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Table 3 Correlation between the VHI domains and the frequency domain indices of heart rate variability

From: Vocal complaint in physical education teachers and its association with the cardiovascular system

  Functional Organic Emotional
  r p r p r p
LF (ms 2 ) 0.05 0.83 -0.20 0.39 0.048 0.84
LF (nu) -0.20 0.39 0.047 0.84 -0.03 0.87
HF (ms 2 ) 0.30 0.04 -0.34 0.04 0.02 0.92
HF (nu) 0.23 0.32 -0.03 0.89 0.01 0.94
LF/HF -0.21 0.38 0.04 0.87 -0.03 0.89
  1. VHI: Vocal handcap index.