87 - Bruce Rogers on HRV Estimation of Aerobic Threshold

Endurance Innovation is now on Patreon! Have a peek at our page and show us some love.2:30 Bruce’s introduction to HRV7:30 defining heart rate variability (HRV) and its response to exercise11:45 the non-linear HRV index DFA a1 (alpha 1)12:30 looking at fractals on random walks 17:00 a discussion of exercise intensity distribution and thresholds20:00 the challenges with measuring or estimating the aerobic threshold (aka LT1, VT1)26:00 A new detection method defining the aerobic threshold for endurance exercise and training prescription based on fractal correlation properties of heart rate variability28:30 3 ways to determine LT1 through HRV DFA a1 analysisProgressive ramp test past estimated LT1 and using Kubios for analysisConstant 5-8’ power / pace intervals and using Kubios for analysisConstant 6-8’ power / pace intervals using HRV4T Data Logger36:30 using the Data Logger for discrete testing vs live ride analysis 42:45 equipment needsKubios free or premiumHRV4T Data Logger, using workout mode with 2’ intervalsHR Straps: Polar H-series50:15 shortcomings of HRV DFA a1 analysisMissed beat artifact >5% in intense training or in populations with cardiac arrhythmias A low-quality signal analysis by software No test data for female athletesSo far only tested on cycling and runningTake a look at Bruce's excellent blog and follow him on Twitter. For a review of HRV, have a listen to our interview with HRV4Training founder Marco Altini. The HRV4T HRV Logger can be found in the Apple Store.