Well lets just say a person going from sea level to 6,000 feet will find themselves more winded at altitude doing the same work load. The mask restricts the air flow requiring the athlete to take deeper breaths. This trains the core muscles involved. Swimmers have done this for years using snorkels. Some even have clips on the top that you can close the tube to restrict air flow more. http://www.stack.com/2009/02/01/holding-your-breath-with-texas-am-swimming/
The training effect is to condition the core muscles that you use to pull air into your lungs. At altitude you will take more breaths to get the same amount of 02 to the blood stream. It does nothing to simulate altitude training. That is a marketing ploy.
I coached swimming for 30 years and have worked with US National teams in Colorado Springs before. This looks like something that restricts air flow not unlike snorkles in swimming. The physiological benifit of resrticted air flow comes by working the muscles used to inhale. Sort of like weight lifting for your lungs.
At least we didn't get burned like the Bears. Love this play. Gunners rarely pick up the flight of the ball and go wherever the returner goes. http://www.seahawks.com/video/2015/09/29/anatomy-play-seahawks-trick-play-punt-return-vs-bears
Sorry PntherPryd I meant to quote thebigcat Seeing it live at the game my first thought was a flop like basketball players do to draw charging calls. Looking at the video it looked more like the defender tripped over Cam trying to get out of his way. It was far from flagrant.
You might have a point except for the fact that Cam has gotten more QB roughing calls since coming into the league than any other QB during the same time period. He has 30. Next closest is Matt Ryan with like 23. Read those numbers in a Black and Blue Review tweet yesterday.
Rivera mentioned that punt return on his radio interview on Sitius XM today. Blamed the return on the punter kicking it too far. Said the returner had 13 yards to make the first guy miss. Maybe they are looking for someone who is better at controlling the ball with less leg strength.
He also mentioned that you are pretty much allowed to double the gunners and there are no holding calls on them. A 40 yard high kick with a fair catch might be better than a 60 yard boomer with our coverage history the past few years.