Always great articles. As an aside, besides using your app for a long time now (Pro version) which is fantastic, I wanted your opinion on EliteHRV which I also use. Most times the two are nowhere near identical with HRV4Training displaying a far lower value.
I take two readings everyday, one after the other. I use a Polar H10. I’ve used both apps for several years in order to get longitudinal data about my values.
Just wondering if you’d proffer a reason for the differences?
thank you Jeff, I appreciate the feedback and support. Not sure honestly about this difference, especially when using an external sensor the two should provide the same rMSSD value, give or take 10-15 ms which could be a normal difference in repeated measures. We do score a bit better in a recent independent validation (https://www.hrv4training.com/blog2/independent-validation-of-hrv4training), but again, small differences really, which probably have to do with how artifacts are handled.
Great insight from you and Sabah! Surprised about her findings, because I would think that fasting would increase stress on the body and HRV might dip a little. I haven't tested that on myself, because I don't do more than a 24 hour fast anymore. I do notice that having a lighter dinner supports better sleep & recovery, leading to a higher HRV and lower RHR.
Thank you for yet another valuable and thoughtful post, Marco. And congrats to Sabah for such a tough undertaking.
You rightly point out that HRV cannot (maybe yet) be used to stratify individuals. In the scope of occupational health, I'd consider stratification to be an unmet market and clinical need because it may well be difficult to intervene appropriately at the right time or quantify intervention efficacy.
Always great articles. As an aside, besides using your app for a long time now (Pro version) which is fantastic, I wanted your opinion on EliteHRV which I also use. Most times the two are nowhere near identical with HRV4Training displaying a far lower value.
I take two readings everyday, one after the other. I use a Polar H10. I’ve used both apps for several years in order to get longitudinal data about my values.
Just wondering if you’d proffer a reason for the differences?
Thank you!
thank you Jeff, I appreciate the feedback and support. Not sure honestly about this difference, especially when using an external sensor the two should provide the same rMSSD value, give or take 10-15 ms which could be a normal difference in repeated measures. We do score a bit better in a recent independent validation (https://www.hrv4training.com/blog2/independent-validation-of-hrv4training), but again, small differences really, which probably have to do with how artifacts are handled.
Great insight from you and Sabah! Surprised about her findings, because I would think that fasting would increase stress on the body and HRV might dip a little. I haven't tested that on myself, because I don't do more than a 24 hour fast anymore. I do notice that having a lighter dinner supports better sleep & recovery, leading to a higher HRV and lower RHR.
thank you for reporting your experience, much appreciated
Thanks for the thorough review about Sabah defense! A fruitful thesis from a nice friend!.. My pleasure to subscribe in this blog!
thank you for reading!
Thank you for yet another valuable and thoughtful post, Marco. And congrats to Sabah for such a tough undertaking.
You rightly point out that HRV cannot (maybe yet) be used to stratify individuals. In the scope of occupational health, I'd consider stratification to be an unmet market and clinical need because it may well be difficult to intervene appropriately at the right time or quantify intervention efficacy.
Best success, Sabah.
Thank you for this article. I never thought that HRV will not get effected by Ramadan fasting. Will see it during Ramadan itself :)