Abstract: The invention presents a system for confirming a performer of a fitness exercise. The system includes a heart rate monitor (104) for measuring heart rate parameters (404A to 404N) associated with the fitness exercise from the heart rate of the performer. The system also includes a mathematical model (406) including dependence information between heart rate parameters (404A to 404N) and classes classifying the performer in classes (402A to 402N) such as age or weight. Heart rate parameter data measured from the performer and information in the mathematical model are utilized in identifying the performer of the fitness exercise.

Abstract: The invention presents a system for confirming a performer of a fitness exercise. The system includes a heart rate monitor (104) for measuring heart rate parameters (404A to 404N) associated with the fitness exercise from the heart rate of the performer. The system also includes a mathematical model (406) including dependence information between heart rate parameters (404A to 404N) and classes classifying the performer in classes (402A to 402N) such as age or weight. Heart rate parameter data measured from the performer and information in the mathematical model are utilized in identifying the performer of the fitness exercise.

Abstract: The invention relates to a method and a measuring arrangement for determining the speed of a runner, walker or another moving and living object by a measuring arrangement. In the actual determination of speed during use the method comprises measuring at least one measurement variable which is directly or indirectly related to the object's stepping and dependent on the speed of movement of the moving and living object. An essential feature of the method is that, before the actual determination of speed during use, the dependence between the measurement variable and the speed is at least once taught to the measuring arrangement as a formula by means of user-specific teaching information, the formula being used for the actual determination of speed during use.

Abstract: The invention relates to an electrode structure and a heart rate measuring arrangement for measuring an ECG signal on the skin of a person's chest. The electrode structure (100) comprises a band-like component (101) that is fitted against the skin (102) of the person's chest and that is made of soft and flexible material that follows the skin closely. At the ends of the electrode structure (100) there are electrodes (118, 122). The inner surface (116) of the electrode structure is an adhesive surface for attaching the electrode structure (100) on the skin (102) of the person's chest.

Abstract: A wrist-worn device comprising a wristband to be arranged around the wrist and an electronics unit in connection with the wristband, the electronics unit being arranged to process a value of an exercising variable relating to a physical activity, the wrist-worn device further comprising a display for showing the exercising variable value. The wristband, electronics unit and display of the wrist-worn device are integrated together to form a single, uniform wrist-worn device.

Abstract: A wrist-worn device comprising a display for showing a heart rate parameter value, such as a heart rate measured from a person's body or a heart rate variable derived from the heart rate. The display comprises at least two display areas which display areas the wrist-worn device is arranged to employ to show that a heart rate parameter momentarily belongs to a heart rate parameter value range corresponding to the display area and which wrist-worn device comprises at least one sliding means for selecting a desired heart rate parameter value range by mechanically sliding the sliding means to cover at least one display area at a time.

Abstract: The invention broadly provides a method and apparatus for measuring the power output of one powering a vehicle or other system driven by the elongate flexible member such as chain. In a preferred embodiment described, the vehicle is a bicycle. The method of the invention comprises measuring the speed and tension of the drive chain and calculating the power output therefrom. The apparatus of the invention includes a chain speed sensor, a chain tension sensor, and electronic processing apparatus to calculate and display the power output based upon the chain measurements.

Abstract: The invention relates to a screen (300), which is particularly intended for a functional unit measuring heart rate from a user's chest. Electrodes (304) of the functional unit and preferably also an electric circuit (306) are protected against extracorporeal interference by the screen (300), which closely follows the electrode (304) or a supporting structure (40, 50, 60, 70) at least at the electrode (104, 204, 304, 402, 502, 602, 702).

Abstract: An electrode structure for measuring an ECG signal on a person's skin. The electrode structure (100) to be arranged on the person's finger (102) comprises an inner surface (116) residing against the finger (102), which inner surface (1 16) of the electrode structure (100) comprises an inner surface electrode (118), the electrode structure (100) further comprising an outer surface (120) opposite to the inner surface (116), which outer surface (120) of the electrode structure (100) comprises an outer surface electrode (122) to be arranged against a point on the person's skin other than said finger (102) having the electrode structure (100) arranged thereon, the electrode structure being arranged to measure a potential difference caused by the ECG signal between a first electrode and a second electrode.

Abstract: A bicycle which comprises as force transmission equipment a chain for transmitting the muscular strength of a person pedaling the bicycle from the person to the bicycle for the purpose of moving the bicycle, characterized in that the chain has a vibration transducer which is arranged to vibrate at a resonance frequency proportional to the force transmitted by the chain, and the bicycle comprises a reading device separate from the chain for reading the resonance frequency of the vibration transducer, to which reading device calculation means are connected for calculating the force affecting the chain on the basis of the resonance frequency.

Abstract: A wrist-worn device (100) comprising a background plate (106) to be illuminated for a display (102) of the wrist-worn device (100), and a light source (108A, 108B) for illuminating the background plate (106). The wrist-worn device (100) comprises a guide chamber (300, 302) at least partly surrounding the light source for collecting light emitted by the light source (108A, 108B) and for directing it to the background plate (106).

Abstract: The invention relates to an electronic wrist-worn device, such as a heart rate monitor, a sportsman's watch or a diving computer, and its control method. The outside of the casing of the device comprises a bottom surface to be placed against the wrist, a top surface (304), and a side surface (308) between the bottom surface and the top surface (304). On the top surface (304) of the casing there is provided a first display (306) connected to the control electronics. On the side surface (308) of the casing there is provided a second display (400, 402, 404; 406) connected to the control electronics. The best viewing angle of the first display (306) and the best viewing angle of the second display (400, 402, 404; 406) are at an angle of 60 to 120 degrees with respect to each other.

Abstract: The invention relates to an ECG electrode structure suitable for use in water during swimming, for example, and to a method for measuring an ECG signal from a person who is in water. To measure a difference in potential (304), the ECG electrode structure comprises a first measurement electrode (502) arranged to be in contact with an area of the skin (202) on a user's body such that, when in use, the electrode is electrically insulated (510) from the water (108), and a second measurement electrode (300). When in use, the second measurement electrode (300) is arranged to be in contact only with the water (108), the second measurement electrode (300) thus being in contact through the water with an area of the person's body other than the area under the first measurement electrode (502).

Abstract: A heart rate monitor includes a measuring means for measuring the heart rate of a person during a fitness exercise, and a calculation unit for forming the value of one or more stress parameters from the heart rate measured during the fitness exercise. The calculation unit is arranged to compare the stress parameter value during the fitness exercise with a threshold value formed for the stress parameter before the fitness exercise. The heart rate monitor also includes a display means for showing exceeding of the threshold parameter to the user during the fitness exercise. The calculation unit is arranged to use the value of expiratory flow measured from the person before the fitness exercise for forming the threshold value of the stress parameter.

Abstract: The invention relates to a screen (300), which is particularly intended for a functional unit measuring heart rate from a user's chest. Electrodes (304) of the functional unit and preferably also an electric circuit (306) are protected against extracorporeal interference by the screen (300), which closely follows the electrode (304) or a supporting structure (40, 50, 60, 70) at least at the electrode (104, 204, 304, 402, 502, 602, 702).

Abstract: The invention relates to a method and an apparatus for identifying a heartbeat. In the method, an arterial pressure signal is measured in the form of multichannel measurement, and the required signal-processing operations, such as filtration, are carried out if necessary. The method also comprises carrying out signal detection and decision-making concerning the acceptance as a heartbeat signal. According to the invention, the signal detection includes multichannel channel-specific detection for the purpose of identifying signal components of different channels, and the obtained channel-specific detected channel signals are used as input data during the decision-making stage.

Abstract: A heart rate measuring arrangement comprising measuring means (410A-410B) for measuring the heart rate, forming means (452) for forming control information from the heart rate information obtained by measuring to control a recovery exercise, display means (450) for presenting the formed control information.

Abstract: A heart rate measuring arrangement comprising measuring means (500A to 500B) for measuring a person's heart rate during exercise and a calculating unit (532) for calculating an assessment of the person's energy consumption during exercise using at least two calculating parameters, one of which is a heart rate parameter included in the person's measured heart rate information, the heart rate measuring arrangement further comprising presenting means (530) for presenting the formed assessment of the person's energy consumption. The calculating unit is arranged to use an energy consumption reference value as a calculating parameter, which reference value is obtained by using one or more performance parameters representing the person's physical performance.

Abstract: The invention relates to an arrangement for measuring a biosignal from the surface of the skin of a living human body. The arrangement comprises a casing (5) on which a measuring sensor (300) rests which is to be arranged against a measurement target (1) on the body, and a fastener (6) for fastening the casing (5) to the measurement target (1). The arrangement is characterized by comprising an element (7), such as a spring element, which rests on the casing (5) and the fastener (6) such that the element (7) is arranged to turn the casing (5) substantially towards the measurement target (1) with respect to the fastener (6).

Abstract: A heart rate measurement arrangement wherein the heart rate measurement arrangement comprises a calculating unit comprising a mathematical model arranged to form a person's energy metabolism level as an output parameter of the model using as input parameters of the model one or more heart rate parameters and one or more physiological parameters each describing a physiological characteristic of the person, the heart rate measurement arrangement further comprising display means for displaying information formed in the calculating unit.