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higher heartrate during cold runs?

Hi all, I've noticed that during winter runs and especially when the outside temp is close to 5°C or even less, it seems my heartrate is sensibly higher than usual. Sometimes I'd say even irrealistic, i.e. close to 190 that's definitely out of my heart capabilities...

Is there something related to out temp that can affect bpm readability? edit: I'm using inbuilt optical reader

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mcalista over 4 years ago +3 suggested

Yes, one of the body's responses to cold is to divert blood flow away from the extremities (eg. hands and feet) and from the surface of the skin, to preserve body heat for the essential organs in the head…
olni65 over 4 years ago +1

Yes - lack of humidity. Giving you poorer contact between you and your watch. Do you use a strap or the inbuilt optical reader?

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0 afarnedi over 4 years ago in reply to NickMN

Good explanation. As far as the "cadence lock" is concerned, I think this is an unrealistic value as well...My cadence is always around 170/175 during a typical run with pace @ 4'30" min/km but for sure not @190