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By DAVE SKRETTA
The little black device is the brains of the StatSports system, which combined with a heart rate monitor gives the Chiefs the ability to track everything Smith does during every minute he's on the field. How much he runs, how much of that is sprinting, even the force of impact if one of his teammates forgets he's wearing a yellow jersey and lays a hit on him.
— High-speed running,Wholesale Jerseys, or how much ground is covered when a player is running flat out, a more accurate barometer of effort than total distance.
It was only natural, Moffett said, that the company would expand to other sports. Rugby clubs soon came onboard, and the system was adapted for use in basketball, with the Washington Wizards and Chicago Bulls among NBA teams giving it a shot.
The information it provides during practices could be worth millions.
ST. JOSEPH, Mo. (AP) — In a story Aug. 20 about professional sports teams using GPS devices to track player performance, The Associated Press reported, based on information provided by StatSports,Cheap Wholesale Jerseys, that the New York Knicks were using the technology. The Knicks are not clients of StatSports.
"We have a lot of Premier League clubs using the system, from Manchester United to Arsenal," said Richard Moffett, the director of the company's U.S. operations. "In fact, both clubs in the Champions League final, Barcelona and Juventus,Cheap Jerseys China, are using our system."
In other words, far more than its weight in gold.
— Total distance, though that number can be somewhat misleading. Players jogging onto the field and off is not as useful as the distance covered during live action.
— Step balance, which determines how much force a player applies to each foot, and can be used to determine whether a player is dealing with an injury.
"It's nothing magical," he said, "but we hope it gives us an advantage."
NFL teams going high-tech in practice with GPS systems
"It's kind of crazy," Smith said, "everything that it can do."
In turn, that could push teams to the right side of the thin line that separates winning and losing — whether a team makes the playoffs or begins preparing for the draft.
— Accelerations and decelerations, including peak rates, duration and distance covered.
ST. JOSEPH, Mo. (AP) — The pod situated between Alex Smith's shoulder blades is about the size of a deck of cards, so small that the Chiefs quarterback barely notices it when he slips off his pads.
AP Sports Writer
— Dynamic stress load, the total force of weighted impacts that a player experiences during a practice, a more useful metric than running for offensive and defensive linemen.
"The system is totally scalable, and it can be as simple or as complicated as you need," Moffett explained. "The training staff might want every bit of information, but Andy Reid might be overwhelmed by that. He might want a more simplified report."
The company itself is Irish, with roots in an entirely different version of football. The GPS-based system was designed in part for soccer clubs, where tracking how much players run over the course of a practice or game can allow coaches to maximize their workouts.
Chiefs,China Jerseys Authentic, Bengals, Panthers experimenting with Irish company to better monitor practices
"We had 60 units last year, so we had it during the season, but this year we upped it to 90 so we have everybody in camp," said Brett Nenaber, the Panthers' athletic performance analyst.  "We're starting to get more confident in the things that we are learning from it, and it's another way to help take care of these guys."
"This year we have it a lot more dialed in," Nenaber said. "We're learning as we go. They come twice a year and sit down with me. The technology is always changing as well. Sometimes it will have a new system to upload where we can do new stuff. They might have a new unit coming out, so it's something that keeps progressing, and we are learning more and more from it."

A corrected version of the story is below:
Indeed, the Chiefs coach has quickly become enamored of the system.
Depending on the version of the system, the GPS unit is accurate to about 20 centimeters. And the computer software used to analyze all of the data is constantly being tweaked, especially as StatSports begins to better understand the needs of NFL teams.
— Heart rate,Cheap NFL Jerseys, including max, average and the time a player spends at threshold.
So exactly what information can the system provide? Among other things:
— Speeds achieved, such as the maximum a wide receiver runs in yards per second.
"It's a good tool, a good piece of the puzzle," said Chiefs trainer Barry Rubin, who along with his assistant, Brent Salazar,Cheap NFL Jerseys China, has outfitted about 30 players with the tracking device.
In a league with few secrets, and seemingly fewer ways to get a leg up on the competition, the Chiefs are among a trio of teams — the Panthers and Bengals are the others — giving the high-tech system a chance. The idea is that by practicing smarter, and recovering better, they will give their players the best chance to succeed in games.
Did they exert more energy than usual? Dial back the intensity the next day, giving them a chance to recover. Did they loaf a bit? Crank up the intensity.
More recently, StatSports made its move into the NFL.
"He wants to know what's going on," Rubin said. "If there needs to be a change to practice, he'll change. We haven't had to do that much, but it is helpful to have the data available."