TABLE 2

Autonomic Nervous System Function (n = 12) and Q–T Dispersion (n = 13) Before and at End of 6-Month Physical Training Program

VariableAt startAfter 6 mo% changeP*
Q–T dispersion (ms)52 ± 536 ± 5−300.0108
R–R interval (supine) (ms)796 ± 41888 ± 45+120.0011
Heart rate variability† (ms2)
 Total RRI4.53 ± 0.305.02 ± 0.36+110.0146
 HF RRI3.60 ± 0.344.32 ± 0.38+200.0043
 LF RRI3.97 ± 0.384.05 ± 0.43+20.6658
Baroreflex sensitivity (ms/mm Hg)5.83 ± 0.8210.15 ± 1.66+740.0331
SBP variability (mm Hg · ms)
 Total4.89 ± 1.033.18 ± 0.48−350.0349
 HF band1.64 ± 0.391.43 ± 0.36−130.5292
 LF band2.79 ± 0.381.76 ± 0.24−370.0593

  • ↵* P ≥ 0.05, not significant.

  • ↵† Logarithmically transformed spectral power is presented.

  • RRI = R–R interval.

  • Mean ± SEM and P values of paired t tests are presented.