. 2021 Feb 4;18(4):1490. doi: 10.3390/ijerph18041490

Table 3.

Results of tests of statistical surface temperatures of selected region of interest (ROI) during T₀ and T₁ for the study group and the control group.

Control Group							CO₂ Group						p-Value
	T₀		T₁				T₀		T₁
Region of interest					ΔT	p-value T₀ vs. T₁					ΔT	p-value T₀ vs. T₁	p-value T₁ placebo vs. T₁ CO₂
Region of interest	$\bar{X}$ temp. (°C)	±SD	$\bar{X}$ temp. (°C)	±SD	ΔT	p-value T₀ vs. T₁	$\bar{X}$ temp. (°C)	±SD	$\bar{X}$ temp. (°C)	±SD	ΔT	p-value T₀ vs. T₁	p-value T₁ placebo vs. T₁ CO₂
Arm anterior right	31.73	1.15	32.40	1.10	−0.67	0.682	32.13	1.14	32.01	0.12	0.84	0.075	0.205
Forearm anterior right	31.65	1.20	32.70	1.07	−1.04	0.982	31.76	0.87	31.65	0.11	0.78	0.007	0.001
Hand palmar right	28.71	2.91	31.79	1.51	−3.08	0.288	29.47	3.14	28.54	0.93	2.70	0.001	0.001
Arm posterior right	30.33	1.18	31.57	1.20	−1.24	0.973	30.34	1.41	30.22	0.12	1.27	0.001	0.001
Forearm posterior right	31.73	0.88	32.60	1.06	−0.86	0.296	31.69	1.04	31.28	0.41	1.11	0.004	0.001
Hand dorsal right	28.11	3.11	31.66	1.49	−3.56	0.108	29.40	2.65	28.01	1.39	3.10	0.001	0.001
Arm anterior left	31.85	1.27	32.57	1.17	−0.73	0.766	31.88	0.83	31.87	0.01	0.68	0.076	0.044
Forearm anterior left	31.75	1.21	32.73	1.16	−0.97	0.394	31.79	0.88	31.58	0.21	0.76	0.015	0.001
Hand palmar left	28.69	2.64	31.80	1.29	−3.11	0.233	29.85	2.97	28.70	1.14	3.42	0.001	0.001
Arm posterior left	30.17	1.21	31.43	1.06	−1.25	0.860	30.24	1.34	30.17	0.07	1.27	0.001	0.002
Forearm posterior left	31.65	1.19	32.56	1.30	−0.91	0.242	31.43	0.90	31.10	0.33	0.98	0.030	0.001
Hand dorsal left	28.31	2.63	31.31	1.50	−3.00	0.371	28.97	3.31	28.16	0.80	2.70	0.001	0.001
Thigh anterior right	30.04	1.29	32.08	1.27	−2.04	0.511	30.43	1.23	30.20	0.23	1.12	0.001	0.001
Leg anterior right	31.83	0.65	32.81	0.89	−0.98	0.025	32.00	1.15	31.24	0.76	1.05	0.001	0.001
Thigh posterior right	30.62	1.15	32.53	1.15	−1.91	0.079	30.90	1.17	30.30	0.60	1.09	0.001	0.001
Leg posterior right	31.01	0.78	32.28	0.75	−1.27	0.046	31.10	1.08	30.53	0.57	0.76	0.001	0.001
Thigh anterior left	30.24	1.65	32.13	1.30	−1.88	0.408	30.28	1.20	30.00	0.28	1.09	0.001	0.001
Leg anterior left	32.09	1.01	32.81	0.98	−0.72	0.092	31.62	1.38	31.01	0.62	1.02	0.031	0.001
Thigh posterior left	30.62	1.31	32.40	1.15	−1.78	0.175	31.04	1.19	30.59	0.45	1.01	0.001	0.001
Leg posterior left	31.11	0.67	32.25	0.77	−1.14	0.197	30.98	1.13	30.60	0.38	0.82	0.001	0.001
Chest	32.37	1.09	33.32	0.92	−0.95	0.767	32.47	0.83	32.54	−0.08	0.95	0.006	0.011
Abdomen	31.72	1.40	32.79	1.19	−1.07	0.272	31.60	1.10	31.24	0.36	1.08	0.015	0.001
Upper back	32.39	1.27	33.03	1.05	−0.63	0.775	32.40	1.00	32.32	0.08	0.79	0.103	0.034
Lower back	31.93	1.38	32.59	1.40	−0.66	0.507	31.93	1.18	31.71	0.21	0.97	0.214	0.022

p-value was calculated by two-sample t-test and Wilcoxon signed-rank test; T₀—measurements taken before intervention; T₁—measurements taken after 10 sham or dry CO₂ baths; ∆T—difference in the temperature between T₀ and T_1.