Week 5 Flashcards
1
Q
how exercise helps with artery health
A
exercise -> increase hormone nitric oxide production (shear stress of arterial pathway) -> artery dilation -> decreased BP -> decrease AS risk
2
Q
nitric oxide
A
- produced by endothelial cells
3
Q
anti-atherogenic effects of endothelium and NO
A
- prevent AS symptoms
- prevents monocytes and macrophages in subintimal space
- prevents LDL etnering
- VD decreasing shear and pressure
- decreased smooth muscle proliferation
- decreased superoxide anions, ox-LDL and foam cell formation
4
Q
how endurance stimualtes eccentric hypetrophy of heart
A
increased volume of ventricle -> increased stroke volume -> eccentric hypertrophy (walls thickening and diameter increase) -> increased VO2 peak
5
Q
impact of regular exercise (bouchard study)
A
- plasma HDL-C decrease
- plasma triclygeride decrease
- resting systolic BP decrease
- plasma fasting insulin increase
