"*While ANT+ can transmit data 4x per second, and Bluetooth SMART 64x per second, current power meters aren’t running this fast. Why? It would be too hard on the battery. Most power meters record data closer to once per second. This way, the head unit can essentially enter sleep mode for very brief periods of time, thus prolonging battery life."
https://powermetercity.com/2016/02/1...h-power-meter/

I used to use cycleops speed/cadence bluetooth sensor on my bike to check my speed and cadence using my smartphone.
In my memory, bluetooth(smartphone) data refresh rate was faster than SRM PC7(records 2 per second).
Why don't track sprinters just use bluetooth system to record their data.
Or am I wrong with bluetooth data refresh rate?
Basically, if we have an app that records data 2 per second or more and able to download the data to view in Goldencheetah, that will be best bike computer for track cyclists.

BTW bluetooth sensor I used had trouble reading high cadence, but I could be because of the app.