Hrv And Lf/hf Power Readings At Different Times Of The Day
I have 2 questions about HRV, and would like to hear other's experiences on the matter. I use the sweatbeatlife app and a polar H7 chest band to measure my HRV.
1) I thought that measuring your HRV first thing on waking up is the best time to do it. When I do this, my reading is almost always very bad, and my LF/HF ratio is extremely high, 5x-15x, and my stress reading is always 5. If I measure before going to bed, my reading is quite variable, but usually a lot better, and I frequently see a LF/HF reading of around 0.8x-1.5x, and a stress reading of 1-3, and a much higher HRV score and much higher power frequency in general. How worried should I be about this very high stress reading in the morning? Does it suggest that my cortisol is astronomically high in the morning? How much of a bad thing is that if its low in the evenings?
2) I seem to get much lower HRV scores with Sweetbeatlife (iphone app) than with Elite HRV (android app). So I have continued using the app with lower scores to be conservative. Anyone else experienced similar discrepancy between apps? I frequently get around 70 HRV on sweatbeatlife and 85-90 on Elite HRV when measuring them straight after one another.