OHR and responsiveness

I recently lost my Scosche heart rate monitor and instead of replacing it I have been trying to use the monitor in the watch. It seems to work well enough when I'm sitting around but on a treadmill not so much. I have been trying to keep my heart rate at a particular rate for base building by varying my pace, but I'm finding that the reported rare jumps around quite a bit. If I put my hands on the treadmills heart rate sensors sometimes they match but they are often different by 15bpm. I know the treadmill can be off too. But the real issue is that the F5+ number will seem to sometimes jump around from say 128 to 135, or get stuck at a number like 135 when I can feel that it should be much lower.

Has anyone else seen this? Any tricks to make it work better? I wear it tightly on my wrist just above that bone that sticks out. My wrists are not big, which may be the problem.

0 AllanOlesen67 over 6 years ago

Allan and Saho, thanks VERY much, that's great info! It took me a few minutes to figure out what is what on the graphs, even though you guys explained it very clearly. Allan also thanks for posting the link, it's very interesting to look at your data. May I ask what your MHR and CP are?

I guess I'll go with the soft strap, although I just noticed that right now the HRM TRI is about $US 88 (on Amazon) while the soft strap is about $US 56. The extra capabilities of the HRM RUN may not be worth the extra $32 but the TRI might be.

My max. heart rate in running is 181 BPM.
My critical power in running is 227 watt, but needs updating. I am probably 5-15 watt higher right now.

I have the HRM-TRI too (i thought my HRM-RUN had died, so I bought a TRI). The same answers apply to that one.

As a side note: I actually think I will be able to get some benefit from the logger in the TRI when sea kayaking. My clothes tend to get so wet that I lose communication between the watch and the HRM. But I guess it will be possible to download my logged heart rates from the HRM-TRI after the session. Haven't tried that yet.

By the way: I had a look again at the session I linked to. That one is actually not a great advertisement for the HRM-RUN/TRI. I had problems which HR spikes several times during the run. During the first minutes I stopped several times to manually check my heart rate, and it was far lower than indicated by the watch. So I gave up and ignored heart rate completely, only running on power. Around 28:30 minutes into the run, I can see that HR went crazy again for around 5 minutes. I have had these problems with all my HRMs. I think the problem is me, not the HRM. Or perhaps it is my wool clothing which creates static electricity which confuses the HRM.

0 HeliosJim over 6 years ago

I finally got an HRM and used it this evening on a treadmill run. My thinking is that the F5+ was actually measuring my heart rate pretty well, or at least pretty close to what the HRM showed. I was surprised by that. I'm still happy with the HRM. Now I don't have to worry about the watch being too tight or too loose or it not being in the best spot and so on. And I'll use it for cycling, since I'll mount the F5+ on my handlebar. And of course, between the HRM and the Stryd pod, I have an amazing amount of data. Just piles and piles of data. For now I'm watching pace, HR and power, but someday, just someday, maybe all that other stuff will mean something. It sure looks cool...

0 SAHO over 6 years ago

What I like the most with this setup is that as long as everything connects (and it does straigth away 99,9% of the time) you don’t have to spend any energy worrying about data accuracy or getting the tech to work - you just hit start an you’re ready to go!

Enjoy! :cool: