Aerobic Threshold estimation using HRV based method DFA-⍺1 March 23, 2021August 25, 2021 by zenturtle, posted in Training A simple protocol to determine Aerobic Threshold used in Polarized Training, based on HRV.Share this: Share on X (Opens in new window) X Share on Facebook (Opens in new window) Facebook Share on LinkedIn (Opens in new window) LinkedIn Share on Pinterest (Opens in new window) Pinterest Like Loading...