Abstract: A system determines pedaling effort of a bicycle and includes a first detector to generate a first sensor signal responsive to passage of a force transmission chain across a first frame-fixed point located in proximity to the force transmission trajectory of the force transmission chain, a second detector for generating a second sensor signal responsive to passage of a force transmission chain across a second frame-fixed point located in proximity to the force transmission trajectory of the force transmission chain, and a controller configured to receive the first and second sensor signals and configured to determine a first pedaling parameter proportional to tension of the force transmission chain by using the first and second sensor signal. A corresponding method for determining pedaling effort of a bicycle, and a computer program distribution medium including instructions for executing a computer process in a digital processor are also disclosed.

Abstract: An electric circuitry for a portable electronic device is presented. The electric circuitry includes a first printed circuit board comprising at least one electrical component attached to and extending from a surface of the first printed circuit board. The electric circuitry further comprises a second printed circuit board arranged to be coupled with the first printed circuit board and comprising at least one recess or hole arranged to receive the at least one electrical component extending from the surface of the first printed circuit board when the first circuit board and the second printed circuit board are coupled to each other.

Abstract: A portable electronic device comprises a controller and a display. The controller receives vector data on a position of a user of the portable device from a satellite positioning sensor associated with the user, and scalar data on movement of the user from at least one motion sensor associated with the user. The controller stores data based on the vector data and feeds a scalar parameter proportional to the scalar data to the display. The display displays the scalar parameter.

Abstract: A portable apparatus, a counterpart apparatus and communication method are disclosed. The communication method comprises: communicating wirelessly an identifier from a portable apparatus to a counterpart apparatus by an induction-based magnetic field; executing a pairing protocol utilizing the identifier between the radio transceiver of the portable apparatus and a radio transceiver of the counterpart apparatus by electric radiation; and communicating information between the radio transceiver of the portable apparatus and the radio transceiver of the counterpart apparatus by electric radiation.

Abstract: An apparatus for an interval exercise performable by a person, the interval exercise including at least two training intervals, each including a work phase and a recovery phase, wherein processing a first exercise parameter data characterizing an exertion level of the interval exercise, detecting a work phase of a training interval from the first exercise parameter data, detecting a value of the first exercise parameter from the exercise parameter data at end of the work phase, and determining a threshold level of a physiological parameter, measured from the person and characterizing the person's recovery level in a recovery phase, based on the value of the first exercise parameter at the end of the work phase.

Abstract: An apparatus, a method and a computer program for the determination of sympathetic activity are disclosed. The method comprises: receiving heart activity data of a person; determining a recovery heart rate change speed during a recovery heart rate period in the heart activity data; and determining a sympathetic activity state of the sympathetic nervous system of the person based on the determined recovery heart rate change speed.

Abstract: There is provided an electronic device comprising: a processing unit configured to receive skin temperature data generated by a measuring unit, to receive performance data from a measuring unit, and to determine a theoretical fluid loss value on the basis of the received performance data. The electronic device further comprises: a processing unit configured to determine a relation between a predetermined perspiration threshold and a skin temperature value deduced from the received skin temperature data; and to determine a real fluid loss value on the basis of the theoretical fluid loss value and the determined relation between the predetermined perspiration threshold and the skin temperature value.

Abstract: There is provided electronic device, comprising: a receiving unit configured to receive heart rate data generated by a heart rate measuring system; a calculation unit configured to calculate heart rate variation data on the basis of the received heart rate data. The electronic device further comprises: a processing unit configured to analyse the calculated heart rate variation data in comparison with the corresponding heart rate data, and to determine at least one threshold value for fat burning on the basis of the analysis.

Abstract: A protective electrode structure comprises a middle protective electrode which resides between an outer protective electrode and the skin electrodes during a measurement. The middle protective electrode and the outer protective electrode are insulated from each other. Additionally, the middle protective electrode may be coupled to a virtual ground of the user-specific performance monitor system.

Abstract: There is provided an electronic device, comprising: a receiving unit configured to receive location data generated by a navigation unit of a positioning system, and to receive performance data from a measuring unit, wherein performance parameters of the performance data are associated to corresponding route points included in the received location data; and a graphic generator configured to generate graphical data associated to the received location data. The graphic generator is further configured to generate graphical data associated to the performance parameters; and to adjust the spatial dimension of the generated graphical data associated to the performance parameters in proportion to the corresponding route points of the received location data on the basis of the values of the performance parameters.

Abstract: A portable user-specific performance measuring system comprises a quality unit which receives a measurement signal and measures the quality of the measurement signal, and a presentation unit which receives from the quality unit quality data indicating the quality of the measurement signal and presents the quality of the measurement signal on the basis of the quality data.

Abstract: A method of monitoring a human relaxation level and a user-operated heart rate monitor are provided. The user-operated heart rate monitor comprises a timing instant determining means for determining a plurality of heart beat timing instants from a user's electrocardiogram; a relaxation calculating means for calculating an instantaneous relaxation measure value by using the plurality of heart beat timing instants; a relaxation reference calculating means for generating a relaxation measure reference value by using a plurality of instantaneous relaxation measure values, each calculated over a different observation period; and a displaying means configured to display a reference pointer indicating graphically the relaxation measure reference value and further configured to display a relaxation pointer indicating graphically the instantaneous relaxation measure value relative to the reference pointer.

Abstract: A data transmission method for use in the transmission of a performance transmitter of a portable user-specific performance monitor by using wireless data transmission that is based on radio-frequency electromagnetic radiation, and the method comprises measuring with the performance monitor the movement and/or organ system state of a user. In the solution, the availability of wireless data transmission in the performance transmitter is determined. If wireless data transmission is not available, measuring data is stored into a memory of the performance transmitter, otherwise the measuring data is transmitted using wireless data transmission.

Abstract: The invention relates to an electric circuit for a telemetric transmission. A semiconductor transistor switch switches a quenching circuit into an electrically conductive state to prevent oscillation of a resonance circuit. The semiconductor transistor switch switches the quenching circuit into a state preventing the passage of electric current to enable oscillation of the resonance circuit. The quenching circuit comprises at least one restriction component for preventing the passage of a base current of the semiconductor transistor switch when the semiconductor transistor switch is switched open.

Abstract: The invention relates to a portable electronic device, a method, and a computer software product. The portable electronic device comprises an active time unit (102) for determining a user activity level during a predetermined period of time; and a processing unit (106) for determining a user inactivity level during a predetermined period of time on the basis of the determined activity level.

Abstract: In the invention there is generated a playlist of music files that controls an exercise, each of the music files being associated with at least one parameter. The parameter characterizes the efficiency of the exercise. The user may listen to the playlist while performing an exercise and may have a performance instruction through musical characteristics, such as rhythm.

Abstract: The invention relates to a method and device for weight management of humans. First, the user's initial weight and his target weight are received via a user interface of the device, then food intake amount and exercise instructions to be presented via the user interface of the device are generated on the basis of the difference between the user's initial weight and his target weight. In addition, the user's energy expenditure is generated with the device and the user's food intake amount is received via the user interface of the device. Further, the user's current weight is received via the user interface and a change in the user's weight is generated with the device. Further still, the food intake amount and/or exercise instructions to be presented via the user interface of the device are modified with the device on the basis of the change in the user's weight.

Abstract: The invention relates to a sensor (42) placed on the skin, which can advantageously be integrated in a garment and has a contact layer in contact with the skin containing conductive fibres for receiving signals and a moisture retentive moisture layer (41) on top of the contact layer.