How to say BTV in English ?

[subaquaticus]

BTV = Béance Tubaire volontaire

it is the second equalization technique after Valsalva and before Frenzel...

 

[samdive]

we just call it BTV....

or hands free equalisation.

there's no real translation that I know of

S

 

[subaquaticus]

we just call it BTV....

or hands free equalisation.

there's no real translation that I know of

S

thanks... as far as I understood, Frenzel is also a hands free equalization, isn't it ?

 

[DeepThought]

Nope, Frenzel means that you force air with your tongue instead of your diaphragm (valsalva), your nose still has to be closed unless you can open your e-tubes at will (BTV).

 

[subaquaticus]

Nope, Frenzel means that you force air with your tongue instead of your diaphragm (valsalva), your nose still has to be closed unless you can open your e-tubes at will (BTV).

thanks for the precision...

anyway, once you own a paradisia nose-clip (as I will very soon) all equalization techniques become hands free...

I decided to liberate my hands...

 

[Panos Lianos]

BTV= Beance Tubaire Volontaire

In English: Voluntary Tubal Opening

 

[subaquaticus]

BTV= Beance Tubaire Volontaire

In English: Voluntary Tubal Opening

Poly eucharisto !

 

[pat fish]

Hi Panos
Hi Everybody

WHEN can we expect goggles and nose clips to be legal in competitions? how far is the process in AIDA?

Thank You Pat

 

[Rémi]

BTV= Beance Tubaire Volontaire

In English: Voluntary Tubal Opening

BTV= Béance Tubulaire Volontaire

That was close :duh

 

[subaquaticus]

BTV= Béance Tubulaire Volontaire

That was close :duh

Béance tubaire volontaire : il s'agit ici, par la simple volonté, d'exercer un effort sur les muscles qui permettent d'ouvrir les trompes. Naturellement les trompes s'ouvrent toutes les 2 à 3 minutes. On s'en rend compte notamment en montagne, c'est aussi ce qui se passe lorsque l'on baille.

tiré de
http://www.chasse-sous-marine.com/magazine/tecnik/compensation1.htm

Béance Tubaire Volontaire (B.T.V.)

Décrite par G. Delonca, la B.T.V. consiste à plonger " trompes ouvertes ", grâce au contrôle volontaire des muscles qui participent à leur ouverture, comme lors du bâillement par exemple.
Cela élimine tout risque barotraumatique.
Pour aider à la réalisation de la B.T.V., Fructus et Sciarli conseillent :

D'effectuer préalablement une manœuvre de type Valsalva ou Frenzel.
De prendre conscience de la position des muscles du voile du palais et du pharynx au moment de la sensation de plénitude de l'oreille.
De conserver ainsi cette posture d'ouverture tubaire en relâchant progressivement toute surpression.
De se concentrer pour retrouver cette posture, sans l'aide d'aucune surpression. Il s'agit de parvenir, spontanément, à replacer les muscles dans la position qui assure l'ouverture des trompes.

http://www.plongee-plaisir.com/oreilles/oreilles.htm

BTV : béance tubaire volontaire : il s'agit ici par la simple volonté d'exercer un effort sur les muscles qui permettent d'ouvrir les trompes. Naturellement les trompes s'ouvrent par cette méthode toutes les 2/3 minutes, on s'en rend compte notamment en montagne, c'est aussi ce qui se passe lorsque l'on baille... Apprentissage : différents exercices, et surtout un entraînement régulier, sont nécessaires à l'apprentissage de la méthode... Elle n'est malheureusement maîtrisée que par peu de personnes, lesquelles doivent de surcroît posséder des conduits auditifs relativement rectilignes... Libère les deux mains (amélioration du canard et de la coulée), méthode discrète (ouverture des trompes d'eustaches par simple volonté sans bruit), évite le risque de voile noir dû à la différence de pression au niveau des oreilles lorsque la tête est penchée, supprime les risques d'infections, supprime les barotraumatismes de l'oreille, supprime les phénomènes de surpression thoracique et rino-pharyngée, ne fonctionne pas chez tout le monde, méthode impossible en cas de rhume ou légers problèmes de sinus, de moins en moins efficace avec la profondeur car le tissu musculaire permettant l'ouverture des trompes est trop faible par rapport aux forces exercées par la pression hydrostatique

http://csm.appa.free.fr/dossiers/profondeur.php

 

[Rémi]

Looks like it depends where you look :hmm

http://csm.appa.free.fr/dossiers/apnee_compensation.php

http://perso.wanadoo.fr/plongee.passion/barotauma.htm

http://nicoblon.free.fr/courbaro.htm

I had never heard "Béance Tubaire Volontaire" before
But both seems to be used

 

[Rémi]

"Tubaire" just does not sound good here to me... which is very subjective .. ok
But a "tubule" is a very small "tube", so it is more likely to be tubulaire I think....
But that's not really important

 

[subaquaticus]

Looks like it depends where you look :hmm

http://csm.appa.free.fr/dossiers/apnee_compensation.php

http://perso.wanadoo.fr/plongee.passion/barotauma.htm

http://nicoblon.free.fr/courbaro.htm

I had never heard "Béance Tubaire Volontaire" before
But both seem to be used

Let us have a look at the Petit Robert ;

tubaire : (1836, Med) relatif aux trompes de Fallope (grossesse tubaire) ou aux trompes d'Eustache ( voir salpingo-)

tubulaire : (1766) qui a la forme d'un tube (chaudière tubulaire) ; qui est formé de tubes (meubles tubulaires)

Sachant que la béance n'est ni de forme cylindrique, ni constituée de tubes, mais concerne les trompes d'Eustache... elle est bien TUBAIRE et non TUBULAIRE...

La recherche de "béance tubaire" donne des textes manifestement sérieux rédigés par des ORL, tandis que "béance tubulaire" est utilisé dans des sources moins fiables...

Conclusion : notre ami grec avait raison !

 

[Panos Lianos]

Hi Panos
Hi Everybody

WHEN can we expect goggles and nose clips to be legal in competitions? how far is the process in AIDA?

Thank You Pat

It is VERY close. The new rules have been voted and they will be posted very soon.

 

[Rémi]

Conclusion : notre ami grec avait raison !

OK, I give up ... You are right :hmm

 

[subaquaticus]

"Tubaire" just does not sound good here to me... which is very subjective .. ok
But a "tubule" is a very small "tube", so it is more likely to be tubulaire I think....
But that's not really important

BTV has something to do with the Eustachian tube ( http://www.merriam-webster.com/cgi-bin/dictionary?book=Dictionary&va=eustachian+tube ) which is not at all very small

You also have the Malpighian tubule which is a group of long blind vessels opening into the posterior part of the alimentary canal in most insects and some other arthropods and functioning primarily as excretory organs.

You also have the seminiferous tubule which is one of the coiled threadlike tubules that make up the bulk of the testis and are lined with a layer of epithelial cells from which the spermatozoa are produced.

These "tubules" are much smaller than the Eustachian tube which is relevant here...

 

[subaquaticus]

Taken from this interesting web site :

http://www.paradise-divers.com/reading.htm

Equalizing Techniques

• Valsalva - increase nasopharynx pressure by holding nose and breathing against a closed glottis (throat);

• Toynbee - swallowing with mouth and nose closed - good for ascent!

• Frenzel - Valsalva while contracting throat muscles with a closed glottis;

• Lowry - Valsalva plus Toynbee - holding nose, gently trying to blow air out of nose while swallowing - easiest and best method!

• Edmonds - jutting jaw forward plus Valsalva and/or Frenzel (good method);

• BTV (Béance Tubaire Volontaire - Voluntary Tubal Opening) - Described by the French doctor Georges Deloncas, the BTV is a hands-free technique mostly used by free divers because it is very efficient even during a fast descent. Deloncas reported that a small percentage of divers (around 30%) are actually able to train their throat muscles to contract and open the Eustachian tubes on demand, as a prolonged action and not a simple spasm. The tubes' shape must be near perfect and a lot of training is required; it is, however, the ideal solution since it frees both hands, is none-forceful and works as well during descent and ascent;

• Miscellaneous - swallowing, wiggling jaws - good for ascent!

 

[Panos Lianos]

I think the website you mention has things mixed up a little. For the Valsalva, how can you equalize if your glottis is closed? The openings of the Eustachian tubes are ABOVE the glottis, so if you keep it closed, then the air can't reach them.

BTV is efficient in freediving, only if your physiology permits. I can do it on dry land and in the pool. But in the sea, because of the rapid pressure changes, I can't. For other people it works fine, usually up to a certain depth and then, most need to use the Frenzel to go deeper.

For the majority of people, the most efficient method is the Frenzel.

 

[subaquaticus]

For the majority of people, the most efficient method is the Frenzel.

I confess to my greatest shame that up to now I haven't really understood what the Frenzel is...

I think I do in dynamic apnea a BTV quite unaware of it...

In vertical diving I still need the Valsalva...

That is why I strongly envisage to acquire a Paradisia in order to be hands free while "Valsalva-ing"...

 

[subaquaticus]

I can do it on dry land and in the pool. But in the sea, because of the rapid pressure changes, I can't.

I think that it is the same for me as for you...