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. Author manuscript; available in PMC: 2011 Mar 29.
Published in final edited form as: Eur J Appl Physiol. 2010 Oct 2;111(3):497–507. doi: 10.1007/s00421-010-1670-9

Table 4.

Diastolic blood pressure variability at baseline and during LBNP −20 mmHg. Median (confidence interval)

Baseline LBNP Δ (LBNP-Baseline)
Control
(n=56) 		CFS
(n=14) 		p-
value* 		Control
(n=56) 		CFS
(n=14) 		Control
(n=56) 		CFS
(n=14) 		p-
value*
Variance
(mmHg2)

9.3
(8.4–12.4)

12.7
(7.9–17.4)
0.154

12.6
(10.2–13.7)

12.0
(10.0–14.6)

2.3
(0.4–4.7)

2.0
(−1.2–3.5)
0.333
Total Power
(mmHg2)

10.2
(8.9–11.5)

13.7
(9.4–18.3)
0.089

12.2
(10.5–14.7)

11.3
(10.7–17.4)

2.3
(0.4–4.5)

−0.4
(−3.1–2.4)
0.106
HF absolute units
(mmHg2)

0.35
(0.24–0.42)

0.31
(0.18–0.43)
0.883

0.30
(0.21–0.44)

0.26
(0.16–0.37)

0.03
(−0.06–0.06)

−0.06
(−0.14–0.09)
0.340
LF absolute units
(mmHg2)

1.86
(1.53–2.49)

2.52
(1.55–3.62)
0.403

3.41
(2.99–4.27)

3.44
(2.34–4.90)

1.50
(0.72–2.19)

0.74
(−0.37–2.61)
0.557
HF normalized
units (nu)

0.17
(0.11–0.22)

0.14
(0.09–0.21)
0.638

0.07
(0.05–0.13)

0.08
(0.05–0.10)

−0.05
(−0.08–0.01)

−0.05
(−0.15–0.01)
0.454
LF normalized
units (nu)

0.83
(0.78–0.89)

0.86
(0.79–0.91)
0.638

0.93
(0.87–0.95)

0.92
(0.90–0.95)

0.05
(0.01–0.08)

0.05
(0.01–0.15)
0.454
LF/HF 6.84
(4.20–9.97)		 7.17
(4.62–16.82)		 0.355 15.91
(8.02–19.79)		 14.55
(9.77–20.10)		 4.88
(2.21–7.55)		 5.68
(1.47–11.48)		 0.860
*

Wilcoxon-Mann-Whitney’s test. In order to reduce the methodological problem of multiple comparisons, statistical tests were only performed for the cardiovascular variable baseline and Δ (LBNP-Baseline)