Abstract: The present invention discloses a method for determining a training status selected from a set of training status alternatives at a current time. Determine an overall training load in a duration before the current time. Determine a first term representing a positive effect on a training performance based on the overall training load and a second term representing a negative effect on the training performance based on the overall training load. Determine a third term representing the training performance based on the first term and the second term. Generate at least one feature based on at least one of the first term, the second term and the third term. Determine one of the set of training status alternatives based on the at least one feature by a classifying model describing the set of training status alternatives are associated with the at least one features.

Abstract: The present invention discloses a method for monitoring an exercise. Acquire a relationship between a degree of active participation of an organism of a human body and an exercise intensity. Build up an energy metabolism system and build up a mathematical model describing that an energy expenditure depends on the exercise intensity and the degree of active participation of the organism of the human body for the energy metabolism system. Determine the degree of active participation of the organism based on the exercise intensity measured in the exercise by the relationship. Use the exercise intensity and the degree of active participation of the organism to estimate the energy expenditure by the mathematical model of the energy metabolism system. Monitor the exercise based on the energy expenditure.