Your loss, mate.
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To what reference standard are you comparing it to reach this conclusion?
(Full disclosure: CORE gave me a sensor when they first hit the market. I have used it in exercise physiology lab classes, but thatās about it.)
Core temperature increases more slowly than heart rate, etc., but not as slowly as the CORE sensor makes it seem. IOW, their estimate suffers from a significant lag.
Must be nice.
A bit ironically, not much attention seems to have been paid to pursuing development/popularization of heat stress protocols until CORE came along, even though truly accurate measurement of core temperature has long been possible. But, yes, once some reasonable guidance is out there, you donāt need any sensor to follow them.
Hmm, so hereās a question: if CORE existed back when I was attempting to prepare for the TT at master nationals in hot, humid Arkansas while living in milder Maryland, would it have helped me do a better job? I donāt actually know. On the one hand, I was doing indoor sessions without a fan or A/C at the highest intensity I could tolerate 5 d/wk, and Iām not sure what I could have done differently. On the other, perhaps if I had data suggesting it wasnāt working, or wasnāt working well enough, I might have been motivated to pursue additional options (e.g., sauna time)? Or, would the lag of the CORE fooled me into thinking that what I was doing was more effective than it really was?
That which gets measured gets improved, but that which is poorly estimated does not?
Warning! A bit of thread driftā¦
AFAIK, this was the first study really suggesting that heat stress training could improve performance not only in hot conditions, but in cooler ones as well:
Also, for any budding exercise physiologists out there and in further honor of Bill Finkās 90th birthday that was celebrated up at Ball State yesterday, here is his first first author publication, and only one of two in his long career as Dave Costillās right hand man:
Your little digs and insults hurled at the poor in the cheap seats is clearly why you have a problem playing nice on the Internet.
If you had a feature request, why didnāt you contact TrainerRoad directly?
You were the one who made the enormous performance gain claim. If itās working so well for you tell us how much your FTP has gone up. Tell us what workouts you do. That would be interesting. So far, you posted a few pro athlete anecdotes and a Core advertisement.
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Sureā¦as long as the what is being measured contributes to the improvement.
Are there studies showing that raising core body temps to 104* vs 102* makes any kid of performance improvement? We know the benefits of specific power measurement.
Are you measuring to hit specific temps or just measuring to see if you have raised core temp?
In case it isnāt clear, I am not dismissing the idea of heat acclimationā¦ā¦I am simply questioning if it is necessary to measure core temp precisely to gain the benefit or if raising core temp generally is sufficient.
Honestly, youāre the only one acting like a keyboard warrior. I get that youāre disappointed people donāt like your idea, but I havenāt seen anyone other than you directing aggressive statements at others.
The people who donāt agree with you are just pointing out that they think TR development time would be best spent elsewhere. Try not to take that so personally.
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Which is a bit odd, as the benefits of heat training are well established.
However they arenāt enormous performance gains, and Iām guessing that is part of the pushback. Well, out here when the afternoon temps go above 90F / 32C, there is a pretty big difference between training outside day 1 of those temps, and day 14, and day 28. Personally I donāt consider āmassiveā as seeing performance decline on day 1, and then returning back to where I was before it got hot. But some might 
FWIW @TonyHasBeen Iām sure you are aware of other analytics packages listed here https://corebodytemp.com/pages/viewing-and-analyzing-core-data which I believe better represent ātable stakesā for analytics and currently support Core temperature sensor. Not discounting your feature request, Iād like to see that and at least 5 other things before TRās analytics would be of much use for myself.
most of us are just saying it isnāt worth the development time of TR to incorporate the reading into an on-screen field.
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FWIW, I never questioned heat training, Dan Bingham, or any of the other anecdotes. I know pros do this stuff to get that last couple percent of edge.
Like @WindWarrior Iāve trained in the heat (in New Mexico). After acclimation, I could go out and ride at noon when it was 100F (38C) and feel just fine. Iād even take my regular two bottles and not go to any great lengths to accommodate riding in the heat.
I seem to recall Anna Kiesenhofer doing heat training prior to the Tokyo Olympics where she won a gold medal. I think she even used a Core sensor.
Enormous gains though? If my New Mexico heat training gains were enormous, then by that logic, I could go out on some cool morning and put out enormously bigger watts compared to the heat of the day watts. That was not my experience.
I do think Tony underestimates what it would cost TR to support a new sensor on four platforms and then maintain and support that software for a handful of users forever more. And he can just watch his temperature with their app on his phone. Iām not sure why TR would have to support a new sensor.
FWIW I go out on cool mornings in the summer and crank out bigger watts at and above threshold. Definitely juice from that temp squeeze.
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How enormous are those extra watts?
Living in Houston (hot and high humidity), I see pretty significant performance gains when the temps drop. We recently had a big dip (went from months of 80 degrees at 7am to 50 degrees for a weekend), and threshold felt ridiculously easier. Not saying youāre wrong, just adding my n=1 experience.
Honest Qā¦how can you tell that juice is from heat training and not your general training?
LOL, you donāt see me posting that word. Iāll say that for myself, there is absolutely some nice juice from squeezing down the temp from 90s to 60s and 70s. Iāve got better things to do this afternoon, sorry no time to do a quick analysis but the heat adaptations are real.
by this logic, perhaps all analytics platforms should be stuck on HR, cadence, and speed? Hey, Iāve been in software for 30+ years, and made plenty of tough roadmap calls. Its one thing to say āTR is going to prioritize features that drive subscription revenue, its a niche product and the analytics donāt currently display temperature recorded by a bike computer, seems like a long shot.ā And another to try and dismiss on the basis of software carrying costs. And ultimately, none of you are product manager so its easier to say āI wouldnāt vote for that, Iām still waiting for bigger features that should make me faster.ā
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Maybe but before TR goes in that direction, they would need some sort of clue that using a Core sensor is actually beneficial to its athlete population.
I seem to recall Nate and crew doing heat training by pedaling in the sauna. It didnāt seem to lead anywhere conclusive.
One doesnāt need TR to display the senorās read out for one to do heat training. One can display the data in the Core app or record it to a .fit file and do whatever you want to do with the data later.
Searching pubmed I find this:
However, under both levels of heat load, the body temperature indicated by the CORE sensor did not agree well with T rec, with approximately 50% of all paired measurements differing by more than the predefined threshold for validity of ā¤0.3 Ā°C. In conclusion, the results obtained do not support the manufacturerās claim that the CORE sensor provides a valid measure of core body temperature.
Unfortunately, lately, different wearables such as the CORE sensor are often marketed with aggressive and potentially exaggerated claims that lack a sound scientific basis [20,21].
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Even if not displayed on the workout screen, Iād like to see (with user permissions) TR hoover in all this data for what eventually might be useful.
I have a Core, wouldnāt replace it if it broke, but thereās certainly a point the reading gets to where things become much harder effort wise. Itās already in the fit file unless theyāre stripping stuff out.
Already posted up thread.
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