| 摘要 |
The invention relates to a system, performance monitor, server and computer product. The system comprises at least one user-specific performance monitor for registering training information, where the performance monitor communicates training information using a two-way wireless data transmission connection and is associated with a performance monitor-specific identifier. The system further comprises at least one server for managing the performance monitor, where the server communicates training information with the user-specific performance monitor using a two-way wireless data transmission connection and performance monitor-specific identifiers. The server is in a first stand-by mode for a pre-determined time window of the server for establishing the two-way wireless data transmission connection, and the performance monitor is in a second stand-by mode for a pre-determined time window of the performance monitor for establishing the two-way wireless data transmission connection, where the predetermined time window temporally overlaps with the predetermined time window of the server.
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