Originally Posted by
rebayona
I can't tell what is the speed source here but within one second: same cadence, constant slope, same HR... how come the speed can change that much within seconds?
The speed is from the sensor (if there's a sensor). I haven't looked at Golden Cheetah in a while (and I'm not running a sensor).
The distance is from the sensor (calculated from the wheel rotations). The distance also shows a drop.
With digital sensors, the failure mode is losing rotations/counts, which means the speed and distance will be lower than actual when things aren't working properly.
One could calculate the speed/distance from the GPS coordinates to see how they compare.