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Initial orthostatic hypotension (IOH), or a brief drop in blood pressure and an increase in heart rate that causes dizziness when a person stands up, is a common condition
.
Syncope, dizziness, vertigo, or IOH-induced loss of consciousness, affects up to 40% of the general population, and there is currently no drug treatment for IOH symptoms
New research published today in Heart Rhythm offers two exercises to improve this symptom, such as activating lower body muscles before and after standing for effective control
.
This study investigated the efficacy of pre- and post-standing movements in reducing blood pressure drop, as well as symptoms predisposing to standing in IOH patients
For example, by activating the muscles of the lower body before and after standing to achieve effective control
Nasia A.
Sheikh et al, Lower body muscle preactivation and tensing mitigate symptoms of initial orthostatic hypotension in young females, Heart Rhythm (2022).
DOI: 10.
1016/j.
hrthm.
2021.
12.
030
Sheikh et al, Lower body muscle preactivation and tensing mitigate symptoms of initial orthostatic hypotension in young females, Heart Rhythm (2022).
DOI: 10.
1016/j.
hrthm.
2021.
12.
030
Study participants included 24 young women (mean age 32±8 years) with a history of fainting immediately after standing and more than four syncope per month
.
Study participants required a significant drop in systolic blood pressure of at least 40 mmHg while standing to meet the diagnostic criteria for daily IOH symptoms
diagnosis
The study found that pre-activation of lower body muscles by repeated knee lifts before standing (PREACT) and by cross-legging and tensing of lower body muscles immediately after standing (TENSE) were both effective in improving blood pressure drop, which reduced post-standing symptoms
.
The researchers analyzed the difference between the two movements, PREACT, which works by increasing cardiac output, and TENSE, which works by increasing stroke
Lower-body muscle preactivation by repeated knee lifts before standing (PREACT), and by cross-legs and lower-body muscle tensioning immediately after standing (TENSE), were both effective in improving blood pressure drop, which reduced post-stance symptoms
Lower extremity muscle preactivation (PREACT) and lower extremity muscle tightening (TENSE) can effectively reduce the drop in mean arterial pressure during standing and improve initial symptoms of orthostatic hypotension
Lower extremity muscle preactivation (PREACT) and lower extremity muscle tightening (TENSE) can effectively reduce the drop in mean arterial pressure during standing and improve initial symptoms of orthostatic hypotension
There was no significant difference in mean arterial pressure (MAP) between the control and PREACT groups when in a sitting position
.
However, after standing, MAP was significantly elevated in the PREACT group (Panel A)
Blood vessel
Absolute hemodynamic values of muscle preactivation (PREACT), muscle tension (TENSE), and no intervention (Control) at baseline (BSL), intervention (INTV), and after standing (BPnadir)
.
The overall trend for each hemodynamic parameter during each sitting-to-standing period is shown
Absolute hemodynamic values of muscle preactivation (PREACT), muscle tension (TENSE), and no intervention (Control) at baseline (BSL), intervention (INTV), and after standing (BPnadir)
Activating lower body muscles before and after standing did not result in different mean arterial pressures
.
The increase in heart rate after the PREACT exercise did not change compared with the TENSE exercise
.
There was no significant difference in increases in stroke volume or cardiac output after PREACT intervention compared with TENSE maneuvers
.
Compared with TENSE, the decrease in systemic vascular resistance was more pronounced after PREACT maneuver
.
VOSS symptom scores in the PREACT group were similar to those in the TENSE group
.
"Almost everyone has at some point experienced dizziness after standing up,
" explains Satish R.
Raj, MD, MSCI, FHRS, professor of cardiac sciences at the Libin Cardiovascular Institute, University of Calgary's Cumming School of Medicine, Canada
.
"For some people, this happens frequently, possibly several times a day, and this will have a negative impact on their quality of life
.
We hope to further explore treatments to improve the quality of life of people with IOH
.
"
References:
References:Nasia A.
Sheikh et al, Lower body muscle preactivation and tensing mitigate symptoms of initial orthostatic hypotension in young females, Heart Rhythm (2022).
DOI: 10.
1016/j.
hrthm.
2021.
12.
030
Sheikh et al, Lower body muscle preactivation and tensing mitigate symptoms of initial orthostatic hypotension in young females, Heart Rhythm (2022).
DOI: 10.
1016/j.
hrthm.
2021.
12.
030 Nasia A.
Sheikh et al, Lower body muscle preactivation and tensing mitigate symptoms of initial orthostatic hypotension in young females, Heart Rhythm (2022).
DOI: 10.
1016/j.
hrthm.
2021.
12.
030 Leave a comment here