heart rate/cadence info

NeedMoreGears

FWIW my theoretical max is somewhere between 172 (220-age/Haskell) to 169 (206.3-0.77age/Londeree) or even 182 (214-0.5age +0.11weight / Barry). So take your pick as to what formula you like best! It appears that these estimation methods have a standard deviation of around 10-12 for say a 40 year old.

Generally I have found that I average around 145 for an hour (working as hard as I can) - this would usually give me an average flat speed of 30kph. 162 is typical five minutes max having warmed up beforehand. The highest I have ever seen it was 168. Resting 46.

When I am running all those rates tend to be a bit higher, except for the max. It seems max is max regardless of the physical activity for me.

I typcially try to keep an eye on heart rate during a sportive or similar and aim not get above 140 or so unless I'm climbing (then it's a question of just getting up the hill). This type of average rate seems to be a good mix of effort and endurance for me.

Cadence - typically 90 or so, less on steeper hills

TinyExplosions

The max I've seen is 201, when being chased by a dog on the Virginia 300 -afaic that's my max (till I hit higher!)

doozerie

TinyExplosions wrote: »

The max I've seen is 201, when being chased by a dog on the Virginia 300 -afaic that's my max (till I hit higher!)

...till you meet a bigger dog!

macnab

TinyExplosions wrote: »

The max I've seen is 201, when being chased by a dog on the Virginia 300 -afaic that's my max (till I hit higher!)

I dont think that counts as a scientific result:D but next time let him catch you and that might put you closer to a true value:eek:

TinyExplosions

doozerie wrote: »

...till you meet a bigger dog!

macnab wrote: »

I dont think that counts as a scientific result:D but next time let him catch you and that might put you closer to a true value:eek:

The bastard came out when I was going up a hill, and not feeling particularly speedy -gave me quite a startle! (it must have if the boards kipure TT didn't push my heart rate higher!

smacl

Inquitus wrote: »

Indeed but I assume the HR at any given point in time on the Garmin is measured as 60/(Time beat current beat in seconds - Time previous beat in seconds) this would allow it to register a max HR based merely on 2 beats of data no, which may not accurately reflect Max HR?

You'd need to write to Garmin to confirm this assumption. My guess is that newer kit will take measurements averaged over more than two beats, to remove the necessity to detect the precise mid-point of the beat, and reject spurious readings on the fly to cover for measurement / sensor errors. Using a moving window averaging the last 3-5 beats seems more sensible.

It may depend a fair bit on the equipment. I use an older Timex HRM, and the data is full of spikes and bum readings. The HRMs on the machines I use at the gym seem to provide far more consistent results.

Inquitus

smacl wrote: »

You'd need to write to Garmin to confirm this assumption. My guess is that newer kit will take measurements averaged over more than two beats, to remove the necessity to detect the precise mid-point of the beat, and reject spurious readings on the fly to cover for measurement / sensor errors. Using a moving window averaging the last 3-5 beats seems more sensible.

Good point.

doozerie

Inquitus wrote:

Good point.

It's only a single point though. We'll need a few more points which we can then average to determine whether the goodness of this point was an anomaly or not.

...or maybe I'm thinking about this too much.

Inquitus

doozerie wrote: »

It's only a single point though. We'll need a few more points which we can then average to determine whether the goodness of this point was an anomaly or not.

...or maybe I'm thinking about this too much.

I had a look at the xml in the .tcx file, and Garmin just writes a HR every second when it logs its trackpoints, so it's not possible to discern the underlying calculation. I presume Smacl is right in his assertion that its an algorithm that uses at least 5 odd datapoints to avoid anomalies being reported