In aged men central vessel transmural pressure is reduced by brief Valsalva manoeuvere during strength exercise
Wiktor Niewiadomski , Anna Pilis , Anna Strasz , Dorota Laskowska , Anna Gąsiorowska , Karol Pilis , Gerard Cybulski
AbstractA brief Valsalva manoeuvre, lasting 2–3 s, performed by young healthy men during strength exercise reduces transmural pressure acting on intrathoracic arteries. In this study, we sought to verify this finding in older men. Twenty normotensive, prehypertensive and moderately hypertensive otherwise healthy men 46–69 years old performed knee extensions combined with inspiration or with brief Valsalva manoeuvre performed at 10, 20 and 40 mmHg mouth pressure. Same respiratory manoeuvres were also performed at rest. Non-invasively measured blood pressure, knee angle, respiratory airflow and mouth pressure were continuously registered. In comparison to inspiration, estimated transmural pressure acting on thoracic arteries changed slightly and insignificantly during brief Valsalva manoeuvre at 10 and 20 mmHg mouth pressure. At 40 mmHg mouth pressure, transmural pressure declined at rest (−8•8 ± 11•4 mmHg) and during knee extension (−12•1 ± 11•9 mmHg). This decline ensued, as peak systolic pressure increase caused by this manoeuvre, was distinctly <40 mmHg. Only a main effect of mouth pressure was revealed (P<0•001) and neither exercise nor interaction between these factors, what suggests that transmural pressure decline, depended mainly on intrathoracic pressure developed during brief Valsalva manoeuvre. Resting blood pressure did not influence the effect of brief Valsalva manoeuvre on transmural pressure.
|Journal series||Clinical Physiology and Functional Imaging, ISSN 1475-0961|
|Publication size in sheets||0.5|
|Keywords in Polish||Krótka próba Valsalwy, nadciśnienie, mężczyźni, ciśnienie transmuralne|
|Keywords in English||brief Valsalva manoeuvre; elderly; hypertension; men; strength training; transmural pressure|
|ASJC Classification||; ;|
|Score|| = 15.0, 30-01-2020, ArticleFromJournal|
= 15.0, 30-01-2020, ArticleFromJournal
|Publication indicators||= 0; = 0; : 2013 = 0.678; : 2013 = 1.376 (2) - 2013=1.425 (5)|
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