Cardiovascular and Thermal Response to Dry-Sauna Exposure in Healthy Subjects
Table 5
Resting values of heart rate and blood pressure variability parameters; all data are expressed as means ± standard deviations, and values (abbreviations are listed in the “Introduction” Section 1).
Parameter
before_S
after_S
S_ + 3 h
S_ + 6 h
Heart rate variability
LFnu-RRI (%)
49.2 ± 20.5
62.6 ± 15.4
54.5 ± 21.1
51.1 ± 21
0.2406
HFnu-RRI (%)
50.8 ± 20.5
37.4 ± 15.4
45.5 ± 21.1
48.9 ± 21
0.2406
LF-RRI (ms2)
1587.9 ± 1221.1
1007.9 ± 752.8
931.6 ± 500.9
1569.4 ± 1498.4
0.5221
HF-RRI (ms2)
1643.8 ± 971.7
493.6 ± 247
1068.7 ± 1050.3
1561.5 ± 1665.6
PSD-RRI (ms2)
4058.3 ± 1876.7
1817.2 ± 1069
2331.3 ± 1593.2
3678.9 ± 3266.9
LF/HF-RRI (n/1)
1.6 ± 1.9
2.2 ± 1.1
2.2 ± 2.2
1.7 ± 1.7
0.1543
LF/HF (n/1)
1.5 ± 1.5
2.1 ± 0.7
1.9 ± 1.6
1.2 ± 0.8
Diastolic blood pressure variability
LFnu-dBP (%)
49.9 ± 13.2
65.4 ± 11.9
57.6 ± 13.1
44.2 ± 21
HFnu-dBP (%)
15.3 ± 10.4
6.3 ± 3.1
13.4 ± 11
16.8 ± 16.9
LF-dBP (mmHg2)
3.4 ± 2.4
10.8 ± 16.2
3.3 ± 2.5
2.9 ± 1.7
0.6822
HF-dBP (mmHg2)
0.8 ± 0.4
0.7 ± 0.9
0.5 ± 0.3
1.1 ± 1.4
PSD-dBP (mmHg2)
6.4 ± 3.2
20.2 ± 35.6
5.4 ± 3.1
6.7 ± 2.8
0.4663
LF/HF-dBP (n/1)
6.1 ± 5.6
13.2 ± 6
8.5 ± 6.8
5.6 ± 5.1
Systolic blood pressure variability
LFnu-sBP (%)
43.8 ± 12.8
55.5 ± 10.3
47.2 ± 17.1
37.1 ± 15.3
HFnu-sBP (%)
13.9 ± 9.2
10.6 ± 6.8
9.9 ± 5.3
15.4 ± 12.6
0.1993
LF-sBP (mmHg2)
7.6 ± 8.2
13 ± 16.1
8.7 ± 6.9
5.9 ± 6.5
0.7173
HF-sBP (mmHg2)
2 ± 2.5
1.5 ± 1
1.9 ± 1.8
1.6 ± 1.1
0.6822
PSD-sBP (mmHg2)
15.9 ± 15
26.5 ± 37.6
18 ± 10.8
16.1 ± 14
0.8964
LF/HF-sBP (n/1)
4.5 ± 2.9
8.3 ± 5.4
6.0 ± 3.5
4.3 ± 4.5
Indicates significantly different results; all spectral parameters are expressed as mean ± standard deviation.
