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More teams use science

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This offseason, the Packers hired Catapult Sports, an Australian-based company that uses GPS technology to compile live data on athletic exertion and help determine how injuries can be prevented. Nearly a month into training camp, and the Packers, who have been crushed by injuries in recent years, had just seven players who sat out of practice on Monday. Only one of them, defensive tackle Letroy Guion, had a muscle pull.