Design of bio-signal based physical activity monitoring system

Conventional physical activity systems with 3-D accelerometer or global positioning system (GPS) can effectively quantize energy expenditure for aerobic exercise. However, they are limited for aerobic exercise monitoring. To overcome this limitation, we developed EMG based portable physical activity monitoring system. Proposed system extract unique features of motion based exercise and muscular motion based exercise from measured bio-signal. Experimental results showed it can clearly classify the aerobic exercise, isotonic resistance exercise, and hybrid types of exercise. Through this system, more complex types of physical activity can be recognized accurately.