Efficacy of a Low Dose of Estrogen on Antioxidant Defenses and Heart Rate Variability

Table 3

Power spectral analysis.

	Ovx (𝑁=5)	LE (𝑁=5)	HE (𝑁=5)
HRV (ms^2)	14.34±3.56	39.98±11.00^∗	69.62±27.32^∗
LFabs (ms^2)	2.49±1.53	5.03±1.89	8.09±7.04
HFabs (ms^2)	9.78±2.84	28.04±9.718^∗	53.35±29.96^∗
LFnu	20.22±5.20	16.67±5.12	11.05±3.03
HFnu	79.77±5.14	83.32±5.10	88.95±15.74
LF/HF	0.25±0.07	0.2±0.07	0.12±0.08

Data are mean ± SD. Ovx: ovariectomized group; HE: high dose estrogen-treated group; LE: low dose estrogen-treated group; HRV: heart rate variability; LFabs: absolute low frequency; HFabs: absolute high frequency; LFnu: normalized low frequency; HFnu: normalized high frequency. ^∗𝑃<0.05 versus Ovx.