Intermittent compression of the calf muscle as a countermeasure to protect blood pressure and brain blood flow in upright posture in older adults

Purpose Orthostatic hypotension, leading to cerebral hypoperfusion, can result in postural instability and falls in older adults. We determined the efficacy of a novel, intermittent pneumatic compression system, applying pressure around the lower legs, as a countermeasure against orthostatic stress...

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Bibliographic Details
Published in:European journal of applied physiology 2021-03, Vol.121 (3), p.839-848
Main Authors: Zuj, K. A., Hedge, E. T., Milligan, J. D., Peterson, S. D., Hughson, R. L.
Format: Article
Language:English
Subjects:
Biomedical and Life Sciences
Biomedicine
Blood flow
Blood pressure
Cerebral blood flow
Compression
Human Physiology
Hypotension
Leg
Occupational Medicine/Industrial Medicine
Older people
Original Article
Orthostatic hypotension
Posture
Sports Medicine
Ultrasound
Walking
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Summary:Purpose Orthostatic hypotension, leading to cerebral hypoperfusion, can result in postural instability and falls in older adults. We determined the efficacy of a novel, intermittent pneumatic compression system, applying pressure around the lower legs, as a countermeasure against orthostatic stress in older adults. Methods Data were collected from 13 adults (4 male) over 65 years of age. Non-invasive ultrasound measured middle cerebral artery blood velocity (MCAv) and finger photoplethysmography measured mean arterial blood pressure (MAP). Intermittent lower leg compression was applied in a peristaltic manner in the local diastolic phase of each cardiac cycle to optimize venous return during 1-min of seated rest and during a sit-to-stand transition to 1-min of quiet standing with compression initiated 15 s before transition. Results During seated rest, compression resulted in a 4.5 ± 6.5 mmHg increase in MAP, and 2.3 ± 2.1 cm/s increase in MCAv ( p  
ISSN:1439-6319
1439-6327
DOI:10.1007/s00421-020-04547-7