High heart rate at the end of long ride

[philinmerthyr]

I did a 50 mile ride this morning. I took it fairly easy and kept my cadence around 80. My average speed was 12.5 mph so I didn't push it at all.i was please that for much of the ride my heard rate was lower than usual. At the half way coffee stop my average heart rate was 135. The ride was relatively flat.

My concern is that my heart rate went up considerably in the last 4 or 5 miles. It was around Swansea bay into a fairly stiff wind but is was around 190 for much of the time and peaked ar 222 according to my Garmin 500. When I stopped riding it dropped quickly.

Has anyone else experienced this? could dehydration or glycogen deficit caused this?

Before the ride I had porridge and toast. Ate 2 cereal bars, 10 jelly babies and drunk 2 bottles with a energy tablet in each on the ride. I also had a large black coffee and toast at the half way cafe stop.


http://app.strava.com/activities/50937972

 

[T.M.H.N.E.T]

I'd call that jersey flap which can elevate readings. There was no sudden effort or change in speed (.8 of a mph)

 

[philinmerthyr]

I'd call that jersey flap which can elevate readings.

Can you explain? I'm confused

 

[T.M.H.N.E.T]

Clothing flapping around in wind,which you were riding into can throw off HRM readings. It picks the flapping up an an extra beat or indeed, as a very fast beat.

You can see it clearer if you upload to garmin connect. Click the arrow button at the top of the Heart Rate box will let you see it easier.

 

[uclown2002]

Clothing flapping around in wind,which you were riding into can throw off HRM readings. It picks the flapping up an an extra beat or indeed, as a very fast beat.

You can see it clearer if you upload to garmin connect. Click the arrow button at the top of the Heart Rate box will let you see it easier.

I get this often depending on the outer garment I'm wearing. I have no end of problems in the wind with regular fabric cycling jerseys, but never had an issue with my gore waterproof.

 

[HLaB]

Looks like a spot of interference or the hr strap coming away from your chest (not reading correctly); the latter happens to me frequently on longer lower tempo rides, when there isnt enough sweat to create a sufficient connection.

 

[Albert]

Jersey Flap is a known thing which I had a lot with my old Garmin 705, but not at all with my new 800. However, having a higher or more quickly elevating heart rate at the end of a long ride is also quite reasonable if you are very tired and having to make a big effort fighting the wind or a big hill.

 

[MrJamie]

My Garmin Forerunner HRM started spiking towards the end of runs, then the whole run as it gradually died. You get similar symptoms if your strap isn't in the right place, if its not wet enough, apparently worse if you're hairy and technical shirts have some problem with static sometimes, people recommend those anti static sheets in the dryer.

I bought some of the gel they use for those ABS belts that claim to shock you a six pack, its cheap and is meant to be very good for HRMs, seems great so far

 

[Zofo]

Try Googling "Cardiac Drift" as well

 

[Hont]

A simple test, if you are not pushing hard and the HRM seems high, is to take your own heartrate the old fashioned way. If it's miles off the HRM, then you know it's a false reading.

If the HRM is accurate, see a Doctor.

 

[berty bassett]

i went out the other evening when it was a bit breezy - i pushed it a little but when i got home and checked hr the av was 180 and max 256 not bad for a nearly 50 year old ! if thats right then i better increase my upper body strength for all those daisies i will be pushing up soon

 

[jdtate101]

BTW, OP if you're using the Garmin "premium" strap they have a habit of overreading as they get older. Just look on the Garmin forums and there are loads of threads about it. The older hard plastic type band is much more durable. I have an 800 and it shipped with the premium strap, which failed within the first 2 weeks, so garmin send me the older one (at my request after much web research), and it's never mis-read or failed and is now 2yrs old.

 

[philinmerthyr]

The same thing happened this morning from around 20 miles onwards. I now know it is false reading with my Garmin 500 HRM. Each time it happened I stopped. Removed te strap and wiped it and put it back on. From then my HR was back to normal. I did 100km (62 miles) and my average hr was 137 even with a few instances when it registered up to 240.

It's annoying but at least I know I'm not having a heart attack.

 

[uclown2002]

http://www.evanscycles.com/products/paceline/buh-bump-heart-rate-monitor-cream-25oz-ec022217

I was having same issue with my Garmin 800 until I bought this.