Above: The Nike Fuelband is the subject of a UK softball players study on how well it measures expended effort.
Left: Fitbit is a popular fitness gadget; on some treadmills it offers an interface so users can customize their workouts.
Above: The Nike Fuelband is the subject of a UK softball players study on how well it measures expended effort. Left: Fitbit is a popular fitness gadget; on some treadmills it offers an interface so users can customize their workouts.
Above: The Nike Fuelband is the subject of a UK softball players study on how well it measures expended effort. Left: Fitbit is a popular fitness gadget; on some treadmills it offers an interface so users can customize their workouts.

When measuring your heart rate during exercise, a gadget isn't always necessary

February 26, 2013 12:00 AM

UPDATED February 26, 2013 08:58 AM

More Videos

  • Majority of football players had CTE shows study of donated brains

    A recent study looked at the donated brains of former football players including professional, semi-professional, collegiate, and high school athletes. Researchers found a change in the brains of former NFL players, known as chronic traumatic encephalopathy or CTE. CTE is a progressive degenerative disease of the brain. Researchers found that of the 202 brains studied, nearly 88 percent of them had CTE. The results were more pronounced among former NFL players.