Biometrics MOC
Hub
- Grip-Strength-Tracking — integrative neuromuscular + inflammatory biometric (primary hub for this MOC)
Core Wearable Signals
- HRV — heart rate variability (primary recovery signal)
- HRV — Myths and Overmarketed Claims — common HRV misinterpretations (LF/HF, breathwork)
- HRV — Apple Watch Limits — what Watch HRV can and can’t tell us
- REM suppression — cannabis primary sleep signature
- Sleep architecture — general sleep stage patterns and substance-specific effects
- Sleep Architecture Enhancement — device validation, recovery scoring algorithm, nocturnal HRV analysis, sleep deprivation meta-analysis (batch 8)
- Sleep architecture (alcohol) — alcohol sleep stage effects
- Cocaine sleep architecture — stimulant sleep disruption
- Cardiovascular signatures — RHR, BP, HRV combined
- HRV signatures — general HRV patterns
- HRV signatures (alcohol) — alcohol HRV signature
Glucose and Metabolic
- Glycemic Variability — glucose fluctuation burden across the day
- Metabolic Flexibility — fuel-switching and return-to-baseline capacity
- Postprandial Glucose Response — meal-driven glucose peak shape and recovery
Muscle and Body Composition
- Grip-Strength-Tracking — integrative neuromuscular + inflammatory biometric; see also Grip-Strength-Detection-Model
- Muscle Health Biomarkers — cystatin C preferred, Sarcopenia Index, IGF-1 (fasting)
- Wearable Gait Speed — iPhone vs. Apple Watch validation; functional complement to grip
Blood and Longevity Biomarkers
- Blood Biomarker Optimization — ApoB, hs-CRP, fasting insulin, TG:HDL, HbA1c, iron; CLS scoring
- Longevity Biomarkers Testing — GrimAge, telomere, SASP, IGF-1, Klotho; biological age gap
- Cystatin C Kidney Monitoring — cystatin C as muscle-mass-independent kidney function biomarker
- Omega-3 Index — EPA+DHA % of RBC fatty acids; target >8%
Substance-Specific Biometrics
- Melatonin Sleep Biometrics — SOL improvement, nocturnal HRV, RHR reduction; proxy-only, no direct wearable validation
Detection Models (linked from 05-Detection-Models)
- Grip-Strength-Detection-Model — measurement protocol, device recommendations, alert thresholds, Apple Watch reality check
- Cystatin C Detection Model — coaching zones, Apple Watch override logic, lab integration
- Wearable Gait Speed — validated wearable measurement for functional decline
Sarcopenia (cross-referenced with 05-Detection-Models)
- Sarcopenia Detection — EWGSOP2 staging, BIA vs. DXA, coaching tiers
- Sarcopenia Diagnostic Criteria — cut-offs, DXA LSC, validated devices
- Sarcopenia Coaching Protocol — Green/Yellow/Red coaching tiers
- GLP-1 Body Composition — lean mass fraction on GLP-1 therapy
Related Mechanisms (from 02-Mechanisms)
- Skeletal-Muscle-Strength-Aging — Type II fiber atrophy, motor unit remodeling, voluntary activation decline, specific force decline
- Circadian Biology — circadian regulation affecting biometric signals
- Vagus Nerve — parasympathetic function, inflammatory reflex; essential companion to HRV
- Respiratory Sinus Arrhythmia — HRV physiology