. 2017 Dec 12;8:1048. doi: 10.3389/fphys.2017.01048

Table 3.

Changes in systolic arterial pressure (SAP) and pulse interval (PI) variabilities and respective spectral components induced by training (T) or sedentary (S) protocols in adult SHR and WKY groups.

Groups/ weeks	SAP variability (mmHg²)	LF-SAP (mmHg²)	PI variability (ms²)	LF-PI (ms²)	HF-PI (ms²)	LF/HF ratio	α LF (ms²/mmHg²)	α HF (ms²/mmHg²)
WKY
S₀ = T₀	40.39 ± 2.81	4.69 ± 0.93	38.87 ± 12.48	1.90 ± 0.21	9.69 ± 0.78	0.20 ± 0.02	0.65 ± 0.09	1.59 ± 0.55
T₁	33.31 ± 3.68	4.22 ± 1.32	79.72 ± 16.45	2.66 ± 0.71	11.55 ± 2.46	0.22 ± 0.02	1.16 ± 0.28	2.95 ± 0.67
T₂	29.84 ± 5.18	3.47 ± 0.45	77.16 ± 19.35	2.82 ± 1.01	10.56 ± 2.19	0.21 ± 0.04	1.05 ± 0.10^#	3.03 ± 0.56^#
T₄	31.52 ± 3.20	3.09 ± 0.49	80.18 ± 6.90^#	2.37 ± 0.64	11.18 ± 1.26	0.21 ± 0.05	1.06 ± 0.17^#	2.93 ± 0.77
T₈	30.95 ± 2.57	2.70 ± 0.85	92.22 ± 19.94	1.43 ± 0.19^†^#	9.15 ± 1.03	0.16 ± 0.02^†	1.09 ± 0.14^#^†	3.27 ± 0.41^#^†
S₈	43.73 ± 9.22	4.70 ± 0.48	51.50 ± 7.54	2.99 ± 0.52	10.29 ± 1.93	0.27 ± 0.06	0.67 ± 0.07	2.08 ± 0.26
SHR
S₀ = T₀	59.32 ± 7.47^*	17.54 ± 3.29^*	23.89 ± 3.69	2.43 ± 0.36	8.61 ± 0.88	0.24 ± 0.02	0.24 ± 0.03^*	1.01 ± 0.20
T₁	56.42 ± 8.23^*	11.11 ± 2.24^*	49.04 ± 3.07	2.67 ± 0.63	8.72 ± 1.24	0.28 ± 0.04	0.41 ± 0.09^*	1.23 ± 0.16^*
T₂	49.51 ± 8.81^*	10.27 ± 1.75^*^#	50.83 ± 13.29	1.83 ± 0.44	14.50 ± 1.66^#	0.15 ± 0.02^#	0.41 ± 0.08^*	1.27 ± 0.21^*
T₄	48.34 ± 4.62^*	9.03 ± 1.23^*^#	67.66 ± 8.27^#	1.84 ± 0.41	12.32 ± 2.87	0.17 ± 0.03^#	0.57 ± 0.07^*^#	1.57 ± 0.16
T₈	45.62 ± 4.97^*^†	9.62 ± 1.38^*^#^†	106.12 ± 13.27^#^†	1.44 ± 0.28	16.30 ± 3.69^*^#^†	0.16 ± 0.01^#^†	0.55 ± 0.07^*^#^†	2.15 ± 0.54^#^†
S₈	128.14 ± 20.29^*^#	24.15 ± 5.96^*	38.54 ± 6.80	2.06 ± 0.31	7.79 ± 0.68	0.24 ± 0.03	0.29 ± 0.04^*	0.88 ± 0.13^*

Values are means±SEMs. LF, low-frequency component; HF, high-frequency component. αLF and αHF represent the spontaneous baroreflex sensitivity calculated with the LF or HF components of PI and corresponding SAP components. Measurements were made in 4–5 WKY/subgroup and 8-10 SHR/subgroup. Significances (P < 0.05) are

vs. week-matched WKY;

vs. respective week 0;

^†

vs. respective S₈.