People with PAD have clogged leg arteries that cause them severe pain when they walk. Currently, a treadmill test is the standard of determining maximal walking distance, but it's not always accurate.
A new study in the journal Circulation finds GPS allows for the analysis of the distanced walked but also the speed, duration of resting, and the number of walking bouts over a prolonged recording period.
However, experts say, GPS can't entirely replace treadmills because treadmills record multiple measurements such as blood pressure and heart rate.
