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Search: Posts Made By: Bacciagalupe
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Forum: Road Cycling
07-09-13, 05:05 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

And no one has given a biomechanical reason why...

And no one has given a biomechanical reason why all that data, collected under different conditions, that all produce the same force curves, has relevance whatsoever to sprinting.

Is it the rider...
Forum: Road Cycling
07-09-13, 04:08 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

I'm actually OK with that view. However, I...

I'm actually OK with that view.

However, I really can't recall a lot of people who say "I'm switching from platforms to clipless because my foot keeps sliding off the pedals!" ;)



Yes, I...
Forum: Road Cycling
07-09-13, 04:03 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Suit yourself. The bottom line is, I go with...

Suit yourself.

The bottom line is, I go with objective data. You apparently reject objective data, and pour scorn on everyone who produces it. Sounds like an impasse to me.
Forum: Road Cycling
07-09-13, 03:57 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Maybe I'm wrong, but I'm really not getting that...

Maybe I'm wrong, but I'm really not getting that impression from more than a select few. ;)



Yes, I understand the subjective sensations in question. I just don't consider them to be accurate....
Forum: Road Cycling
07-09-13, 03:12 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

See post #186...

See post #186 (http://www.bikeforums.net/usertag.php?do=list&action=hash&hash=186) .
Forum: Road Cycling
07-09-13, 03:10 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Well.... • Every single graph I've seen,...

Well....

• Every single graph I've seen, including vector data when standing, indicates that no one actually applies power to the drivetrain on the upstroke. This includes data collected from a...
Forum: Road Cycling
07-09-13, 02:49 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

So Andy Pruitt, founder of the Boulder Center for...

So Andy Pruitt, founder of the Boulder Center for Sports Medicine, an Olympic trainer, who works on the Specialized BG gear, who has worked with pro teams like Saxo Bank, who has worked with...
Forum: Road Cycling
07-09-13, 02:27 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Yay, I seem to have found a public copy of the...

Yay, I seem to have found a public copy of the Korff paper. Have at it. ;)

http://img2.tapuz.co.il/forums/1_168859045.pdf

At the risk of oversimplifying, the key diagram is this one, drumroll...
Forum: Road Cycling
07-09-13, 11:58 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

I don't have any privileged access, nor do I...

I don't have any privileged access, nor do I control who studies what.

At this point, all I can say is "wait until pedal-based power meters are commercialized." Granted, most people on BF will...
Forum: Road Cycling
07-09-13, 09:14 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Yeah, you're hanging an awful lot on that...

Yeah, you're hanging an awful lot on that speculation. And ignoring all the other data, apparently. ;)

This point is now covered in my comments re: Burke.
Forum: Road Cycling
07-09-13, 09:12 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

I have no objection to a piston metaphor. Of...

I have no objection to a piston metaphor. Of course, metaphors aren't supposed to be hyper-literal, but whatever floats your boat. ;)
Forum: Road Cycling
07-09-13, 09:10 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Let me be even more specific. ;) • With the...

Let me be even more specific. ;)

• With the possible exception of a small cadre of elite sprinters: Everyone exerts some negative forces on the upstroke.
• This is (presumably) because you are...
Forum: Road Cycling
07-09-13, 08:57 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

That's odd, because I've cited numerous sources...

That's odd, because I've cited numerous sources for my beliefs. I also haven't referred to the Korff study in several recent posts.

Another source (not yet cited) is Edmund Burke:

More than...
Forum: Road Cycling
07-09-13, 06:50 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

For sprinting and racing, I recommend clipless. ...

For sprinting and racing, I recommend clipless. I use clipless. I am NOT anti-clipless.

Go back to my first post in this thread, #52...
Forum: Road Cycling
07-09-13, 06:37 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

It's a metaphor, not a literal assertion. It's...

It's a metaphor, not a literal assertion. It's apt, because:

• You are applying one burst of power per revolution.
• You are not applying consistent levels of power throughout the pedal stroke....
Forum: Road Cycling
07-08-13, 07:53 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

OK, I stand corrected. Well, here's...

OK, I stand corrected.



Well, here's the hitch. Any force that is used to lift your leg is force that doesn't make it to the drivetrain. If you need 100N to pull your leg up, and only happen...
Forum: Road Cycling
07-08-13, 09:29 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Must be a miscommunication -- I haven't discussed...

Must be a miscommunication -- I haven't discussed elliptical or oval chainrings in this thread. (As far as I know, the data on those is inconclusive.)



Just the actual power data from strain...
Forum: Road Cycling
07-05-13, 08:02 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

It was "obvious" that heavy objects fall faster...

It was "obvious" that heavy objects fall faster than light ones. Until Galileo actually bothered to test it. ;)



The biomechanics are certainly different. If you're curious: In terms of...
Forum: Road Cycling
07-05-13, 06:01 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

One-legged drills are useful, but the...

One-legged drills are useful, but the biomechanics are very different than a normal or optimal pedal stroke.

Again, you cannot tell what his happening in terms of power generation, or...
Forum: Road Cycling
07-05-13, 05:55 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Good grief. I do not have access to any...

Good grief.

I do not have access to any "secret evidence." I'm relaying what Pruitt has said, and I see no reason whatsoever to doubt it. Pruitt, again, heads up a top sports medicine and...
Forum: Road Cycling
07-04-13, 05:10 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

1) it's not a "strawman" 2) it's not that they do...

1) it's not a "strawman" 2) it's not that they do no work on the upstroke, it's that the effort goes into lifting your leg and 3) it was backed up by field observations.



In case you missed it,...
Forum: Road Cycling
07-04-13, 04:46 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

As far as I can tell, neither study is publicly...

As far as I can tell, neither study is publicly available. And I'm not giving out a Pubmed password. ;)

Despite your attempt to nit-pick the studies, the results are actually pretty clear: ...
Forum: Road Cycling
07-04-13, 09:30 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Yes, he's talking about pedaling techniques. ...

Yes, he's talking about pedaling techniques.

No, he is not talking about "steady state cruising." He's discussing the full range of riding circumstances, including track racing, climbing,...
Forum: Road Cycling
07-03-13, 10:00 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

You might need a little more than nit-picking a...

You might need a little more than nit-picking a few studies. (Especially as you don't seem to cite any conflicting data.)

Another source, by the way, is Andy Pruitt, one of the top cycling sports...
Forum: Road Cycling
07-03-13, 09:52 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

Oh, goodie. Would you care to calculate how...

Oh, goodie.

Would you care to calculate how much force is required to lift your leg? Or do you imagine that lifting 10% of your body's mass requires no energy whatsoever?



The reason to...
Forum: Road Cycling
07-03-13, 02:17 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

The OP is saying it (or something similar), which...

The OP is saying it (or something similar), which is why I'm trying to correct his misperception. ;)

The claim that "clipless means less fatigue" is a new one to me, and (again) I haven't seen an...
Forum: Road Cycling
07-03-13, 11:07 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

That doesn't mean you are actually applying...

That doesn't mean you are actually applying usable force to the drivetrain. It doesn't take a lot of force to create that sensation / subjective impression.



The amount of power that actually...
Forum: Road Cycling
07-03-13, 06:40 AM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

I've never seen a single scrap of evidence to...

I've never seen a single scrap of evidence to support this claim.



You use the same muscles, whether or not you use any foot retention.

Researchers and experts like Andy Pruitt have used...
Forum: Road Cycling
07-02-13, 10:01 PM
Replies: 307
Views: 20,629
Posted By Bacciagalupe

At the risk of taking this post seriously.... ...

At the risk of taking this post seriously....



No, you aren't. That's a myth.

Data from pedal-based power meters makes it very clear that you apply very little useable force on the upstroke...
Showing results 1 to 29 of 29


 
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