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A pedometer, or step-counter, is a device, usually portable and electronic or electromechanical, that counts each step a person takes by detecting the motion of the person's hands or hips.
Fitness trackers are a more sophisticated version of the pedometer; in addition to counting steps, they contain additional sensors such as accelerometers and altimeters to collect or estimate measures including the speed and distance travelled, heart rate, calorie expenditure, or the duration and quality of sleep. [2]
An accelerometer measures proper acceleration, which is the acceleration it experiences relative to freefall and is the acceleration felt by people and objects. [2] Put another way, at any point in spacetime the equivalence principle guarantees the existence of a local inertial frame, and an accelerometer measures the acceleration relative to that frame. [4]
Participants wore an accelerometer on their hip for a minimum of 10 hours per day for at least 4 days. An accelerometer is basically a fancy pedometer that tracks most kinds of movement, not just ...
With the increased sensor offering in smartphones, built-in accelerometers can be used as a pedometer and built-in magnetometer as a compass heading provider. Pedestrian dead reckoning ( PDR ) can be used to supplement other navigation methods in a similar way to automotive navigation, or to extend navigation into areas where other navigation ...
(Accelerometers, unlike pedometers, track many kinds of physical activity—not just a number of steps.) These participants had an average age of 62 years, and just over half of them were women.
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