Simple correlation matrix showing associations between Muscle Sympathetic Nerve Activity (MSNA), Reactive Hyperemic Index (RHI), Platelet concentration (PLT), Epidermal growth factor (EGF), Insulin-Like Growth Factor (IGF)-I, and physical activity (PA) for the study group.

<p><i>P</i>-values are indicated as: *<i>p</i>≤0.05; **<i>p</i>≤0.01; ***<i>p</i>≤0.005.</p

Muscle sympathetic nerve activity (MSNA) expressed as burst frequency (bursts/minute) and reactive hyperemic index (%) in 10 healthy controls, r = −0.8, p = 0.005.

<p>Muscle sympathetic nerve activity (MSNA) expressed as burst frequency (bursts/minute) and reactive hyperemic index (%) in 10 healthy controls, r = −0.8, p = 0.005.</p

Basic characteristics of the 10 (7 M/3 F) subjects shown in mean, SD and range.

<p>Basic characteristics of the 10 (7 M/3 F) subjects shown in mean, SD and range.</p

Physical activity expressed as hours per week and a) muscle sympathetic nerve activity (MSNA) expressed as burst frequency (bursts/minute) and b) reactive hyperaemic index (%) in 10 healthy controls, (r = −0.79, p = 0.006 and r = 0.83, p = 0.004, respectively).

<p>Physical activity expressed as hours per week and a) muscle sympathetic nerve activity (MSNA) expressed as burst frequency (bursts/minute) and b) reactive hyperaemic index (%) in 10 healthy controls, (r = −0.79, p = 0.006 and r = 0.83, p = 0.004, respectively).</p