Capnometric feedback training decreases 24-h blood pressure in hypertensive postmenopausal women

Table 2 Means and standard errors (S.E.) of each physiological measure before and after the capnometric training intervention (n = 16) and in the control group (n = 16), the significance of the differences in the post-intervention changes in each measure, and the significance of the differences between capnometric training and control groups

Group	Baseline mean ± S.E	After mean ± S.E	∆ (Mean ± S.E	p	Between group ∆
Group	Baseline mean ± S.E	After mean ± S.E	∆ (Mean ± S.E	p	X²	p
Capnometric Group
End tidal CO₂	37.0 ± 0.9	32.6 ± 1.4	− 4.3 ± 0.4	p < .01	11.22	p < .01
Breathing rate	14.8 ± 0.6	14.3 ± 0.7	− 0.5 ± 0.2	p < .01	0.13	p = .72
Systolic BP	144.2 ± 0.9	136.6 ± 1.1	− 7.6 ± 2.0	p < .01	6.78	p < .01
Diastolic BP	78.4 ± 1.9	76.8 ± 1.7	− 1.6 ± 1.3	p = .42	0.58	p = .44
Heart rate	67.0 ± 1.7	67.9 ± 0.1	+ 3.7 ± 1.8	p = .62	0.14	p = .71
Control group
End tidal CO₂	37.0 ± 0.6	36.7 ± 0.6	− 0.3 ± 0.1	p = .43
Breathing rate	14.4 ± .08	15.4 ± 0.8	+ 1.0 ± 0.9	p = .14
Systolic BP	138.3 ± 0.4	137.0 ± 1.3	− 1.3 ± 1.3	p = .65
Diastolic BP	78.2 ± 1.4	78.2 ± 1.3	0.0 ± 1.2	p = .65
Heart rate	70.6 ± 1.9	71.5 ± 2.0	+ 0.9 ± 1.1	p = .52

End tidal CO₂ = mmHg, Breathing rate = breaths/minute, Systolic and Diastolic BP = mmHg, Heart rate = bpm, ∆ = difference score, X² = Chi square

ISSN: 1471-2261