Abstract: A wearable device for monitoring physical activity of a user, the wearable device being reversibly attachable to a chest strap and an arm strap. The wearable device comprises an ECG sensor arranged to collect ECG measurements of the user only when the wearable device is attached to the user's chest by the chest strap, and a PPG sensor arranged to collect PPG measurements of the user when the wearable device is attached to the user's arm or wrist by the arm strap. The wearable device also comprises control circuitry arranged to switch the wearable device between an ECG only mode and a PPG only mode. In the ECG only mode, the control circuitry is configured to control the ECG sensor to collect ECG measurements but prevent the PPG sensor from initiating PPG measurements. In the PPG only mode, the control circuitry is configured to control the PPG sensor to initiate PPG measurements but prevent the ECG sensor from collecting ECG measurements.

Abstract: A system for monitoring physical activity, in which activity data for an individual is be captured and stored whether the activity takes place in a health club or away from the health club (e.g. outdoors). The proposed approach is to capture heart rate data using an individual heart rate monitor (e.g. a chest belt) that has inbuilt memory for storing the heart rate data. The data is uploaded from the belt to a database, preferably a database that is accessible over the Internet, via a receiver station that will typically be located in a health club where the user is a member.

Abstract: A system for monitoring physical activity, in which activity data for an individual is be captured and stored whether the activity takes place in a health club or away from the health club (e.g. outdoors). The proposed approach is to capture heart rate data using an individual heart rate monitor (e.g. a chest belt) that has inbuilt memory for storing the heart rate data. The data is uploaded from the belt to a database, preferably a database that is accessible over the Internet, via a receiver station that will typically be located in a health club where the user is a member.

Abstract: A system for monitoring physical activity, in which activity data for an individual is be captured and stored whether the activity takes place in a health club or away from the health club (e.g. outdoors). The proposed approach is to capture heart rate data using an individual heart rate monitor (e.g. a chest belt) that has inbuilt memory for storing the heart rate data. The data is uploaded from the belt to a database, preferably a database that is accessible over the Internet, via a receiver station that will typically be located in a health club where the user is a member.

Abstract: A system for monitoring physical activity, in which activity data for an individual is be captured and stored whether the activity takes place in a health club or away from the health club (e.g. outdoors). The proposed approach is to capture heart rate data using an individual heart rate monitor (e.g. a chest belt) that has inbuilt memory for storing the heart rate data. The data is uploaded from the belt to a database, preferably a database that is accessible over the Internet, via a receiver station that will typically be located in a health club where the user is a member.