Biometrics terms.
Protocol Glossary.
Science-backed definitions for every term in your health data: plain English and the mechanism behind it.
44 terms in Biometrics
B
4 terms
- Baroreflex Sensitivity (BRS)How quickly your body corrects blood pressure swings
- Basal Body TemperatureThe one reliable way to confirm ovulation happened, one day at a time
- Blood Pressure Variability (BPV)How much your blood pressure swings between readings, a separate risk marker from your average blood pressure number.
- Breathing Rate VariabilityThe natural ebb and flow in your breathing rhythm, and what a flattened pattern can mean
C
4 terms
- Complete Blood Count (CBC)The standard blood panel that screens oxygen transport, immunity, and clotting in one draw
- Continuous Glucose Monitoring (CGM)Real-time blood sugar dynamics on demand
- Cortisol Awakening Response (CAR)The first hormonal signal that sets your day
- CRP (C-Reactive Protein)Your body's systemic inflammation signal
H
6 terms
- Heart Rate Recovery (HRR)How quickly your heart rate drops after you stop exercising, a strong marker of cardiovascular fitness and autonomic health.
- Heart Rate Reserve (HRR)The usable range between rest and maximum effort
- Heart Rate Variability (HRV)Your nervous system's daily readiness signal
- Hemoglobin A1c (HbA1c)A 3-month average of your blood sugar control
- HOMA-IR (Homeostatic Model Assessment of Insulin Resistance)The earliest measurable signal of insulin dysfunction
- hs-Troponin (High-Sensitivity Cardiac Troponin)The blood marker that detects damage to heart muscle itself, not just its risk factors
R
5 terms
- Readiness ScoreOura's daily verdict on your capacity for stress
- Recovery ScoreYour body's readiness verdict after last night
- Respiratory RateBreaths per minute: your body's quiet early warning signal
- Resting Heart Rate (RHR)How hard your heart works when it doesn't have to
- RMSSD (Root Mean Square of Successive Differences)The beat-to-beat calculation that powers your HRV score
S
5 terms
- SDNN (Standard Deviation of NN Intervals)The HRV metric Apple Watch uses, and why it reads higher than Oura
- Skin Temperature DeviationYour body's overnight thermostat as a recovery signal
- SpO2 (Blood Oxygen Saturation)The percentage of your red blood cells carrying oxygen
- Strain ScoreYour daily cardiovascular load, accumulated
- Sympathetic vs. ParasympatheticThe two-branch system behind every readiness metric
More terms added regularly. Check back for new entries across all categories.
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