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Garmin

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SPR 4 Mar 4:03pm, 4 Mar 2025 47,206 posts	Quote Pin SPR V2 of predictor is supposed to be current shape, that's why it takes load (and the type of load) into account. I'm sure there is a bit of sharpening it can't account for but it's shouldn't be 1 min out for 5k imo. My specific issue with V2 of the predictor was it was too slow though (by almost 2 mins for 5k and more for other distances) which has been corrected in V2.x.
AndyS 4 Mar 4:54pm, 4 Mar 2025 3,390 posts	Quote Pin AndyS My max HR is set correctly, it's a recent watch (Fenix 8), up to date software - but the predictor is ludicrously optimistic. (5k time is almost 10 minutes quicker than I can currently manage).
SPR 4 Mar 9:54pm, 4 Mar 2025 47,212 posts	Quote Pin SPR 10 mins wrong should be impossible for 5k and must be some sort of record. VO2 Max calc must be coming out quite high? I could explain the error in my calculations previously fairly easily as my 5k matched to a few seconds over 3 years of races then the new predictor adding load didn't think I was doing enough to hit those times. I'll have more data on how the September update behaves after racing on Saturday although I think a summer of racing will be the best way to see how it performs.
SPR 4 Mar 9:55pm, 4 Mar 2025 47,213 posts	Quote Pin SPR Obviously that's how it performs for me.
tipsku 6 Mar 2:30pm, 6 Mar 2025 4,773 posts	Quote Pin tipsku I did some reading and listening and I think I found some possible explanations for the discrepancy of my ability to run short intervals really fast without driving my lactate up high but then I'm unable to translate this to faster race times. https://www.youtube.com/watch?v=mC6LKJKdE-Q In this video, Steve Magness explains the Igloi method around the 17 min mark, doing short intervals at higher than threshold pace with adequate rest so you can spend time running faster but still stay in the lactate threshold zone. I think that is what happened. I just got enough rest so that I could recover and keep my lactate in check. A bit further into the video, around 23 min, he also explains that lactate threshold is not 4 mmol for everyone but it can vary from 2 to 7 depending on your muscle fibre distribution, your training history and focus. Mid distance runners can have a LT higher than 4 while in long distance runners, it can be lower than that. I believe that due to my focus on mostly endurance in the past months and in general over years, my threshold could be quite low so I reach a turning point pretty quickly, maybe around 2.5 or so and then it's a steep upwards trajectory for me in a race where I try to hold a continuous pace. I always found running long and slow a lot easier than running fast, so naturally, I gravitate towards that in training because I'm good at it and it comes easier to me. In 2018, I averaged 13 mpw for 3 months with the longest run being 10 miles, mostly around 10-11 m/m pace and then I ran a sub 4 hour marathon (9 m/m) on a hilly course in Bavaria. It comes naturally to me, I just have to do a little maintenance running to run sub 4. Going sub 3:30, however, took me 8 and a half years to accomplish with lots of setbacks and close but no cigar attempts. Racing fast is hard. On the other hand, I have power. I beat my friend who recently ran a 6:01 mile (my SB is 6:39) in 20-25 seconds hill sprints where she couldn't keep up with me. I finished each rep 2-3 seconds ahead of her. So it's that middle range between 1500 m / mile and 10k pace where I'm not as good as I could be because I'm underdeveloped there and my threshold isn't very high. I talked to her husband who coaches her and he thinks that I have a lot of room to improve there.
chunkywizard 6 Mar 3:41pm, 6 Mar 2025 17,977 posts	Quote Pin chunkywizard I did a session last night which was meant for improving lactate threshold. 1x 1K, 80% effort (3:58) 2x 1K, 1 mile pace (4:10, 4:05) 3x 1K, 5K pace (4:09, 4:10, 4:08) 60s between reps, 120s between sets 13K total. SB for 5K is 21:54. Looks like I should be getting that SB down! I think it's a great indicator than the race predictor of 19:52 could be possible with more of the above. I have a track 5K coming up at the end of the month where I am targeting sub 21.
RooA 6 Mar 4:15pm, 6 Mar 2025 3,084 posts	Quote Pin RooA Quick question. Is there an armband heart rate monitor that would work with a Garmin watch? Polar? deletes massive explanation of why I might want this
SPR 6 Mar 4:38pm, 6 Mar 2025 47,232 posts	Quote Pin SPR Yes Polar Verity Sense is the best out there by many accounts and is what I have.
RooA 6 Mar 4:41pm, 6 Mar 2025 3,085 posts	Quote Pin RooA Thanks SPR!
tipsku 6 Mar 4:52pm, 6 Mar 2025 4,774 posts	Quote Pin tipsku That's a great session, @chunkywizard I'm taking notes because I need to improve there as well. That looks like a lot of volume at faster paces and I'm sure your SB is going down soon. I did just a short session yesterday on the track with 3x 400s and 3x 800s where I first went well above threshold pace (1:32, 1:29, 1:30? for the 400s which is faster than my mile pace) followed by 800s around mile pace. A friend helped me to pace them right. I tested new shoes as well so didn't want to go to long in them in the first session but it looks very promising.