Badger football players are taking a breath test — but it has nothing to do with checking for alcohol consumption.

Instead, it is meant to find out if the athletes are getting an effective workout, says Isomark, the Madison startup that developed the technology.

Isomark says its Energy Balance device gives trainers quick information about how an athlete is metabolizing food.

Badger football players are using the technology in a pilot program this fall. They breathe into a special bag at the start of a practice, twice during a workout and twice afterward, said Daniel Butz, Isomark chief scientific officer.

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