Table 2 Correlation between delta EMG and delta HRV indices.

From: Effects of effortful swallowing on cardiac autonomic control in individuals with neurogenic dysphagia: a prospective observational analytical study

HRV indices

r

p

RMSSD

− 0.73

0.0001

HF

− 0.43

0.04

SD1

− 0.73

0.0001

  1. RMSSD square root of the square mean of the differences between adjacent normal RR intervals, SD1 standard deviation of instantaneous beat-to-beat variability, HF high frequency
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