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Zone 2 Training & HRV (N=1 Data)
Switching exclusively to Zone 2 / MAF cycling for 3 months improved HRV, supporting the role of aerobic base training in autonomic function.
N=1 Evidence
- Captain_Doughnutman: Exclusive Zone 2 / MAF cycling for 3 months. Zero intensity work
- HRV improved over the period
N=1 supporting the widely reported benefit of aerobic base training for HRV.
Tertiary map
Wikipedia: Aerobic exercise (wikipedia-aerobic-exercise-overview) situates low-to-moderate intensity “cardio” and aerobic metabolism / fuel-shift vocabulary coaches often label Zone 2—HRV deltas on this page remain N=1; pair with HIIT & sleep quality (higher-intensity-interval-training) and Exercise & mitochondrial biogenesis (exercise-and-mitochondria) for intensity contrast literature.
Evidence
- N=1 Reports on forum.trainerroad.com
- Wikipedia: Aerobic exercise
- Which Training Intensity Distribution Intervention will Produce the Greatest Improvements in Maximal Oxygen Uptake and Time-Trial Performance in Endurance Athletes? A Systematic Review and Network Meta-analysis of Individual Participant Data