Besides tracking your heart rate, the HRM-Pro also evaluates your running form by delivering metrics on vertical oscillation, ground contact time, stride length, and vertical ratio.
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Best running watches built-in heart rate monitoring: Garmin Forerunner 645 Music, £399, garmin.com The Garmin Forerunner is one of the priciest options in this list for a reason.
Cleveland Clinic researchers asked 50 healthy adults to wear various heart rate monitors, including an EKG while walking or running on a treadmill. When measured against the EKG, the chest strap heart monitor showed the most accurate readings.
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