Blood pressure and blood flow and aging.

[junkeeroo]

Hi All,

I'm trying to get my head around a question regarding factors (outside of cardiac output and hormone) that affect a middle-aged man's blood pressure and blood flow during aerobic exercise.

I understand the other factors affecting BP are blood volume, blood viscosity, resistance, and elasticity of fibres, and those affecting flow are size of blood vessel lumen, blood viscosity, and total blood vessel length.

What I'm struggling with is if age affects blood volume and blood viscosity?

Thanks.