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Search: Posts Made By: mr_pedro
Showing results 1 to 50 of 620
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05-26-21, 05:58 AM
Replies: 30
Views: 1,580
Posted By mr_pedro

I doubt that any Calorie calculation would take...

I doubt that any Calorie calculation would take that into account. If power data is used, it is just translating total amount of work in kJ to a total amount of energie from food in kcalorie. This...
05-12-21, 08:17 AM
Replies: 25
Views: 972
Posted By mr_pedro

You can get the same intensity on less steep...

You can get the same intensity on less steep climbs or even on flat roads. It just means you need to go faster. Difference is that on a steep hill you need to apply the power or you fall over, while...
05-11-21, 02:09 PM
Replies: 64
Views: 4,602
Posted By mr_pedro

Also, you don't want to eat during the ride even...

Also, you don't want to eat during the ride even close to what you burn during the ride. Because if you are even remotely in shape, then you are able to burn far more than what you can digest during...
05-10-21, 04:43 AM
Replies: 68
Views: 1,979
Posted By mr_pedro

Not much drafting of e-bikes here in the...

Not much drafting of e-bikes here in the Netherlands. Over here e-bikes are either restricted to 17 mph or they are of the speedpedelec type that can do 30 mph. So they are either too slow or too...
05-10-21, 04:32 AM
Replies: 73
Views: 3,395
Posted By mr_pedro

If I was in this situation, I would place my bike...

If I was in this situation, I would place my bike on the left third of the lane and then while turning left I would move back to the right part of the lane. Because this lane is also for going...
05-10-21, 04:04 AM
Replies: 64
Views: 4,602
Posted By mr_pedro

And also 275W avg for 5-6 hours is elite pro...

And also 275W avg for 5-6 hours is elite pro cycling territory.
05-10-21, 04:00 AM
Replies: 64
Views: 4,602
Posted By mr_pedro

The efficiency thing is as much a problem for...

The efficiency thing is as much a problem for Strava estimates as it is for power meter results. Both calorie estimates need to make an assumption of the human efficiency in producing power.
05-07-21, 04:13 AM
Replies: 7
Views: 897
Posted By mr_pedro

With longer cranks you need to bring the saddle...

With longer cranks you need to bring the saddle and handlebar down to be able to reach the pedal in bottom position in the same way.
That will give less wind resistance since you are lower on the...
04-27-21, 10:16 AM
Replies: 11
Views: 1,151
Posted By mr_pedro

You can use it to for example for pacing yourself...

You can use it to for example for pacing yourself up a long climb or to train at a particular intensity.
For this you need to know your heart rate zones. One test is to go as hard as possible at a...
03-04-21, 02:44 PM
Replies: 20
Views: 1,502
Posted By mr_pedro

Looks like the hard thing with fixed trainers is...

Looks like the hard thing with fixed trainers is finding one that is controllable. Otherwise any recumbent trainer will do if a speedsensor can be attached, or if pedals with power meter can be...
03-04-21, 12:15 PM
Replies: 20
Views: 1,502
Posted By mr_pedro

Looks like people can just attach some recumbents...

Looks like people can just attach some recumbents straight on a Wahoo Kickr, no MacGyver skills needed:

Zwift on a VTX - BentRider Online Forums...
03-04-21, 10:06 AM
Replies: 44
Views: 4,998
Posted By mr_pedro

Gotcha, always good to stay hydrated. I used to...

Gotcha, always good to stay hydrated.
I used to always need a towel to cover the bike and although I had a fan, after the warming up sweat would start dripping continuously for the threshold and...
03-04-21, 04:58 AM
Replies: 44
Views: 4,998
Posted By mr_pedro

If you need to drink that much more water on the...

If you need to drink that much more water on the trainer because of much more sweating, perhaps you could look into extra ventilation? Ideally there is not a pool of sweat on the ground afterwards.
03-04-21, 04:55 AM
Replies: 30
Views: 3,418
Posted By mr_pedro

It is pretty cool. And it is not just about the...

It is pretty cool. And it is not just about the interval intensities, but the entire training program that is determined by ML.
Automatically adjusting every workout depending on performance or if...
03-03-21, 11:48 PM
Replies: 30
Views: 3,418
Posted By mr_pedro

The ramp test is not just a max test over a short...

The ramp test is not just a max test over a short interval to estimate your longer duration power. It actually takes more like 20 min to do and exhausts the anaerobic system in the process. It varies...
03-03-21, 08:05 AM
Replies: 20
Views: 1,502
Posted By mr_pedro

The most low tech solution is if you can attach a...

The most low tech solution is if you can attach a Bluetooth / Ant+ speed sensor to your indoor bike. This means that Rouvy or Zwift won’t be able to control the resistance, but it will move you along...
03-02-21, 11:04 PM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

ll

Well, it is exactly that argument that the Dutch cycling federation makes for not promoting helmet wear for regular daily cycling. The claim is even that the health benefits for the entire population...
03-02-21, 10:17 PM
Replies: 54
Views: 8,276
Posted By mr_pedro

That comment is so far off, you either...

That comment is so far off, you either misinterpreted my comment or you don't know what you are talking about.


I am doing a hard ride for 1-2 hours burning between 800-1600 Cal, at most two days...
03-02-21, 03:57 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

Regarding your point D, the downside to focusing...

Regarding your point D, the downside to focusing on helmet usage is that the underlying premise is always that cycling is a dangerous activity. That discourages people from using their bikes for...
03-02-21, 12:18 AM
Replies: 17
Views: 1,583
Posted By mr_pedro

Do you still want Rouvy to control the resistance...

Do you still want Rouvy to control the resistance of the bike? How would that work if the video is not at the same spot you are?
If the video is decoupled from your power output on the bike, isn't...
03-01-21, 11:59 PM
Replies: 54
Views: 8,276
Posted By mr_pedro

I have cycled a lot of miles while fasted and it...

I have cycled a lot of miles while fasted and it feels great. I only do it for my slow rides though. For any effort longer than an hour or so at anything close to your limits, you start to need...
02-28-21, 11:38 PM
Replies: 122
Views: 5,772
Posted By mr_pedro

That might not say what you think it is. It does...

That might not say what you think it is. It does not mean that people are now expected to live those 1 or 3 years shorter.

Main reason is that the higher mortality experienced in the last year is...
02-27-21, 01:26 PM
Replies: 7
Views: 1,294
Posted By mr_pedro

It sounds like the future. Most likely at the...

It sounds like the future. Most likely at the introduction of TR's AT, a good coach will be able to provide better programs. But with time, I have no doubt that a machine learning algorithm will be...
02-26-21, 02:45 PM
Replies: 46
Views: 4,345
Posted By mr_pedro

Our body's cooling mechanism when hot is to bring...

Our body's cooling mechanism when hot is to bring blood close to the surface of the skin and let evaporating sweat extract heat.
Problem is that blood is also responsible to bring oxygen to the...
02-24-21, 02:05 AM
Replies: 18
Views: 956
Posted By mr_pedro

Most likely the Power meter is closer to the...

Most likely the Power meter is closer to the right value. It might be off by 1%-2%, but Zwift power can potentially be off by 25%-50%.

It should be fairly easy to differentiate between cruising at...
02-23-21, 09:32 PM
Replies: 44
Views: 4,998
Posted By mr_pedro

Indeed, all depends how intense the ride. For...

Indeed, all depends how intense the ride. For most rides up to 2 hours it is not strictly needed to take carbs, but it makes it so much easier to go hard.

On the harder workouts, that for me can...
02-23-21, 04:10 PM
Replies: 72
Views: 10,316
Posted By mr_pedro

The pain cave currently looks like this: ...

The pain cave currently looks like this:
https://cimg3.ibsrv.net/gimg/bikeforums.net-vbulletin/2000x1504/20210215_213621_l_9b71a28b96b1762a966ff5ee0df75f1e00e05060.jpg
02-12-21, 05:24 PM
Replies: 90
Views: 8,518
Posted By mr_pedro

Yes, just the taste of carbs in your mouth tells...

Yes, just the taste of carbs in your mouth tells your body carbs are on the way and it releases some of the glycogen reserves that it is hanging on to to prevent total depletion.
02-12-21, 03:28 PM
Replies: 90
Views: 8,518
Posted By mr_pedro

I have been researching and experimenting lately...

I have been researching and experimenting lately with fueling during work out. Regarding your calculations on how much glycogen you have stored and how much you are burning, the glycogen supply in...
02-12-21, 02:25 PM
Replies: 16
Views: 777
Posted By mr_pedro

To estimate your FTP you need to take average...

To estimate your FTP you need to take average power. Normalized power is a measure for how much stress you incurred.
If Normalized Power is much higher than average power, it does mean you could...
12-26-20, 04:18 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

We have experienced the same increase in traffic...

We have experienced the same increase in traffic sinds the 50s, it does require city planning to achieve this. For example when I drive home, the largest part of the journey is on the highway and...
12-26-20, 02:49 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

Pedal Smoothness (PS) is defined as the maximum...

Pedal Smoothness (PS) is defined as the maximum torque as a percentage of the average torque over a full pedal stroke. A PS of 100% would give a perfect circular polar plot of torque instead of the...
12-25-20, 10:14 PM
Replies: 31
Views: 1,669
Posted By mr_pedro

Perhaps your power output becomes more volatile...

Perhaps your power output becomes more volatile at higher levels?

I am using Trainerroad, in this particular workout, the intervals are at sweet spot (88%-94% FTP), and target power moves a bit in...
12-25-20, 10:03 PM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

When I was living in Baltimore there was a...

When I was living in Baltimore there was a pedestrian crossing with traffic lights downtown, the streets were one way for cars and after 30 seconds of green light for pedestrians the turning cars on...
12-25-20, 08:47 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

Per capita NL has 4~5 times more cycling deaths...

Per capita NL has 4~5 times more cycling deaths than the US. And even without exact exposure data for the US it is clear to see that the Americans cycle far less than 4 or 5 times what the Dutch do....
12-25-20, 03:27 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

Yes regularly you will find two strips across the...

Yes regularly you will find two strips across the bike path about 3 ft apart. This is used to measure speed and count the bicycles passing.

For example in this article the speeds between provinces...
12-25-20, 02:01 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

Sure, that is the difference between measuring...

Sure, that is the difference between measuring exposure by time or by distance travelled. Both are reasonable measures. Using time would only skew results towards more dangerous in US as speeds in NL...
12-25-20, 01:11 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

The way your ERG mode is behaving is certainly...

The way your ERG mode is behaving is certainly different from mine. In the graph below it looks like the power dropped as your cadence went down, but then power goes way up above target as the...
12-25-20, 01:02 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

The main reason is for consistent figures. If you...

The main reason is for consistent figures. If you only use power on the trainer, you mostly want it to be precise and accuracy is more a nice to have. So when you also have a power meter to use...
12-25-20, 12:41 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

What you are describing is the balancing of left...

What you are describing is the balancing of left right. What is happening as the pedals go round is that every foot has a phase when it is applying tangental force to the pedal in the right direction...
12-24-20, 11:47 PM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

:) I actually know what a confidence interval is...

:) I actually know what a confidence interval is and you said the opposite of what you mean, i.e. small confidence intervals imply a very high degree of certainty.

But since we donít have much US...
12-24-20, 03:52 PM
Replies: 6
Views: 676
Posted By mr_pedro

You could also use the seconds hand to ride at 60...

You could also use the seconds hand to ride at 60 rpm, so one full revolution of one of the pedals every second. And note the speed. You can now multiply that speed with eg 70/60 to get the speed at...
12-24-20, 12:54 AM
Replies: 3,317
Views: 341,536
Posted By mr_pedro

The average trip distance in NL is about 3km. ...

The average trip distance in NL is about 3km.
Another difference is that I suspect the US to have a larger fraction of recreational rides done in parks.

Maybe we can look at it from a different...
12-23-20, 10:38 PM
Replies: 31
Views: 1,669
Posted By mr_pedro

I also have the impression the smoother lines...

I also have the impression the smoother lines when data from the Kickr is used is because the Kickr is transmitting a rolling average, because it does not feel any different.
What should help is...
12-23-20, 09:20 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

Thatís in ERG mode, because then you have a...

Thatís in ERG mode, because then you have a target power and can clearly see how fast and how stable it stays around that value.

Using a third party power meter to control the trainer is called...
12-23-20, 04:38 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

When I change the to a lower gear with the same...

When I change the to a lower gear with the same power output, reducing the speed and increasing the drag, I see much higher crank accelerations outside and these can now be replicated on my...
12-23-20, 02:49 AM
Replies: 31
Views: 1,669
Posted By mr_pedro

Yes that is plausible, ERG lag has the added...

Yes that is plausible, ERG lag has the added component of reacting to unpredictable changes in cadence, while flywheel adjustments are much more predictable. Maybe just a feeling that the level of...
12-22-20, 09:50 PM
Replies: 31
Views: 1,669
Posted By mr_pedro

I was wondering that. Do you have any links to...

I was wondering that. Do you have any links to materials with further details?
I think that is what they mean at Tacx when they say to have a simulated flywheel.

The trainer would need to adjust...
12-22-20, 09:11 PM
Replies: 31
Views: 1,669
Posted By mr_pedro

These are micro accelerations happening a couple...

These are micro accelerations happening a couple of times throughout each stroke as you move in and out of the power phase. It follows from Newtonís laws because the drag force is always there while...
12-22-20, 08:57 PM
Replies: 31
Views: 1,669
Posted By mr_pedro

So I am assuming a constant speed and constant...

So I am assuming a constant speed and constant cadence. However, the acceleration and deceleration is because we are not able to apply constant force on the pedals all way round the pedal stroke,...
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