Irisin Is Correlated with Blood Pressure in Obstructive Sleep Apnea Patients

Table 1

Demographic characteristics of the subjects in this study.

	Control	Nonsevere OSA	Severe OSA	Quite severe OSA	value
N	14	19	18	21	—
Age (years)	33.93 ± 7.74	40.58 ± 8.07	45.44 ± 10.03	42.10 ± 11.38	0.012
Weight (kg)	66.74 ± 8.23	82.54 ± 12.13	86.47 ± 10.00	92.89 ± 14.31^#	≤0.001
Height (m)	1.72 ± 0.06	1.75 ± 0.06	1.75 ± 0.05	1.72 ± 0.06	0.221
BMI (kg/cm^2)	22.62 ± 2.55	26.78 ± 3.05	28.32 ± 2.88	31.16 ± 3.60^##&	≤0.001
NC (cm)	37.68 ± 2.44	41.90 ± 3.24	42.39 ± 2.17	44.24 ± 2.57^#	≤0.001
WC (cm)	89.71 ± 7.22	98.16 ± 7.85	102.08 ± 5.91	108.98 ± 8.74^##&	≤0.001
HC (cm)	97.18 ± 4.77	103.43 ± 5.23	107.19 ± 3.83	111.06 ± 7.41^#	≤0.001
WC/HC	0.87 ± 0.03	0.91 ± 0.02	0.93 ± 0.03	0.95 ± 0.03^##&	≤0.001
AHI (events/h)	3.01 ± 1.54	14.86 ± 7.64	46.97 ± 9.56^##	80.57 ± 12.26^##&&	≤0.001
SpO2 nadir	91.71 ± 3.50	84.42 ± 6.62	74.56 ± 9.03^#	63.76 ± 11.21^##&&	≤0.001
ESS	10.36 ± 4.22	10.89 ± 5.03	15.11 ± 4.97^#	16.86 ± 4.97^##	≤0.001
SBP (mmHg)	116.71 ± 7.04	128.58 ± 10.12	131.56 ± 12.62	147.81 ± 15.77^##&&	≤0.001
DBP (mmHg)	79.50 ± 6.61	87.47 ± 8.83	88.28 ± 7.16	100.48 ± 12.68^##&&	≤0.001
PA (MET-min/week)	792.00 ± 248.90	822.29 ± 379.17	965.83 ± 538.12	891.38 ± 643.29	≥0.05

Data are expressed as the mean ± SD or means with 95% confidence intervals. AHI, apnea-hypopnea index; BMI, body mass index; SpO₂, peripheral capillary oxygen saturation; ESS, Epworth Sleepiness Scale; NC, neck circumference; WC, waist circumference; HC, hip circumference; WC/HC, waist circumference/hip circumference; SBP, systolic BP; DBP, diastolic BP; PA, physical activity; MET: standard metabolic equivalent unit. vs. the control group; vs. the control group; vs. the nonsevere OSA group; vs. the nonsevere OSA group; vs. the severe OSA group; vs. the severe OSA group.