Patent ID: 8095208

Claim:
A system for determining an effective training heart rate zone, the system comprising: a training module adapted to determine a target training heart rate (TTHR) zone based on a maximum heart rate of a user, the maximum heart rate being determined based on at least one parameter stored in the training module; at least one sensor for measuring a core temperature (T c ) of the user during training; at least one sensor for measuring a heart rate of the user during training; a compensation module, which is arranged for compensating the target training heart rate (TTHR) zone based on an increase in a measurement of the core temperature (Tc), from the at least one sensor for measuring the core temperature, with respect to an average body temperature (Tb) at rest to determine an effective training heart rate (ETHR) zone, wherein the ETHR zone is composed of the TTHR zone having upper and lower range values increased by a temperature compensation value (C) for a current value of the core temperature exceeding the average body temperature, wherein: C=P×(Tc−Tb) and wherein P is a personal compensation value representing an amount of extra heartbeats per minute of a user at rest per degree unit temperature difference between the current value of the core temperature and the average body temperature; and an indicating module adapted to compare the heart rate of the user to the effective training heart rate zone based on information from the compensation module and to inform the user when the heart rate exceeds or drops under a range specified by the effective training heart rate zone.