Valsalva

This is called the "Valsalva maneuver," familiar as the "bearing down" people might do when lifting weights, defecating or even having sex.

Gizmodo Adrian Covert 2011

Also known as Valsalva maneuver, it's generally a bad habit that can lead to dizziness, fainting, and even stroke.

"It's an attack on my character, and it's very embarrassing, and an insult." Ann Althouse 2006

He must perform what’s called the Valsalva maneuver.

A Baby at Last! Mark L. Fuerst 2010

Do the Valsalva maneuver - Inhale, close your nose and mouth, and blow the air against your cheeks.

Unstick Your Ears After A Flight - The Consumerist 2009

Research has shown that various forms of CAP — aggressive gripping, jaw clenches, and core activation such as the Valsalva maneuver — can boost performance by roughly 15 to 20%.

Lonnie Lowery, Ph.D. - Cutting-Edge Muscle Science William Harryman 2009

It is no longer converted by the Valsalva maneuver.

Dr. Blog « BuzzMachine 2006

The practice of encouraging sustained, directed (Valsalva) bearing down efforts during the second stage of labour is widely advocated in many delivery wards.

4. CARE DURING THE SECOND STAGE OF LABOUR 1996

Sustained, directed bearing down efforts (Valsalva manoeuvre) during the second stage of labour (4.4).

6. CLASSIFICATION OF PRACTICES IN NORMAL BIRTH 1996

- Sustained (Valsalva) vs exhalatory bearing down in second stage of labour.

7. REFERENCES 1996

Both increase moderately during the initial Valsalva effect, followed by further marked increases during a period of 1 to 2 minutes after the electrical stimulus.

The Neuropsychiatric Guide to Modern Everyday Psychiatry Michael Alan Taylor 1993