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Old 12-06-08, 07:53 PM   #1
skinnyguy
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Did a FTP/LTHR test today w/ good results

I haven't completed on of these on my trainer since May of this year and since i have trained more this year i wanted to compare from my previous results. In my last test i did the friel test and used the last 20min of a 30min effort to calcualte my LTHR. at that time i rode my trainer @ 31.72km/h for the last 20min @ 187bpm. today i decided to go for one hour straight and get a real reading of my FTP/LTHR to my surprise i was able to average 193bpm @ 31.13km/h. the first 30min was averaged @ 31.72km/h the second @ 30.54km/h. here is my dilema. i don't have a power meter all i have is this chart from the minoura website about a given wattage at any certain speed.
http://www.johnhenrybikes.com/learn/...er-review.html

according to this if it is correct i would be around 300w for the hour. i weight 56.81kg and that would mean 5.28 w/kg. how accurate would you say that chart is? i have only been riding a year and a half and while i think i am a strong rider i can't really see this a totally possible. i mean it could be but??? i really need a power meter i guess.

i guess the w/kg really kicks in on the mountains which we have none of here in SW Ontario and 300w makes me an average rider on the flats. I think i live in the wrong area to take advantage of my body makeup.
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Old 12-06-08, 08:20 PM   #2
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It's possible but if you have that much power you should be dropping people on rides easily. Are you? How tall are you? I think it's more likely that the trainer-based power estimate just isn't very accurate.
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Old 12-06-08, 08:22 PM   #3
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Also 31 km/h is not very fast, you shouldn't need anywhere near 300W to do that speed. Did you maybe mistake mph and km/h?
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Old 12-06-08, 08:29 PM   #4
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I am 5' 11.5" tall. I only ride on ocassion w/ a small group ride from our LBS which is a mix of Tri athaletes, and your typical weekend warriors and another masters MB rider. It is a MOnday night recovery ride for me. I can drop them fairly easy if i want but usually just relax and chit chat. No mistake on the speed, its a mag/fluid trainer the weight on the mag side is 3.3lbs so thats pretty heavy and combined with the variable fluid resistance its pretty hard to pedal. oh well i guess i need a power meter.
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Old 12-06-08, 09:08 PM   #5
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The way I read that chart you did 280 watts. Its hard to say how accurate the trainers are but I'd expect them to be a lot less accurate than a power meter.

Still, it sounds like you're fairly strong. If you are interested, you should do some racing.
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Old 12-06-08, 09:10 PM   #6
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1. No, you can't get a reliable power estimate from a trainer. Even many trainers with built-in power measurement aren't very accurate.
2. Have a donut.
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Old 12-07-08, 02:54 AM   #7
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Don't forget at that speed on the trainer you aren't fighting the wind etc...
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Old 12-07-08, 05:20 AM   #8
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i did some racin fthis year and moved to cat 3 a few races into the season so i am a cat 3 for next year. we'll see how it goes.
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Old 12-07-08, 05:26 AM   #9
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so i am a cat 3 for next year.
eat two donuts.
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Old 12-07-08, 06:19 AM   #10
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(puzzled)

how can you get to be a cat 3 after just a few races?
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Old 12-07-08, 09:03 AM   #11
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(puzzled)

how can you get to be a cat 3 after just a few races?
Here, in Ontario (Canada) we need 10 points to upgrade from Cat 4 to Cat 3. A win is worth 5 points, 2nd place is worth 4 points, etc., down to 1 point for 5th place. In terms of ability, our Cat 3 is probably similar to your Cat 4.
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Old 12-07-08, 09:14 AM   #12
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Here, in Ontario (Canada) we need 10 points to upgrade from Cat 4 to Cat 3. A win is worth 5 points, 2nd place is worth 4 points, etc., down to 1 point for 5th place. In terms of ability, our Cat 3 is probably similar to your Cat 4.
Interesting... is there a cat 5 or does everyone start in cat 4 like women in the US? It's funny though, aacording to what you wrote you need half the number of points to upgrade but you also get half the points for a win, well at least for road races anyway. Are those points for any race or is there any differentiation between road races and crits?
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Old 12-07-08, 09:38 AM   #13
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Interesting... is there a cat 5 or does everyone start in cat 4 like women in the US? It's funny though, aacording to what you wrote you need half the number of points to upgrade but you also get half the points for a win, well at least for road races anyway. Are those points for any race or is there any differentiation between road races and crits?
Cat 4 (Senior 4, actually) is the beginner category. RR and crits give the same number of points.
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Old 12-07-08, 12:20 PM   #14
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I'm pretty sure you put out between 270-280w, according to that (poorly organized) chart.

Still very strong for your weight. Nonetheless it can under or overestimate your power by up to 20%, so I wouldn't have faith in it. Just use it for consistency reasons rather than accuracy reasons.
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