DEVICE POWER SAVING DURING EXERCISE

摘要

There is provided a method, comprising: supporting a normal operation mode (210) during which functionalities of a portable apparatus (100) are available through an operating system (300) of the apparatus (100), wherein the operating system (300) comprises a plurality of layers including a kernel (302) and library functions-layer (304); supporting a limited operation mode (212) during which the apparatus (100) is configured to execute a physical activity algorithm (220) based on physical activity data corresponding to a physical activity session performed by a user (110) of the apparatus (100), wherein the physical activity algorithm (220) applies a direct low-level hardware access bypassing at least the layers above the kernel (302) and the library functions-layer (304); and switching between the normal operation mode (210) and the limited operation mode (212).