Depending on the training computer, you can set 1, 2, 5, 15 or 60 second sampling rate. Stored exercises are thus made up of samples. The time spent in each Sport Zone is calculated according to these samples transferred to the software. The Total time is then summed up from the time spent in each Sport Zone.
Due to recalculation this total time may slightly differ from the exercise time found in your training computer exercise log.