Ageing and endurance training effects on quantity and quality of pulmonary vascular bed in healthy men

Respiratory Research

Table 2 Univariate analyses assessing the factors associated with resting capillary blood volume and slope of DL _CO /work relationship

	Resting capillary blood volume, mL		Slope of DL_CO/work relationship, mmol/min/kPa/% peak work rate
Linear regression, pearson	r value	P value	r value	P value
Age, years	-0.545	<0.001	-0.258	0.041
Height, cm	0.537	<0.001	0.324	0.009
Peak $\dot{V} {O_{2}}_{,}$ mL/kg/min	0.390#	0.002	0.244	0.045
Sport practice, hours/week*	0.360	0.006	0.278	0.034
Vigorous-IPAQ, MET-min/week	0.356	0.004	0.264	0.036
Total-IPAQ, MET-min/week	0.116	0.364	0.218	0.086

*sports were rowing (=19) triathlon (n = 6) and miscellaneous (n = 7) for the 32 endurance-trained men. The Vigorous-IPAQ domain was clearly related to sport practice duration (r² = 0.64; p < 0.0001).
#: the Pearson coefficient increased to 0.53 after excluding the two outliers using the Tietjen and Moore method (that is consistent with the r value of 0.60 for the same relationship in the study of Lalande et al. [4]).

ISSN: 1465-993X