The algorithm measures the level activity of the user (that is the level of physical function of a person) and gives a score (points) between 0-100.
The points are influenced by the movement, heart rate factor, adaptation factor and the age factor (a) of the user.
Heart Rate Zone (HRZ): It is the ratio of heart rate of present time to that of maximum heart rate. Very light (50-60%) light (60-70%), moderate( 70-80%), hard (80-90%0, maximum (90-100%)
Adaptation factor: It depends on loss in muscle strength over some period of time. It is the ratio of time required to lose some specific amount of muscle strength to that of time taken by the average user to lose the same strength. For example, the system can compare the current score with the user score from a month ago.