo by Brian Babineau/NHLI via Getty Images)

The first half of the National Hockey League (NHL) season has been riddled with concussions. Players are being increasingly concussed from legal/illegal hits to the body and head.  Just recently, Nathan Horton of the Boston Bruins suffered a concussion, making him the 72nd player this season to suffer one. Based on an average roster size of twenty-three NHL players per team, one in every ten players have already missed games. More than 850 games have been lost as of Sunday due to a concussion.

You may ask why the sudden increase in concussions? Before the lock-out period (2004-2005), concussions were rarely diagnosed and have just recently come to the attention of the league. Players were never examined for concussion symptoms. The increase in concussions also has a lot to do with how the game is played today. In the new era of the NHL, players are bigger and stronger, and wear lighter equipment allowing for a faster paced game.  Thus, the games are getting quicker and quicker every year.  The velocity at which players hit each other is higher and there are far to many blindside hits and elbows to the head. All of these things are contributing to the rise of concussion related injuries.

What is a Concussion?

Concussion (mild traumatic brain injury) is a brain injury sustained by a blow to the head resulting in traumatic forces being applied to the brain. Upon impact the brain moves violently, suffering structural and internal damage.

Common Symptoms:

  • Headache
  • Disoriented
  • Vomiting, Nausea
  • Difficult Balancing
  • Blurred/Double Vision

        Animation of an impact to the head.  YouTube Preview Image

Each athlete has a different threshold for their susceptibility to concussions. Usually concussion symptoms go away without any treatment. The key to preventing concussion symptoms is to be fully recovered before you hit the ice again. The second time around will be worse and will result in a longer recovery period.

What can be done to prevent concussions?

NHL has recently taken precautionary measurements by introducing a new concussion protocol, making it mandatory for players to be medically examined if they suffer an impact to the head. A concussed player will be immediately removed from the game until they are symptom free.  Handing out hefty suspensions to illegal hits to the head are steps in the right direction to discourage hits to the head, but more still needs to be done. The league needs to change the equipment they are using. Helmets alone are not sufficient enough to protect players from concussions. Elbow and shoulder pads should be softened to reduce their effect on players. Also the league should introduce new equipment such as the concussion collar by Dr. Joseph Fisher which could reduce the severity of a hits to the head.

A concussion collar worn by Henrik Tallinder that could help prevent concussions (Photo by Bill Wipper/NHLI via Getty Images)

All of the above safety measures could set the players and the league on a safer course. I feel players are largely responsible for their actions, they need to be more aware of their surroundings. They have less respect for their own safety thinking they are bullet proof.

 

References:

 

Weather Bug

Have you ever gone camping while the chirping sound of crickets lulled you to sleep? Not only do these small invertebrates produce a pleasant sound on a warm summer evening, but they also have the ability to act as natural thermometers. The species Oecanthus fultoni has an amazing thermometric ability.

When the male cricket rubs one wing against the other, he produces the chirping sound. The frequency of this sound is directly proportional to temperature where the cricket is located.

Every day folk can calculate the outside temperature in degrees Fahrenheit simply by counting the number of chirps in 14 seconds, and adding 40.

The University of California has a more sophisticated formula for those that wish to calculate the temperature more precisely. “Count the chirps per minute, subtract 40, divide by 4, add 50 and that will be the temperature in degrees Fahrenheit.” Yet another study defines the equation as the number of chirps in 15 seconds, added to 37.”

So why are there all these variations? One possible reason is that the actual function is not supposed to be linear.

 

Figure 1: Linear fit of the number of chirps per 13s versus outside temperature.

 

Figure 2: Exponential fit of the number of chirps per 13s versus outside temperature.

 

A group of scientists in the early in the 20th century gathered the data points on these graphs. They prove that the equation for determining the temperature from a cricket chirp is not linear. All the variations in the proposed equations are therefore only due to the differences in the best line fit of the actual curve.

The equation for the line in figure 2 is:

Chirps per 13 seconds = 5.63 x 1010 exp[–(6290 K) / T ]

This equation does have a couple of setbacks to it. First of all, it may scare the general public. Apart from this, the real question is who would actually care to memorize it? Even more so, what percentage of the population would bring with them calculators to a campsite?

While it may be a quick and easy way to determine the outside temperature, the simple linear equations are only useful for campers who do not need a precise measurement.

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https://www.youtube.com/watch?v=oiD9SbeaDEs&feature=fvst