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Cardiac Readiness

What It Measures

Cardiac Readiness quantifies the autonomic nervous system’s balance and the cardiovascular system’s recovery state through analysis of heart rate patterns from ECG recordings. This system reflects your body’s stress response and recovery capacity.

Key Physiological Indicators

  • Heart Rate Variability (HRV): Beat-to-beat variation in cardiac intervals

  • Autonomic Balance: Ratio between sympathetic (stress/“fight or flight”) and parasympathetic (recovery/“rest and digest”) nervous system activity

  • Stress Index: Cardiovascular strain and adaptation level

  • Adaptation Reserves: Capacity to respond to life stressors and maintain homeostasis

  • Rhythm Stability: Detection of arrhythmias or irregular patterns Recovery Efficiency: How well the body has recovered from physical, emotional, and mental stressors

Measurement Source Technology:

  • Multi-lead ECG recording

  • Duration: 2-5 minute resting measurement

  • Position: Supine (lying down) at rest

  • Analysis Parameters:

    • Time-domain: SDNN, RMSSD, SDSD

    • Frequency-domain: VLF, LF, HF power, LF/HF ratio

What Affects Cardiac Readiness?

  • Decreases with: Physical exertion, insufficient sleep, illness, emotional stress, work pressure, dehydration, alcohol, poor diet

  • Increases with: Adequate rest, quality sleep (7-9 hours), balanced nutrition, stress management practices, hydration, positive social connections

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