The Importance of the Double Product in the Six-Minute Walk Test to Predict Myocardial Function

Table 1

(a) Groups characteristics in terms of age, body weight, and selected laboratory parameters

	Patients without HF; (n=120)	Patients with HF; (n=292)	p
Age (yrs)	72 ±0,94	74,1 ±0,58	ns
BMI	29,14 ±0,49	30,38 ±0,31	< 0,05
Hemoglobin (g/dl)	13,54 ± 0,12	13,25 ±0,12	ns
TSH (uUI/l)	1,86 ± 0,26	2,09 ±0,34	ns
Creatinine (g/dl)	0,90 ± 0,02	0,98 ± 0,02	<0,05

(b) Groups characteristics in terms of the presence of risk factors for atherosclerosis

	Patients without HF; (n=120)	Patients with HF; (n=292)	p
Hypertension (% of population)	85	88	ns
Lipid disorders (% of population)	64	58	ns
Diabetes mellitus (% of population)	20	30	< 0,05

(c) Groups characteristics in terms of age, body weight, and selected laboratory parameters. Normal font: comparison of groups I and III, bold: comparison of groups II and III, italics: comparison of groups I and II

	without HF; (n=119)	HFpEF; (n=192)	HF (↓EF); (n=102)	p
Age (yrs)	72 ±0,94	75,75 ± 0,65	71,49 ± 1,08	<0,05; 0,05
BMI	29,14 ±0,49	31,23 ± 0,38	28,91 ± 0,49	<0,05; <0,05
Hemoglobin (g/dl)	13,54 ± 0,12	13,22 ± 0,11	13,29 ±0,26	ns
TSH (uUI/l)	1,86 ± 0,26	2,41 ± 0,52	1,55 ± 0,13	ns
Creatinine (g/dl)	0,90 ± 0,02	0,91 ±0,02	1,10 ±0,05	< 0,05; <0,05

(d) The incidence of symptoms during the walking test

	Patients without HF; (n=120)	Patients with HF; (n=292)	p
Dyspnea during walking test (% of population)	17,6	28,1	<0,05
Feeling the load during the walking test (average score in Borg scale)	7,74 ± 0,25	8,65 ± 0,19	< 0,05