Sympathovagal Imbalance in Prehypertensive Offspring of Two Parents versus One Parent Hypertensive

Table 3

Time domain indices of HRV recorded in supine position of normotensive and prehypertensive offspring of hypertensive parents.

Parameters	Normotensive offspring		Prehypertensive offspring		P values
	Group I	Group II	Group III	Group IV
	(𝑛=45)	(𝑛=68)	(𝑛=32)	(𝑛=20)
Mean RR (s)	0.845±0.146	0.856±0.151	0.774±0.140^#	0.786±0.142	0.0313
RMSDD (ms)	26.65±11.30	27.20±12.20	19.80±9.70^∗,^##	23.30±10.30	0.0151
NN50	21.70±8.40	22.10±10.10	18.80±7.40	21.90±8.50	0.3663
pNN50	6.02±3.05	6.40±3.10	4.70±2.35	5.65±2.50	0.0546

Data presented are mean ± SD; Group I: normotensive offspring of both parents hypertensive; Group II: normotensive offspring of one parent hypertensive; Group III: prehypertensive offspring of both parents hypertensive; Group IV: prehypertensive offspring of one parent hypertensive; the ∗mark indicates comparison with Group I, and the #mark indicates comparison with group II. ^∗𝑃<0.05; ^#𝑃<0.05; ^##𝑃<0.01.