Source comparison
TB-500 Research Garmin Integration: Comparison of Metrics
HRV 7-Day Average Autonomic nervous system balance and parasympathetic tone Strong. Rises 8–15% during active tissue repair phases Weeks 2–4 post-loading Increased HRV indicates reduced systemic inflammation and improved cardiovascular efficiency; baseline var
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- HRV 7-Day Average
- Autonomic nervous system balance and parasympathetic tone
- Strong. Rises 8–15% during active tissue repair phases
- Weeks 2–4 post-loading
- Increased HRV indicates reduced systemic inflammation and improved cardiovascular efficiency; baseline varies widely (30–100ms typical), so track percent change from your own baseline, not absolute numbers
- Resting Heart Rate
- Cardiovascular efficiency and metabolic state
- Moderate. Drops 3–6 bpm as angiogenesis improves oxygen delivery
- Weeks 3–5
- Lower RHR suggests improved tissue perfusion; confounded by training load and sleep quality, so compare week-over-week averages, not daily readings
- REM Sleep Duration
- Deep cognitive recovery and growth hormone secretion
- Moderate. Extends 10–20 minutes per night during repair windows
- Weeks 2–6
- More REM correlates with enhanced tissue remodeling (GH peaks during REM); affected by alcohol, caffeine, and stress, so control for lifestyle variables
- Body Battery Morning Score
- Overnight autonomic recovery and readiness
- Strong. Rises from 70s to mid-80s as systemic recovery improves
- Weeks 3–6
- Higher morning scores reflect better parasympathetic rebound overnight; most reliable when sleep duration and bedtime consistency are held constant
- Deep Sleep Percentage
- Physical recovery and immune function
- Weak. TB-500 doesn't consistently alter deep sleep architecture
- Variable / No clear pattern
- Deep sleep is more responsive to training load than peptide administration; useful as a control variable to confirm other metrics aren't confounded by overtraining
- Professional Assessment
- TB-500 research integration is most effective when you track HRV and Body Battery as primary endpoints, using resting heart rate and REM sleep as supporting indicators. Deep sleep serves as a negative control to rule out placebo-driven improvements across all metrics simultaneously.