Cold weather affects performance??

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Aggerdoo
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Cold weather affects performance??

Postby Aggerdoo » Tue Dec 11, 2012 11:59 am

Hi

Right I know this probably is a completely stupid question to be asking but I've noticed recently that I've been a bit slower and not found it quite as easy to do a couple of climbs near me as I did back in the summer months. I have not changed my bike or anything and the only thing i can put it down to is it being cold (or me eating too much comfort food to keep warm). My legs seem to feel the lactic acid sooner than back in the summer. I've been out the last couple of weekends and tried to wrap up warm, each time i've incresed the layers i had on, but still felt a bit of a chill.

Is it the cold thats getting to me or do i just need to man up and cycle harder and faster?

Cheers

Aggerdoo

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Herbsman
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Re: Cold weather affects performance??

Postby Herbsman » Tue Dec 11, 2012 12:11 pm


jibberjim
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Re: Cold weather affects performance??

Postby jibberjim » Tue Dec 11, 2012 12:12 pm

You wear more so you're heavier.
The road and tyres are colder so they roll slower.
The air is colder so it's denser so it's harder to push it out of the way.
Performance does tend to be worse when it's cold.

Yes you're slower in winter, regardless of your fitness.
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JGSI
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Re: Cold weather affects performance??

Postby JGSI » Tue Dec 11, 2012 12:18 pm

http://app.strava.com/rides/31952007 is my cold weather ride today... was planning further but when ice started to form inside water bottle headed for home... was feeling the cold air too much on my chest anyways
Riding outside is opportunist, nice sunny morning, just take it easy, relax as best you can..

Aggerdoo
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Re: Cold weather affects performance??

Postby Aggerdoo » Tue Dec 11, 2012 12:22 pm

So it's not just me, thats good to hear!
So for winter riding would you say just go at a speed that feels comfortable and don't try to race my summer speeds/times? I undfortunately don't have a turbo trainer and therefore can only use the stationary bike in the gym (but thats frankly a bit like trying to immitate riding a horse by sitting on a rocking horse)
What do you all do in winter?

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 12:24 pm

Just accept you will be slower, and aslong as it's not dangerous, get on with it :)

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JGSI
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Re: Cold weather affects performance??

Postby JGSI » Tue Dec 11, 2012 12:28 pm

Aggerdoo wrote:So it's not just me, thats good to hear!
So for winter riding would you say just go at a speed that feels comfortable and don't try to race my summer speeds/times? I undfortunately don't have a turbo trainer and therefore can only use the stationary bike in the gym (but thats frankly a bit like trying to immitate riding a horse by sitting on a rocking horse)
What do you all do in winter?


Turbo + TrainerRoad :D

Aggerdoo
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Re: Cold weather affects performance??

Postby Aggerdoo » Tue Dec 11, 2012 12:28 pm

Sounds like a plan, I wouldnt go out if it was super icey as I've had a close shave when a car skidded in front of me before thought I was going to have to dive for the hedge, needless to say it's made me a lot more cautious. I'm hoping to get a new Road bike at Christmas so I for one am not hoping for a fully white christmas so I can go for an xmas morning ride to make room for Turkey and xmas pudding!

Cheers for your help/advice it's put my mind at rest and repaired my ego

Trev The Rev
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Re: Cold weather affects performance??

Postby Trev The Rev » Tue Dec 11, 2012 13:00 pm

As well as more weight & drag with more clothes there is more drag in the cold and more rolling resistance.

Your lungs are not as efficient in cold weather so you will have to try a little harder to output the same power.

This can seriously mess up your power meter data.

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 13:21 pm

Trev The Rev wrote:This can seriously mess up your power meter data.


Yes, I agree, it does, don't forget the affect the cold has on the metal components of power meters too, plus when it's colder the transmission of electrical signals is slower, all leads to problems with power data in the winter.

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GiantMike
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Re: Cold weather affects performance??

Postby GiantMike » Tue Dec 11, 2012 13:46 pm

Trev The Rev wrote:Your lungs are not as efficient in cold weather so you will have to try a little harder to output the same power.

This can seriously mess up your power meter data.


The power data is still correct, it's just that the effort:power ratio has changed

danowat wrote:
Trev The Rev wrote:This can seriously mess up your power meter data.


Yes, I agree, it does, don't forget the affect the cold has on the metal components of power meters too, plus when it's colder the transmission of electrical signals is slower, all leads to problems with power data in the winter.


I thought a temperature-calibrated power meter removed temperature-related inaccuracies.
my power improvement experiment blog

Rule number 100: It's your bike and your money and your time; do what you like with it and ignore other peoples' rules. Except this one.

Trev The Rev
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Re: Cold weather affects performance??

Postby Trev The Rev » Tue Dec 11, 2012 13:56 pm

GiantMike wrote:
The power data is still correct, it's just that the effort:power ratio has changed



I thought a temperature-calibrated power meter removed temperature-related inaccuracies.


That is my point, effort changes so training stress changes but the power is the same so does not account for the increased training stress. Temperature affects performance - take a very hot humid day, 300 watts is much harder than on a mild fresh day. Power = 300 watts both days but you worked far harder on the hot humid day to produce that power.

Strain gauges are affected by temperature, but if you zero the power meter say when you go from warm garage to below freezing outside you should be OK.

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 14:03 pm

I find if I can get my cadence up to 110rpm and leave it there, it stops the cold affecting my power meter, it keeps it warm, but I have to be very accurate, and I can over heat it if I got much higher than 110rpm.

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GiantMike
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Re: Cold weather affects performance??

Postby GiantMike » Tue Dec 11, 2012 14:11 pm

danowat wrote:I find if I can't get my cadence up to 110rpm and leave it there, it stops the cold affecting my power meter, it keeps it warm, but I have to be very accurate, and I can over heat it if I got much higher than 110rpm.


What powermeter do you have? What effects do you observe if you don't maintain a cadence of 110rpm+? What happens when you overheat your powermeter?

I've ridden with my powertap through hot summer days and freezing cold cx races and have never noticed any issues. My cadence is usually 85-90rpm.
my power improvement experiment blog

Rule number 100: It's your bike and your money and your time; do what you like with it and ignore other peoples' rules. Except this one.

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 14:14 pm

What powermeter do you have? Carlos Fandango SRQuarqPT 3.2

What effects do you observe if you don't maintain a cadence of 110rpm+? 100w power drop

What happens when you overheat your powermeter? Smoke, then flames, then melted metal


(BTW,all this may, or may not, be true, I am not sure.)

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GiantMike
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Re: Cold weather affects performance??

Postby GiantMike » Tue Dec 11, 2012 14:23 pm

danowat wrote:What powermeter do you have? Carlos Fandango SRQuarqPT 3.2

What effects do you observe if you don't maintain a cadence of 110rpm+? 100w power drop

What happens when you overheat your powermeter? Smoke, then flames, then melted metal


(BTW,all this may, or may not, be true, I am not sure.)


I was only asking because if I bought a powermeter that I could only use at 110rpm (+/- 5rpm) or it didn't work I'd take it back to the shop. It might even be worthy of a 'Don't buy a Carlos Fandango SRQuarqPT 3.2 because they're sh!t' post. You raised a point about a practically unusable powermeter.

MInd you, I guess that the heat from the fireball from pedalling at 120rpm would keep you warm on these cold winter days. :wink:
my power improvement experiment blog

Rule number 100: It's your bike and your money and your time; do what you like with it and ignore other peoples' rules. Except this one.

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 14:24 pm

I'd steer clear of anything branded "Carlos Fandango" to be honest.

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GiantMike
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Re: Cold weather affects performance??

Postby GiantMike » Tue Dec 11, 2012 14:36 pm

danowat wrote:I'd steer clear of anything branded "Carlos Fandango" to be honest.


Image

Is this what happens? I smell seriously-flawed power data!!!
my power improvement experiment blog

Rule number 100: It's your bike and your money and your time; do what you like with it and ignore other peoples' rules. Except this one.

danowat
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Re: Cold weather affects performance??

Postby danowat » Tue Dec 11, 2012 14:37 pm

GiantMike wrote:
danowat wrote:I'd steer clear of anything branded "Carlos Fandango" to be honest.


Image

Is this what happens? I smell seriously-flawed power data!!!


Similar, except I am not vain, or quick, enough to own a Cervelo.

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Dess1e
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Re: Cold weather affects performance??

Postby Dess1e » Tue Dec 11, 2012 20:09 pm

danowat wrote:
Trev The Rev wrote:This can seriously mess up your power meter data.


Yes, I agree, it does, don't forget the affect the cold has on the metal components of power meters too, plus when it's colder the transmission of electrical signals is slower, all leads to problems with power data in the winter.


What other physical laws are the opposite in your universe?


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