Methodological aspects for accelerometer-based assessment of physical activity in heart failure and health

Table 1 Subjects characteristics grouped by patients with heart failure and healthy individuals

Variable	HEART (n = 56)	HEALTH (n = 299)
Female sex, n (%)	13 (23)	151 (51)
Age, years (range)	66 ± 13 (26 – 89)	54 ± 19 (21 – 91)
Height, cm	172 ± 9	171 ± 9
Body mass, kg	82.7 ± 16.9	69.6 ± 9.0
Smoking status, n (%)
Smokers	5 (10)	0 (0)
Never smoked	27 (53)	238 (80)
Ex-smoker > 10 years	19 (37)	61 (20)
NYHA class, n (%)
I	26 (47)	0 (0)
II	18 (33)	0 (0)
III	11 (20)	0 (0)
Daily accelerometer wear time, min	1434.2 ± 44.2	1434.8 ± 42.4
\(\overset{.}{\mathrm{V}}\mathrm{O}_{2\text{peak}}\), mL^.kg^−1.min⁻¹ (range)	21.5 ± 6.4 (10.2 – 39.5)	34.4 ± 9.9 (14.2 – 65.1)
NT-proBNP pg/mL	589.0 ± 677.2	119.9 ± 259.4

Data are presented as mean ± SD unless stated otherwise. There were missing data in the heart failure group (HEART) for smoking status (n = 5), NYHA class (n = 1) and NT-proBNP (n = 1). Among the healthy participants (HEALTH), data was missing for NT-proBNP (n = 1). Abbreviations: NYHA class New York Association functional classification, \(\overset{.}{\mathrm{V}}\mathrm{O}_{2\text{peak}}\) Peak oxygen uptake, NT-proBNP N-terminal pro b-type natriuretic peptide, SD Standard deviation.

ISSN: 1471-2288