Workout Building Question - HR/Speed

With the help of @Roberto_Viola I have been able to get QZ installed on my NordicTrack Commercial 2450 and linked to my intervals.icu so that my planned workouts are showing up on the treadmill and can be executed on the treadmill easily. However we are running into one issue that may be with the way I am building the workouts in intervals.icu or with how it is sending the data to QZ. Below is a snippet of a workout, I try to train in specific HR zones. QZ knows these zones, and tries to adjust the workout (speed) based on this. However it starts at 1.0 mph and moves up by 0.1 mph every 10 seconds, so effectively I never get in the right zone since it takes forever. Is there a better way to build these workouts in intervals.icu? Is there a way to have intervals.icu send over a starting (estimated) speed for the HR zone instead of 1.0 mph?

Just an example of how I write my workouts:

Thank you

1 Like

I don’t think that intervals is calculating the speed. I would have thought the translation must be done in the app, so QZ is converting HR to speed.

Qz developer here. Qz has a workout editor to do so like this

But it would be nice if intervals.icu does this directly from itself so QZ can download directly from the intervals.icu integration

You can specify pace workouts for that.

But how should intervals be able to do a HR/speed conversion? QZ can work as closed loop, while intervals has no feedback loop.

Yes but pace intervals are different from heart rate ones. We just need to specify a standard tag for the HR workouts. Qz did it in the xml setting hr min max and loop pid timing

For instance, if I know my LT1 is 150 bpm, it would be great to build a workout where it keeps me in z2 hr (~140-145 bpm) for an hour. Rather than set a pace of say 10 min/mi where I have a good idea that after 30-45 min my heart rate might drift from 145-152 and take me out of the zone. While the HR zone based workout should lower my speed slightly to keep me in the correct zone.

I could theoretically build pace based workouts, but that is really dumbing down the workout and not using the feedback from my HR monitor to optimize the work as the technology should allow for.

From my perspective it should work the way where you create a workout in intervals.icu like @Jesse_Schulman did and QZ should be able to handle it.
intervals.icu should only send the basic workout information without some client-specific calculations or settings, also to maximize compatibility with other apps.

@Roberto_Viola
Maybe you can add an option in QZ with a starting speed / resistance for every hr-zone?

You can do already with the workout editor in qz