Search found 5953 matches

by Audax67
15 Mar 2024, 4:30pm
Forum: Health and fitness
Topic: Midshaft Clavicle non union
Replies: 6
Views: 316

Re: Midshaft Clavicle non union

In 2002 I had a difference of opinion with a post growing out of our local cycle path, and the intern at emergency insisted there was only one fracture where there were in fact two. Long story short, once the damn thing had knitted it was a bit bent and a centimetre shorter. The ortho surgeon offered to break it again and plate it straight, but since I wanted to get back on the bike I said what the hell, I'll live with it.

I still get pain in the shoulder-blade because it's pulled out of line, and I can't carry a weight for long on that side; and in fact it's hurting now from over-zealous mousing. My advice these days is always accept the longer wait to get back: it's an investment.
by Audax67
13 Mar 2024, 9:56am
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

Nearholmer wrote: 12 Mar 2024, 7:04pm
hours left me with pretty similar fatigue and chest pain the day after to that which I had from a heavy cycle ride
You get chest pain from a heavy bike ride?

That wasn’t what I meant by “a bit whacked”, I was talking about not being up for a load of exercise, a bit weary, not actual pain.
Three possible sources in my inexpert experience: inflammation due to heart hammering away at inside of rib cage & so forth, strain of rib cage from heaving on bars, and heart problems. Doc told me once that if I could modify the pain by pressing on it or moving it, it wasn't cardiac.
by Audax67
13 Mar 2024, 9:50am
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

axel_knutt wrote: 12 Mar 2024, 5:27pm
Nearholmer wrote: 12 Mar 2024, 11:59am But what causes a step change at 60
I used to see much the same at younger ages.
It used to be 40. Remember "Phyllosan fortifies the over-forties"? My wife can remember her mum telling her to go fetch her jumper because she was over 40 and her legs weren't so great any more. She (my wife) is 78 and has just left for a run/walk before the rain starts again.

Me, I'd love to be 60 again.
by Audax67
13 Mar 2024, 9:14am
Forum: Bikes & Bits – Technical section
Topic: Replacing fully concealed cables
Replies: 33
Views: 2622

Re: Replacing fully concealed cables

I get pissëd off more than enough leading cables under the bar tape. Used to love the old STIs with the gear cable sprouting out the side; they provided an alternative place to rest your thumbs on long rides. Banished in the marginal interest of "aero". Hello, here's my old Audax buddy's laundry:

Image

Halfway through Strasbourg-Perpignan, that was. How many fancy integrated bars/stem combos with internal tripes could you dry your socks on?

This month, too, I've changed stems on my bike twice since I'm getting shorter in my oldage (not a typo). Imagine doing that with all that internally-threaded gubbins. (Actually, I'm just imagining my own internal gubbins getting threaded externally. Not a pretty sight.)

The current idiocy seems to be driven by the idea that we should all aspire to be boy racers with our noses on the bars and our buttocks halfway to Jupiter. Most of us don't.

<end of rant>
by Audax67
11 Mar 2024, 12:56pm
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

Happens all the time here, but it's easier to get an answer by asking a question as a new topic than hunting through 40pp that might not provide one.
by Audax67
11 Mar 2024, 10:10am
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

ed.lazda wrote: 11 Mar 2024, 9:05am I'd ignore any formula that claims to provide your HR-max. These are based on population data -- averages -- and don't really apply to individuals. I'm 69 and my HR-max is about 172.
Certainly: they're ballpark figures.
I'm not sure if there's clear evidence that exercising up to HR-max carries a risk of cardiac events
I'm not sure about causing - in fact, I'd doubt it - but it can be pretty good at showing up defects, particularly in cold weather. My first heart attack was in January 2016: my log entry reads:
Tootle to see if heart works. It does, HRM doesn't but oesophagitis fierce.

ETA: EEEJIT. It wasn't oesophagitis, it was a heart attack.
It was 4°C at the time. Turned out to be a blocked right marginal coronary artery.

ETA: re high heart rate causing cardiac events, there's always the possibility that a bit of plaque might be dislodged and block something. Depends on how much plaque you have, and you can't really know that without targeted examinations.
by Audax67
10 Mar 2024, 5:13pm
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

Psamathe wrote: 10 Mar 2024, 3:47pm This prompted me to do some online searches and I found:
Age-predicted maximal heart rate revisited
from https://pubmed.ncbi.nlm.nih.gov/11153730/ (Tanaka) which suggests the 208-(age*0.7)

From bicycling.com an article "Understand What’s Fact and Fiction When It Comes to Calculating Max Heart Rate" https://www.bicycling.com/training/a200 ... hs-busted/ (no idea about who they are but there are links to some sources).

And I have no idea about this site (so I'd normally ignore it purely because I don't know about them) but they give a few other calculations (incl. different formulae for women) https://www.verywellfit.com/maximum-heart-rate-1231221. I'm always over cautious about medical stuff on internet from sites where I don't know their reputation.
The NIH site looks familiar, could have been where I got it. And the "Factors that affect MHR" section on the other site talks sense - good find.

One gloomy realisation is that while MHR decreases with age, the power and therefore BPM required to get up any given climb seems to remain roughly the same, so that eventually the average heart rate you need for any given performance will be greater than your theoretical max.
E.g. when I was 70 I did a particular col with an average BPM of 141, which is 98.6% of my max BPM these days (according to Polar). OK, there are a couple of holes in that, e.g. I could always go up it more slowly (or could I? I was doing 8 kph in the steep bits and at 6 kph I'm all over the road) or I could lighten the bike, but gains would be marginal so I believe my hypothesis is pretty well correct. This is why I ride with a motor these days.
by Audax67
10 Mar 2024, 3:41pm
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

I've done cardiac stress tests every year since 2007, on a stationary bike and increasing in resistance by 50W every 2 minutes. The rules here don't allow a cardiologist to take you over the Holy Polar limit, and the last couple I did he called it off a bit below it, which I found a bit boring. IME when you get up to your max output wattage your legs complaining take all your attention.

Funny thing: at the end of the test he always asked me why I stopped pedalling, was it lack of breath or sore legs. But it was never me who stopped the test, it was him that said OK, enough. Possibly as cyclists we're used to sore legs and can ignore them.
by Audax67
10 Mar 2024, 2:26pm
Forum: Health and fitness
Topic: Max Heart Rate (Setting & Meaning)
Replies: 42
Views: 1670

Re: Max Heart Rate (Setting & Meaning)

Firstly, I've always interpreted the theoretical max heart rate as the rate a healthy human heart should be able to attain rather than a limiting maximum rate that shouldn't be exceeded.

Secondly, different authorities use different formulae to derive the max, e.g.

a. Classical: 220-age of subject. I believe this comes from a couple of cardiologists Polar consulted back when the world was merely middle-aged, and is the one modern medics will use to castigate you for exceeding.

b. Precise for subjects over 40: 207 - (age x 0.7)

c. Very precise for the older subject: 211 - (age x 0.64)

Can't remember the sources for the last two: I did some Googling when I was writing a program to analyse GPX files around 10 years ago and they're what I found and incorporated. In my case, my max theoretical rates from the above are

a: 143 bpm;
b: 153 bpm;
c: 162 bpm.

My max on yesterday's ride was 159 so I suspect formula c is probably the most representative. Curiously enough, this instance occurred while I was having a minor altercation with a cow in a car so I suppose adrenalin has more effect than exercise alone. YMMV
by Audax67
8 Mar 2024, 1:29pm
Forum: The Tea Shop
Topic: Put a lid on it
Replies: 11
Views: 667

Re: Put a lid on it

Because the wind likes steering the bike too.

I once had a flat-spoked wheel that could be interesting on fast descents in a strong wind. A disc would be 'orrible.
by Audax67
5 Mar 2024, 9:29am
Forum: Bikes & Bits – Technical section
Topic: Choosing puncture resistant tyres on a new bike before buying
Replies: 39
Views: 1843

Re: Choosing puncture resistant tyres on a new bike before buying

thirdcrank wrote: 4 Mar 2024, 1:49pm I'm not suggesting that slime + no flat tyres = numerous punctures sealed by the slime. OTOH, if the slime does work in the way claimed, then I cannot understand how the slime can be topped up. How would the slime already in the tube be able to tell the difference between the open valve and a puncture?
Never tried it so I've no idea. They do purvey a product called Thru-Core Emergency sealant that they say can be put in with the valve core in place.

Gee, one more thing in the bar bag, what fun.
by Audax67
4 Mar 2024, 1:26pm
Forum: Bikes & Bits – Technical section
Topic: Choosing puncture resistant tyres on a new bike before buying
Replies: 39
Views: 1843

Re: Choosing puncture resistant tyres on a new bike before buying

thirdcrank wrote: 4 Mar 2024, 9:01am IMO it's important not to confuse flat tyres with punctures. With slime and similar products you might be having any number of punctures which are being immediately sealed.
That's right, but when I replaced a Durano because of tread wear there were no green splats inside. In any case, the Slimey people suggest adding more gunge after a couple of years, which I have not done, so in essence I'm riding without these days.
by Audax67
3 Mar 2024, 4:25pm
Forum: Bikes & Bits – Technical section
Topic: Choosing puncture resistant tyres on a new bike before buying
Replies: 39
Views: 1843

Re: Choosing puncture resistant tyres on a new bike before buying

My last 14,000 km have been done on Schwalbe Durano 25mm tyres with Slime tubes. During that time I have had 2 flats, both of them snakebites from hefty bumps. With the extra layer of rubber they're also very comfortable to ride on.

TBH, I don't think the Slime tubes are necessary.
by Audax67
3 Mar 2024, 9:23am
Forum: Does anyone know … ?
Topic: Where can I get a cleaning brush
Replies: 27
Views: 1338

Re: Where can I get a cleaning brush

There's one in our cludge nobody's using right now...
by Audax67
3 Mar 2024, 9:22am
Forum: Health and fitness
Topic: As a cyclist how many cups of water do you drink daily?
Replies: 28
Views: 2319

Re: As a cyclist how many cups of water do you drink daily?

3.7 litres is a hell of a lot. AFAIK the standard recommendation is 1.5L/day. Cycling in summer I get through a hell of a lot* per day, or rather it gets through me. Between meals I down about a litre on a non-cycling day, plus another litre with meals.

* scientific measure about as accurate as "cups".