N=1 Reports on the5krunner.com

N=1 Self-Experiment Data

Anonymous (Berlin Marathon)

• Protocol: Berlin Marathon race; shifted from running to cycling post-race; continued training
• Before: HRV baseline 33 ms
• After: HRV averaging 25–26 ms for 7 consecutive weeks; lowest week 23 ms
• Change: −10 ms (−30%) sustained 7 weeks
• Duration: 7 wks post-marathon
• Device: Oura + Garmin FR965

Anonymous Oura user

• Protocol: Ran Berlin Marathon; shifted from running to cycling post-race; continued training
• Before: Oura baseline 33 ms
• After: 25–26 ms weekly avg for 7 consecutive weeks; lowest 23 ms
• Change: −10 to −15 ms (−30 to −35%) sustained 7 weeks
• Duration: 7 wks post-marathon
• Device: Oura Ring + Garmin FR965