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The effect of device-guided slow breathing exercise on baroreflex sensitivity related indexes between resting session and slow-breathing session during the 3-month period. (A) Baroreflex sensitivity. (B) The low-frequency component (0.1 Hz) of blood pressures (BPLF). (C) The low-frequency component (0.1 Hz) of heartbeat intervals (RRLF). * p < 0.05.
