Time Evolution of Sublingual Microcirculatory Changes in Recreational Marathon Runners

Table 1

Baseline characteristics of the study participants.

Variables	Marathon runners; ()	Controls; ()	p
Age (yr)			0.106
Mass (kg)			0.238
Height (cm)			0.291
Body mass index (kg/m^2)			0.531
VO2max (mL⋅kg^−1⋅min^−1)			0.004
Mean arterial pressure (mmHg)			0.002
Heart rate (beats/min)			0.128
Stroke volume (mL)			0.687
Cardiac index (L/min/m^2)			0.276
SVRI (dyne⋅sec/cm^5/m^2)			0.005
MFI			0.898
PPV (%)			0.734
FCD (mm/mm^2)			0.041
TVD (mm/mm^2)			0.040

Data are presented as mean ± SD. VO₂max, maximum oxygen uptake; SVRI, systemic vascular resistance index; MFI, microvascular flow index of small vessels; PPV, percentage of perfused small vessels; TVD, total vessel density of small vessels; FCD, functional capillary density. compared with controls.