Dynamic Changes in Heart Rate Variability and Nasal Airflow Resistance during Nasal Allergen Provocation Test

Figure 4

An increase of nasal airflow resistance and related LF, HF, and LF/HF ratio curves for birch pollen allergic subject 1. (a) Resistance curve (black) and robust fit of the resistance curve (red). (c) LF curve (black) and robust fit of the LF curve (red). (b) HF curve (black) and robust fit of the HF curve (red). (d) LF/HF ratio curve (black) and robust fit of the LF/HF ratio curve.

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