HR goes silly for 10 minutes
Discussion
I am an old cyclist (73) and I use a turbo trainer to keep away from the cold and wet. My resting HR is <60 and during sleep it goes down to about 55.
HR is measured with Wahoo Tickr with conductive gel.
I've been training regularly 4 times a week for some time and do not have any underlying health problems BP is fine.
I've seen tables for max HR that say it comes down with age and the most common is a calculation that says 220-age is max hr.
That gives me a HR max of 147. Over the past two years I have often seen peaks of >160 with no effects. My GP says as long as it doesn't hurt carry on.
I've been doing two types of turbo session.
1. 45 minutes with three efforts. Warm up, 3 off 5 minutes at 150bpm with 5 minutes between. target HR in the warm up and rests is 125bpm.
The aim is to increase on-effort cardio performance.
Here's a picture showing the traces - just look at the speed and HR compared, and you will the efforts and recoveries. All looks good.
2. 1hr at 135BPM - this is the rate at which I can talk but a bit breathless. Recovery is very quick as soon as I stop.
Aim is to build endurance and overall the mileages have been increasing over the hour for the same HR.
The normal trace for this work out is 4 flat lines if I'm concentrating properly.
However, sometimes, last time was a month ago and then again this Sunday; the HR suddenly goes mad.
I can feel the adrenaline rush come out of nowhere and the HR goes up.
I have found that if I just keep going at the same tempo, after about 10 mins, the HR just falls back down to the target rate for that effort. I don't feel any different whilst this is happening, it just feels fine.
Any cardio folks who can give an explanation and need I worry?
As an aside, you can see just how slow an old bloke is!
HR is measured with Wahoo Tickr with conductive gel.
I've been training regularly 4 times a week for some time and do not have any underlying health problems BP is fine.
I've seen tables for max HR that say it comes down with age and the most common is a calculation that says 220-age is max hr.
That gives me a HR max of 147. Over the past two years I have often seen peaks of >160 with no effects. My GP says as long as it doesn't hurt carry on.
I've been doing two types of turbo session.
1. 45 minutes with three efforts. Warm up, 3 off 5 minutes at 150bpm with 5 minutes between. target HR in the warm up and rests is 125bpm.
The aim is to increase on-effort cardio performance.
Here's a picture showing the traces - just look at the speed and HR compared, and you will the efforts and recoveries. All looks good.
2. 1hr at 135BPM - this is the rate at which I can talk but a bit breathless. Recovery is very quick as soon as I stop.
Aim is to build endurance and overall the mileages have been increasing over the hour for the same HR.
The normal trace for this work out is 4 flat lines if I'm concentrating properly.
However, sometimes, last time was a month ago and then again this Sunday; the HR suddenly goes mad.
I can feel the adrenaline rush come out of nowhere and the HR goes up.
I have found that if I just keep going at the same tempo, after about 10 mins, the HR just falls back down to the target rate for that effort. I don't feel any different whilst this is happening, it just feels fine.
Any cardio folks who can give an explanation and need I worry?
As an aside, you can see just how slow an old bloke is!
Agree that you should get this checked out, however - if you're really maxing out your heart rate for 10 mins you would feel it. My old Garmin watch used to do something similar occasionally, with my heart rate going well beyond its maximum, while I was running at an easy conversational pace, before abruptly dropping back to normal. The new one doesn't do it, so I suspect a sensor problem.
When I started running a few years back I noticed that my heart rate sometimes fluctuated wildly for the first few Km, and was referred for an ECG. This picked up no issues, except that I was told that consumer heart rate devices are not usually particularly accurate!
So get it checked, but probably an issue with the technology.
When I started running a few years back I noticed that my heart rate sometimes fluctuated wildly for the first few Km, and was referred for an ECG. This picked up no issues, except that I was told that consumer heart rate devices are not usually particularly accurate!
So get it checked, but probably an issue with the technology.
Thanks for the quick responses everyone.
I don't think it's a sensor problem. As I said HR is measured with wahoo Tickr and I use conductive gel. The readings are too consistent to look like a sensor fault.
I am aware of the adrenaline surge. I'm pedalling along watching the speed and heart rate, listening to Spotify. I need to concentrate fairly hard to keep the HR level, as I'm not working very hard. If my mind wanders, I tend to just go harder at it.
Then, suddenly; there's this rush and the HR goes up. If I keep constant, then about 10 mins later, it falls again.
I'll send this to the GP. But first; the sun is out and I'm going for a real ride in the open air, before I'm not allowed out because I'm over 70!
I don't think it's a sensor problem. As I said HR is measured with wahoo Tickr and I use conductive gel. The readings are too consistent to look like a sensor fault.
I am aware of the adrenaline surge. I'm pedalling along watching the speed and heart rate, listening to Spotify. I need to concentrate fairly hard to keep the HR level, as I'm not working very hard. If my mind wanders, I tend to just go harder at it.
Then, suddenly; there's this rush and the HR goes up. If I keep constant, then about 10 mins later, it falls again.
I'll send this to the GP. But first; the sun is out and I'm going for a real ride in the open air, before I'm not allowed out because I'm over 70!
Anything is speculation until you are checked out.
I had similar and soldiered on....
Turned out I was going into tachycardia (VT) and then one day the VT worsened and I went into Ventricular Fibrillation (VF) which is a cardiac arrest that I was VERY lucky to have survived, not many do.
I now have an implanted defib in my chest. If I'd gone sooner it is quite likely it could have been managed with drugs.
I had similar and soldiered on....
Turned out I was going into tachycardia (VT) and then one day the VT worsened and I went into Ventricular Fibrillation (VF) which is a cardiac arrest that I was VERY lucky to have survived, not many do.
I now have an implanted defib in my chest. If I'd gone sooner it is quite likely it could have been managed with drugs.
colin_p said:
Anything is speculation until you are checked out.
I had similar and soldiered on....
Turned out I was going into tachycardia (VT) and then one day the VT worsened and I went into Ventricular Fibrillation (VF) which is a cardiac arrest that I was VERY lucky to have survived, not many do.
I now have an implanted defib in my chest. If I'd gone sooner it is quite likely it could have been managed with drugs.
Thank you Colin - I have emailed the GP.I had similar and soldiered on....
Turned out I was going into tachycardia (VT) and then one day the VT worsened and I went into Ventricular Fibrillation (VF) which is a cardiac arrest that I was VERY lucky to have survived, not many do.
I now have an implanted defib in my chest. If I'd gone sooner it is quite likely it could have been managed with drugs.
Pickled Piper said:
liner33 said:
Sounds like Atrial Fibrulation , as said get checked out and shown those traces to the doc
This. I'm not medically qualified. Don't panic but do get it checked out. My father was diagnosed with AF aged 80. He found some odd traces via his fitbit. https://store.kardiamobile.co.uk/
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