iPhone as a physical activity measurement platform

摘要: iPhone is emerging as a ubiquitous physical activity measurement platform due to its incorporated accelerometer sensor. The iPhone's capacity accurately measure has not been put scrutiny up now, despite claims from an increasing number of applications. This study examines ways perform accurate measurements with the iPhone, at various positions on user's body. focuses walking and running - two most prevalent aerobic activities. For walking, methodology developed that translates values peripheral body locations equivalent readings waist there metabolic units. running, limitation documented. formulas results in this paper can readily be used by developers increase accuracy fitness applications improve user experience.