I have done my threshold guided test with chest strap, my garmin 255 is working normally, my polar H10 chest strap is working too.
When I finished my test it told me that my threshold heart rate is "78"
it is absolutely wrong, below is my test result:
Warmup: 2 mins
Interval 1 (4 mins at Avg HR 146 - Pace 6:58/ KM)
Interval 2 (4mins at Avg HR 155- Pace 7:52/ KM)
Interval 3 (4mins at Avg HR 163- Pace 7:18 / KM)
Interval 4 (3 mins at Avg HR 171- Pace 6:46 / KM)
Interval 5 (3 mins at Avg HR 179 - Pace 6:31 / KM)
How should I fix my watch? is it working correctly?