Estimate activity for M-health using one three-axis accelerometer

Recently, a person who has a risk or patient of metabolic syndrome or diabetes or life-style related diseases are increasing. So, walking has gotten a lot of attention as a prevention method. Pedometer is often used in walking. Recently, pedometer calculates energy expenditure from number of steps and their weight. But, there is not pedometer which calculated energy expenditure from consider the walking involved with slope. So in this study, we use only one three-axis acceleration sensor. And we proposed the estimate activity algorithm to analysis of data from sensor. For evaluation experiment 50 data were collected from 10 healthy subjects. As a result, a good result of no less than 95% was obtained in "stop", "walk", "upstairs", and "downstairs".