[allan.xperia]

allan.xperia on April 15, 2019 at 3:13 am · in reply to: ADS: slow uphill running vs. slow walking #20511

I assume that your uphill walking speed is faster than your uphill running speed at the same gradient and the same heart rate?

So it seems to me that you should be able to find a gradient where the choice is between running very slowly and walking at normal pace. Which means that your dilemma shouldn’t exist.

Am I missing something?

[allan.xperia]

allan.xperia on March 21, 2019 at 12:06 pm · in reply to: Best tests for AeT, or, why isn't HR drift covered in the new book #18858

We decided not to include the HR drift test in the new book because it requires one to have a Training Peaks account.

I am puzzled by this statement. I don’t see any need for Training Peaks.

Anyone can do a training session at constant intensity and calculate their heart rate drift during the session. No need for Training Peaks for that.

If the intensity is varied during the session, it becomes a bit more difficult, but in that particular situation, the Training Peaks method is rubbish anyway. As far as I know, they use Joe Friel’s method, which is based on an assumption that heart rate is proportional to training intensity. That is of course not the case, since our heart rate isn’t 0 at 0 training intensity. In that situation, I prefer to use my own correction for intensity. So again no need for Training Peaks.

[allan.xperia]

allan.xperia on February 21, 2019 at 2:46 pm · in reply to: Recommended mountaineering watches #16908

This summer while he was training for a marathon he was entering the interval workout into the watch from TP and he then just followed along. That’s cool but not so important for mountaineers.

Your 935 can do the same.

The 935 is more or less a Fenix 5 in another package.

[allan.xperia]

allan.xperia on January 14, 2019 at 3:32 pm · in reply to: How do I find the new articles on this site? #15928

Thank you for the info.

Good to know that the newest articles are the first in each category.

[allan.xperia]

allan.xperia on January 12, 2019 at 3:02 pm · in reply to: How do I find the new articles on this site? #15865

I know how to find all articles. It is the new articles I can’t find without working my way through the categories.

[allan.xperia]

allan.xperia on January 10, 2019 at 12:51 pm · in reply to: Pull Ups for noodle arms #15834

I use a program from http://www.50pullups.com/

They have programs based on current ability, right from 0 pullups to more than 40 pullups. Each program takes two weeks, after which you do a new test and either advance to the next program or go back and start over on your current program.

I started two months ago a bit over my level at the program for people who can currently do 6-8 pullups. Probably not very wise, but in the programs below that I would have to only do negatives which I was too proud to accept.

In the last session of my first two week round, I was supposed to do 5 sets with 4, 5, 4, 4 and 6 pullups. I only managed 4, 4, 2, 1 and 1 pullups. And I was resting on the floor between each pullup for a second or two.

Today, I did the last session of my current two week round. Still at the same 6-8 program, and still supposed to do 4, 5, 4, 4 and 6 pullups. I managed 4, 5, 4, 4 and 5. And in each set, I was fully hanging from the bar without resting on the floor between each pullup.

I have no idea how optimal these training programs are, compared to others. But they seem to work for me, albeit slowly. I could probably have had even faster progress if I had thrown away my proudness and started with one of the lower programs, doing negatives. Anyway, at an age of 51, without ever doing pullups earlier in my life, I am pretty satisfied.

[allan.xperia]

allan.xperia on December 23, 2018 at 5:28 pm · in reply to: Tinkering with LME Box Steps #15498

An idea for getting shorter rests. The gym owner may not agree…

[allan.xperia]

allan.xperia on November 12, 2018 at 3:21 am · in reply to: Stryd #14402

The Stryd also uses a barometric altimeter for calculating the additional power for going uphill, and in my limited experience it does it pretty well. I can keep my heart rate rather constant uphill by keeping power constant.

The problem is more with going steep downhill where the Stryd assumes that you use less power because of going downhill. Stryd has admitted that their model is wrong here because it doesn’t adequately model the power that is used for doing “brake work” downhill.

[allan.xperia]

allan.xperia on November 10, 2018 at 1:11 pm · in reply to: kid sleeping bag #14385

I have no experience on this, but I think you should be careful using the temperature ratings for adults.

My reasoning:
Small people have a higher surface to weight ratio. If their heat production is proportional to their weight (which is just something I assume), they will also have a higher surface to heat production ratio, so they will need more insulation to keep their body temperature up.

[allan.xperia]

allan.xperia on November 10, 2018 at 1:04 pm · in reply to: Stryd #14384

Even if you train for HR, the Stryd will often make it easier. I use one, and when running up and down slopes, it is much easier to keep within my heart rate targets when I keep an eye on power.

I think Scott Johnston has written somewhere in this forum that the Stryd shows wrong power when you walk very slowly up steep slopes. I can add that it also shows wrong power when walking very fast. When the walking pace is faster than approx. 7:30 minutes/km (12 minutes/mile), it seems to pass a threshold where the power will suddenly increase. And when the walking pace gets even faster, it passes another threshold where the power will suddenly decrease. This can be a little annoying if one uses fast walking for aerobic training.

[allan.xperia]

allan.xperia on October 31, 2018 at 11:35 am · in reply to: The myth of the waterproof shell #14216

There is such a thing as waterproof clothing. My Gore-Tex dry-suit is waterproof. I can be submerged in water, and no water will leak in.

But I have often been wondering if this Gore-Tex fabric has anything in common with the Gore-Tex fabric used for over-the-water clothing, except the name.

[allan.xperia]

allan.xperia on October 18, 2018 at 2:08 am · in reply to: Heart Rate for Uphill Weighted Muscular Endurance #14013

A slope in % is the ratio between the vertical distance travelled and the horisontal distance travelled.

For slight slopes there is an almost proportional relationship between percent and degrees:
1% = 0.573°
10% = 5.71°

…but for steeper slopes, the relationship becomes more non-linear (a 90° slope – a vertical wall – has an infinite slope in percent):
6% = 3.43°
60% = 31.0°
173.2% = 60.0°

So a 60° slope is almost twice as steep as a 60% slope when comparing degrees, and almost 3 times as steep when comparing percent.

[allan.xperia]

allan.xperia on October 9, 2018 at 2:19 pm · in reply to: TftNA reprint? #13860

Thank you, both of you.

I found the new book on amazon.co.uk. It is not open for preorder yet, but at least I could add it to my wish list.

It is not shipping which is the problem. Customs handling when importing from the US costs a fortune. So I will stick to shops within the EU.