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Indoor Cadence for Climbers

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Old 05-02.-2008, 08:06 AM   #16
Watoni
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Default Re: Indoor Cadence for Climbers

Quote:
Originally Posted by dhk2
Like others here, I've been inspired by Tyson to work harder on FTP via indoor training on the stationary bikes at the local YMCA. Normally I pedal a cadence in the range of 92-95, with some quick accelerations up to 140-150.
However, on a steep climb out on the road with a group this weekend, it occurred to me that for climbing here "high" power is needed at much lower cadence.

EG, on the 15% grade yesterday, was climbing at 4.5-5 mph seated, which I believe requires around 275-300W output for a 200 lb rider+bike. (The hard effort felt about like 275W does on the trainer as well). At this speed, in my (wimpy) 30/25 low gear, cadence is about 50 rpm, well short of the 90-95 that I use for almost all the interval durations.

Many of the club rides here feature 10-20% climbs which really tend to sort out the group, so climbing faster and being able to recover quickly to stay with the pack is a key goal. The obvious question is, should I be doing at least a portion of the indoor interval work at 50 rpm? 275W certainly feels a bit different at 50 rpm than at 100



Yes, it does!

How long are the climbs you are doing? That might help inform whether the gearing is too high.

For an effort of 5 minutes or so, I would say 50 rpm could be good force work or an opportunity to punch it for a VO2max interval. Anything above 15 minutes should be more in the threshold watts range at a doable cadence.

For instance, I was out of shape when I did the Pantani Granfondo last year where the two big climbs are the Gavia and the Mortirolo. I can say that the middle 6km of the Mortirolo that come in at an average of 14% are no picnic, especially when it's hot and you have a few climbs in your legs already. Many hacks like me were walking or falling over due to improper gearing. I just plugged away in a 34x29 at about 50 rpm (and occassionally lower) for the better part of an hour -- its 12.4km @ 10.5% average!

Don't avoid hills, but perhaps lay off the steepest hills and do ones where you can maintain a more reasonable cadence. I am sticking to 5, 8, 15km climbs that average from 6-8% rather than doing 5-7km climbs that average from 10-12%

On the trainer, why not train for optimum cadence --

On the question of what cadence is best, here is one coach's view


http://53x12.com/do/show?page=article&id=27
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Old 05-02.-2008, 11:27 AM   #17
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Default Re: Indoor Cadence for Climbers

Duration of "steep climbs" around here would normally be from 3-5 minutes at 4-6 mph. What I call "steep climbs" are those where desired cadence of 80 rpm can't be maintained despite being in bottom 30/25 gear. Longer climbs are usually more like 6-8%, but they don't present the same problem since I can keep the cadence up. Of course, long climbs often include some steep sections.

Appreciate all the input. The concensus as I read it seems to be to continue to work on FTP at optimum cadences primarily; that will be the main route to faster climbing and overall time reduction on hilly century events. Also could include some high load/low cadence trainer intervals for maybe 3-5 min duration, or more real hill climbing for short-duration power, but that shouldn't be the main focus.
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Old 05-02.-2008, 11:40 AM   #18
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Default Re: Indoor Cadence for Climbers

watoni: We've got essentially the same bottom gear ratio, and it sounds like we're climbing at similar speeds. The reason I'm focusing on hills this spring is that I'm going to Italy in April when I'll be riding the hilly routes around Riccione for a week. Won't be riding the "Nove Colli" or anything crazy, but I don't want to be embarassed on the climbs, or get back too late to enjoy the afternoon pasta buffets
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Old 05-02.-2008, 04:32 PM   #19
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Default Re: Indoor Cadence for Climbers

Quote:
Originally Posted by dhk2
Duration of "steep climbs" around here would normally be from 3-5 minutes at 4-6 mph.
hills of this length are what some call sprinter's hills.. i.e. short enought that sprinters can get up them fast. Improving your anarobic capacity can help for hills of this length...

you are right though... work SST and Th as much as possible.. in the winter almost all my training consists of SST/Th training. this is going to be the bedrock apon which everything else is built. then ~3 weeks before your important event you can start working in some AnCap intervals 3-5min @ about 1.2xFTP with 2-3min recovery. can start out with sets of 3 and then as you get better work up to 2 sets of 3... and again you don't need to be doing them at 50rpms, do them at a comfortable rpm. doing them on your group ride is an option, but i have found that the best way to do them is to do them alone on a hill or otherwise (trainer or flats... with hands on tops and sit upright as you would on the hill) under very controlled conditions/intensities and recovery... in the group you can't always control the amount of recovery and intensity so doing them as part of a group ride is not allways as effective as doing them alone... i wouldn't recommend you doing these workouts more than once a week.. not because you can't do them but mostly because doing these takes time and energy away from doing your longer (10-20min interval) Th work.
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Old 06-02.-2008, 12:14 PM   #20
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Default Re: Indoor Cadence for Climbers

Quote:
Originally Posted by doctorSpoc
hills of this length are what some call sprinter's hills.. i.e. short enought that sprinters can get up them fast. Improving your anarobic capacity can help for hills of this length...

you are right though... work SST and Th as much as possible.. in the winter almost all my training consists of SST/Th training. this is going to be the bedrock apon which everything else is built. then ~3 weeks before your important event you can start working in some AnCap intervals 3-5min @ about 1.2xFTP with 2-3min recovery. can start out with sets of 3 and then as you get better work up to 2 sets of 3... and again you don't need to be doing them at 50rpms, do them at a comfortable rpm. doing them on your group ride is an option, but i have found that the best way to do them is to do them alone on a hill or otherwise (trainer or flats... with hands on tops and sit upright as you would on the hill) under very controlled conditions/intensities and recovery... in the group you can't always control the amount of recovery and intensity so doing them as part of a group ride is not allways as effective as doing them alone... i wouldn't recommend you doing these workouts more than once a week.. not because you can't do them but mostly because doing these takes time and energy away from doing your longer (10-20min interval) Th work.
Before seeing your reply, tried a 5 min interval today on the gym trainer at 50-60 rpm and ~ 120-150% of FTP. Did this after 30 minutes of usual SST interval at normal cadence. The effort didn't feel as tough on the legs as I had expected, but it was only 5 minutes. HR went from bottom of L4 to the top during the effort; was working pretty hard. If nothing else, I'm no longer afraid of load setting #15

As a quick summary, I got "More short-term power is key for the sprinter hills, and don't worry about the (low) cadence issue." Hope that's right, and appreciate your recommendations.
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