Skip to main content

Table 2 Heart rate variability changes from pre to post exercise intervention

From: The impact of high-intensity interval training exercise on breast cancer survivors: a pilot study to explore fitness, cardiac regulation and biomarkers of the stress systems

  CON (n = 6) CMIT (n = 5) HIIT (n = 6)
Pre Post Pre Post Pre Post
LnVLF 2.98 ± 0.69 2.37 ± 1.03 4.93 ± 1.11 5.06 ± 1.00* 3.78 ± 0.90 3.86 ± 2.74
LnLF 4.88 ± 0.92 3.93 ± 1.08 6.75 ± 0.73 6.85 ± 0.67 4.72 ± 2.14 5.19 ± 2.85
LnHF 4.38 ± 0.82 3.83 ± 0.75 6.71 ± 1.26 7.07 ± 0.78 4.48 ± 2.07 5.50 ± 3.13
LnLF/HF 0.51 ± 0.74 0.10 ± 0.59 0.04 ± 1.23 − 0.22 ± 0.89 0.24 ± 1.43 − 0.31 ± 0.55
Mean RR (m/s) 845.70 ± 76.01 815.66 ± 58.21 902.69 ± 37.36 792.69 ± 90.86 834.07 ± 147.40 848.11 ± 165.45
Mean HR* (b/min) 71.37 ± 6.28 73.83 ± 5.07 66.61 ± 2.84 76.47 ± 8.47 74.12 ± 14.88 73.24 ± 15.64
LnRMSSD 3.01 ± 0.90 2.95 ± 0.96 3.94 ± 0.51 4.29 ± 0.60 3.09 ± 0.63 3.35 ± 1.62
  1. * time effect, Log (Ln), LnVLF very low frequency, LnLF low frequency, LnHF high frequency, LnLF/HF low frequency/high frequency, RR measure between the R waves, LnRMSSD root mean square of successive difference of R-R interval