Relaxation or Regulation: The Acute Effect of Mind-Body Exercise on Heart Rate Variability and Subjective State in Experienced Qi Gong Practitioners

Figure 5

Sample RR-interval trajectory during rest and Qi Gong. RR-interval series of VP12 for initial rest (RS 0), the first Qi Gong exercise (Qi 1), the second Qi Gong exercise (Qi 2) and the resting period following Qi Gong (RS 1). VP12 displayed a high degree of SP coherence (Figure 4). This figure shows the rhythmic changes (around 0.05 Hz) in RR intervals associated with activation and relaxation during both Qi Gong exercises.

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