Table 3.

Comparison of entropy and detrended fluctuation analysis indices in salt‐sensitive and ‐protected rats

Study group/Treatment	Salt sensitive			Salt protected
	Low salt	High salt	ΔHS‐LS	Low salt	High salt	ΔHS‐LS
Systolic BP
Scaling exponents
α S	1.24 ± 0.05	1.12 ± 0.05b	−0.13 ± 0.07b	1.16 ± 0.12aᵻ	1.43 ± 0.06aᵻ, b	0.27 ± 0.06b
α L	1.01 ± 0.04a	1.21 ± 0.05a, b	0.20 ± 0.06bᵻ	1.01 ± 0.06	0.99 ± 0.05b	−0.02 ± 0.09bᵻ
Entropy
SampEn	1.43 ± 0.06	1.26 ± 0.06	−0.16 ± 0.10	1.51 ± 0.09a	1.24 ± 0.08a	−0.28 ± 0.09
Diastolic BP
Scaling exponents
α S	1.46 ± 0.04	1.37 ± 0.07	−0.09 ± 0.08	1.47 ± 0.10	1.51 ± 0.06	0.04 ± 0.10
α L	1.04 ± 0.04a	1.21 ± 0.05a, b	0.17 ± 0.05b	1.02 ± 0.05	0.97 ± 0.05b	−0.05 ± 0.08b
Entropy
SampEn	1.27 ± 0.04aᵻ	1.03 ± 0.09aᵻ bᵻ	−0.24 ± 0.14	1.37 ± 0.06a	1.21 ± 0.02a, bᵻ	−0.16 ± 0.06

Number of beats: 626–953; data shown as mean ± standard error averaged across rats within a group; ^a P < 0.05 low salt versus high salt (within group); ^b P < 0.05 salt sensitive versus salt protected (between groups; same treatment); ^aᵻ0.05 ≤ P < 0.1 low salt versus high salt (within group); ^bᵻ0.05 ≤ P < 0.1 salt sensitive versus salt protected (between groups; same treatment). α _S for N _beats = 4–10; α _L for N _beats = 11–100.

Δ_HS‐LS: changes calculated as (high‐salt − low‐salt) values.