# Vo2Max estimation, Astrand Ryhming method

**URL:** <https://forum.intervals.icu/t/vo2max-estimation-astrand-ryhming-method/2421>\
**Category:** Feature Requests\
**Created:** [3 January 2021 19:59 UTC](https://forum.intervals.icu/t/vo2max-estimation-astrand-ryhming-method/2421 "2021-01-03T19:59:57Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![William\_Barnes](https://forum.intervals.icu/user_avatar/forum.intervals.icu/william_barnes/32/37518_2.png) [@William\_Barnes](https://forum.intervals.icu/u/William_Barnes)\
**Post date:** [3 January 2021 23:01 UTC](https://forum.intervals.icu/t/vo2max-estimation-astrand-ryhming-method/2421/2 "2021-01-03T23:01:46Z")

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I think that may already be on David’s to do list: [https://forum.intervals.icu/t/pvo2max-in-relation-to-pftp/1042/27](https://forum.intervals.icu/t/pvo2max-in-relation-to-pftp/1042/27)

Seems was originally planned to be implemented with the MAP chart though. Did implementing VO2max run into obstacles @david?

Having read this paper on the Astrand Rhyming method, it is quite different to the ones covered in that other thread, being very submaximal. I imagine it could be hard to automatically tease appropriate efforts out of users’ data.

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