Marco Altini
  • Home
  • Research & Publications
  • Apps & Projects
  • Blog

30 days of Heart Rate Variability (HRV) Biofeedback

30/1/2021

 
​In my latest blog post, I go over the basics of heart rate variability (HRV) biofeedback and show changes in baseline physiology (resting HR, HRV) potentially linked to practicing deep breathing at resonant frequency consistently for the past month

Learn more, here 

Get breathing!
Picture

New Podcast: FITNESS FREAKS

29/1/2021

 
Grateful for another opportunity to chat about monitoring heart rate variability (HRV), the work we do HRV4Training, and what it can be used for

Thank you Ben and Sam for the chat!

Episode here🎙
Picture

HRV-based aerobic threshold estimation: try it yourself

29/1/2021

 
A few weeks ago on the HRV4Training Blog I discussed a new HRV-based approach to estimate the aerobic threshold. A new paper from Bruce Rogers and Thomas Gronwald validates the method with respect to VT1

The paper is titled: "A New Detection Method Defining the Aerobic Threshold for Endurance Exercise and Training Prescription Based on Fractal Correlation Properties of HRV" and shows some neat data (male participants only), see for example VT1 vs DFA alpha 1 in the image below

You can find the full text of the paper at this link

TRY IT YOURSELF

1) fit file and colab code:

You can try this method with your .fit file (if it includes RR intervals) by loading it in my Colab (that you can find here)

2) Use the Heart Rate Variability Logger app with a chest strap to collect data

The Heart Rate Variability Logger is currently the only app able to provide DFA alpha 1 in real-time.
Picture
If you try the app, make sure to configure it as follows, in Settings:
  • Artifact removal: "Workout"
  • Computation window: "2 minutes"

At that point, any value below 0.75 in alpha 1 as computed every 2 minutes, highlights an intensity higher than the aerobic threshold (zone 1 in a 3 zones system, or zones 1 and 2 in a 5 zones system, basically low-intensity work as typically present in polarized plans)

Enjoy!

British Journal of Sports Medicine features HRV4Training

29/1/2021

 
Thank you to BJSM and the authors of this post for featuring our work

"using HRV4Training we can accurately monitor training-related physiological adaptations integrating internal and external load together with recovery-related variables that are key for athlete’s performance" 

Article here
Picture

COVID and HRV: acute and long term changes

6/1/2021

 
​Below we report two case studies highlighting aspects of potential physiological responses to COVID infection, which hopefully can help others identifying promptly potential issues, or tracking recovery (or impaired recovery) in the long run.

1. "Long COVID" and what happens when recovery takes a lot longer. Here is an example with HRV4Training data and rMSSD still suppressed 2 months after infection
Picture
2. acute COVID infection in a pro athlete. You can see here how large is the drop with respect to their normal values, this is how data can help to identify a problem, despite lack of specificity for a condition: ​
Picture
Take care and stay safe

    Marco ALtini

    Founder of HRV4Training, Advisor @Oura , Guest Lecturer @VUamsterdam , Editor @ieeepervasive. PhD Data Science, 2x MSc: Sport Science, Computer Science Engineering. Runner

    Archives

    December 2022
    August 2022
    June 2022
    April 2022
    March 2022
    February 2022
    January 2022
    December 2021
    November 2021
    October 2021
    September 2021
    July 2021
    June 2021
    May 2021
    April 2021
    March 2021
    February 2021
    January 2021
    December 2020
    November 2020
    October 2020
    September 2020
    August 2020
    July 2020
    June 2020
    May 2020
    April 2020
    March 2020
    February 2020
    January 2020
    November 2019
    October 2019
    May 2019
    April 2019
    March 2019
    November 2018
    October 2018
    April 2018
    March 2018
    June 2017
    December 2016
    July 2016
    March 2016
    September 2015
    August 2015
    May 2015
    March 2015
    February 2015
    January 2015
    December 2014
    May 2014
    April 2014
    January 2014
    December 2013

    RSS Feed

  • Home
  • Research & Publications
  • Apps & Projects
  • Blog