1. Monitoring Physical Activities Using Smartphones
Pablo Romo1, Sergio F. Ochoa1, Nelson Baloian1, José Bravo2 1 Computer Science Department, University of Chile 2 Castilla-La Mancha University Ciudad Real, Spain

2. Agenda Motivation Problem to Address Proposed Solution
Proposal Evaluation
Conclusions
Future Work

3. Motivation Sedentary people
In Chile 70% of the people does no exercises regularly
People is not aware of this condition.
Third age
Many have to perform daily exercises by medical prescription.
Problems: lack of perseverance, commitment or external support.

4. Problem to Address Sedentary way of life Third age awareness.
Existing monitoring tools often unusable for the elderly people.
External support is not easy to implement.

5. Proposed Solution
AMOPA - Application for Monitoring Physical Activity.
Smartphone Android as monitoring device for physical activity.
Web service for remote monitoring the activity data obtained.

6. Proposed Solution Android app Web Aplication Improves Motivation
Physical activity monitoring system
Android
app
Improves
Motivation
Personal use
Monitoring in Background
Web
Aplication
Simplifies
External support
Remote Monitoring

7. AMOPA – Software Architecture

8. Strategies for Data Gathering
Pedometer:
Based on accelerometer.
Allows calories consumption estimation.
Requires using the phone on a belt in order to improve counting precision.
Physical Activity Intensity:
Based on the accelerometer.
Compares and classifies the intensity of the physical activity performed with pre-defined values (null, low, medium, high) .
Based on performing physical activity for 30 minutes daily, each activity session should last at least for 10 minutes to be considered.

9. Monitoring System: interfaces
User registration
Using mode
2 modes:
Personal monitoring mode.
Monitoring for external use of data

10. Monitoring System User registration Daily log Data for one day:
Mean velocity.
Number of steps.

11. Remote Monitoring
Web Application

12. Proposal Evaluation Pedometer Precision
Comparing AMOPA with third party applications

13. Total Energy Consumption
Proposal Evaluation
Intensity
Consumed energy
Test
Accuracy
Test 1
97%
Test 2
94%
Test 3
99%
Experiment
Accelerometer
AMOPA
Total Energy Consumption
Test 1 8% 4%
12%
Test 2 6% 5%
11%
Test 3 2%
7% 

14. Conclusions
We developed a system that monitors the physical activity, which was conceived mainly for elderly.
It implements remote synchronous (or asynchronous) monitoring.
Precision of data obtained allows for acceptable estimations of the physical activity of the users.

15. Future Work
Improving the precision of the algorithm that detects the physical activity.
Integrating other physical activities like jogging, bicycle, etc.
Integration with social networks.
Improving application’s interfaces.