Why the study?
Does walking on a treadmill affect mean arterial pressure in cardiac patients compared to sitting?
Does walking on a treadmill affect mean arterial pressure in cardiac patients compared to sitting?
Exertional hypotension in cardiac patients appears to be driven by an inability to adequately increase stroke index during exercise.
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Exertional hypotension may relate to inadequate stroke index rise in cardiac patients; hypothesis-generating and requires prospective confirmation.
Hemodynamic studies during steady states of sitting and walking on a treadmill have shown a fall in mean arterial pressure in 10 of 16 cardiac patients. This was associated with a greater increase in peripheral resistance during sitting, and a failure to increase stroke index during walking. Cardiac index during exercise increased somewhat, largely because of greater acceleration of heart rate.
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Bruce et al. (1959) studied this question.
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