Towards the end of a 28 milerun I thought my HR readings were wrong. I had successfully kept readings to mid 130s or lower thanks to a walk/run approach. However, in the last few miles the readings went high & it took a good while to get them down.
Might this be due to a lack of food/carbs? I did take some food on board but maybe not enough soon enough.
So, does anyone know how I can tell if the readings are wrong?
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HRMs dont normally read wrong - you may get spikes of 220 or so occasionally - but thats easy to spot.
Looking at the readings I see I managed 187 before 20 miles whereas my max is 183!
I guess I should get more info before forming a conclusion just yet.
lol
PMSL @ Dragon Breath. Great Mantra.
Mind you, I have been told by cardio doc that I have an erratic heartbeat sometimes.
Dragon Breath - yup, there's a good baseline for all of us.
D74 - I tightened the belt after Friday's run in case it was a bit loose. I hadn't thought it might get loose on yesterday's run though.
Muzzy - I'm wondering if lack of food or drink played a part, although I didn't feel dehydration was a problem during the run or later. Possibly I was heading that way?
The celebration for you Muzzy is that the cardio doc confirms you have a heart (forumites please note!).
Cheers.
couldlookatme
and know that I lo-o-o-ove you...#
:oD
... and I claim my £5.
if its more than that then it'll probably either be dehydration or lack of endurance..
Cheers for your thoughts though.
Make sure you are drinking lots, (e.g. 750ml per hour ?).
cardiac drift is not a problem per se, you just need to know its there and adjust your pace appropriately. For example if you have twice the distance to cover and you are already hitting 160 (87% ?) at half way, then its probably a good idea to slow down even more at the start. Either that or wait for your body to slow you down naturally later (this is probably gonna be painful!).
all that said, if thats your first really long slow run, then over the next few you should see a pretty big improvment.
The lack of endurance is a (frightening) possibility. After you have just run 28 miles!!!
the only time I've seen a sudden jump like JN describes was in a marathon at 21 miles when my energy levels plummeted (hit the wall) - slowing down, getting a gel and some proper fluid down my neck rather than just sipping, brought it back to a more normal level and I was able to pick it up again........