cito da una discussione in corso su TGR un dato che non sapevo. E' uno studio comparativo della società svizzera delle valanghe tra ABS e snowpulse (allora ancora a stadio di prototipo). Purtroppo è solo in tedesco, che non conosco, Greg di TGR ha messo una sua traduzione in inglese (immagino si più facile da comprendere), se qualcuno che sa il tedesco non è d'accordo sarei grato di ogni eventuale commento...
ecco il post di greg:
... there has been one study that had scientific standards conducted by the slf (www.slf.ch) in 2001: http://www.swissfungi.ch/slf/schnee-...ldversuche.pdf (in german)
to cite:
- Die Puppen mit Mono- und dualen Airbags, kamen tendenziell auf dem Bauch oder Rücken zum Liegen. Dabei waren die Atmungsorgane oft vom Schnee bedeckt.
- Die kragenförmigen Airbags der avagear-Rettungswesten führten in allen drei Fällen zu einer Teilverschüttung der Versuchspuppen, d.h. der Kopf und damit die Atmungsorgane kamen dabei bei z.T. sitzender oder stehender Haltung der Dummies über der Schneeoberfläche zum Liegen.
- Die im Halswirbelsäulen-Bereich des Messdummies gemessenen Belastungen liegen in einem Bereich, der auch tödliche Verletzungen zur Folge haben kann. Es gibt Hinweise, dass die Belastungen durch das Tragen der kragenförmigen „avagear“-Rettungsweste allenfalls gemildert werden können, dass sie aber ebenfalls noch im kritischen Bereich liegen dürften.
(what it says is:
* there are hints, that the snowpulse design can reduce the risk of mortal injuries to the cervical spine.
* dummies with abs design were found mostly lying on their back or belly, the respiratory system was often covered with snow.
* dummies with snowpulse design were found mostly in a sitting and upward position, head and respiratory system were above the snow surface.
the snowpulse system was still in development and they tested only a prototyp. still the conclusion back than was exactly the opposite of what abs are claiming now.
qui c'è una polemica sul fatto che la ABS nel suo sito dice che centinaia di studi sostengono la superiorità di ABS su snowpulse. Greg contesta dicendo che...
the hundreds of "case studies" they are referring to are the reports they get from their customers when they return to the shop to pay 80.- euros to get their system recharged after they got into an avalanche. they keep record of those "studies" on their side. they have repeatedly misused this data in the past to forge statistics to "prove" how their system reduces the mortality rate. they have been advertising with borderline slogans for years suggesting that you can't be buried with abs...
there has never been a study comparing the systems except for the one in 2001. in my eyes they are blatantly lying and i have to add, i am not really surprised. i'd be very varied giving them a dime even if snowpulse didn't exist simply for their deceiving campaigns pushing their sales on a subject that requires information not disinformation
i think the answer to the question is rather simple. would you prefer sliding down over rocks face and belly down or feet and bud down. apart from that i think it would be advantageous to have your head above the snow if you are unconscious or heavily injured.
ecco il post di greg:
... there has been one study that had scientific standards conducted by the slf (www.slf.ch) in 2001: http://www.swissfungi.ch/slf/schnee-...ldversuche.pdf (in german)
to cite:
- Die Puppen mit Mono- und dualen Airbags, kamen tendenziell auf dem Bauch oder Rücken zum Liegen. Dabei waren die Atmungsorgane oft vom Schnee bedeckt.
- Die kragenförmigen Airbags der avagear-Rettungswesten führten in allen drei Fällen zu einer Teilverschüttung der Versuchspuppen, d.h. der Kopf und damit die Atmungsorgane kamen dabei bei z.T. sitzender oder stehender Haltung der Dummies über der Schneeoberfläche zum Liegen.
- Die im Halswirbelsäulen-Bereich des Messdummies gemessenen Belastungen liegen in einem Bereich, der auch tödliche Verletzungen zur Folge haben kann. Es gibt Hinweise, dass die Belastungen durch das Tragen der kragenförmigen „avagear“-Rettungsweste allenfalls gemildert werden können, dass sie aber ebenfalls noch im kritischen Bereich liegen dürften.
(what it says is:
* there are hints, that the snowpulse design can reduce the risk of mortal injuries to the cervical spine.
* dummies with abs design were found mostly lying on their back or belly, the respiratory system was often covered with snow.
* dummies with snowpulse design were found mostly in a sitting and upward position, head and respiratory system were above the snow surface.
the snowpulse system was still in development and they tested only a prototyp. still the conclusion back than was exactly the opposite of what abs are claiming now.
qui c'è una polemica sul fatto che la ABS nel suo sito dice che centinaia di studi sostengono la superiorità di ABS su snowpulse. Greg contesta dicendo che...
the hundreds of "case studies" they are referring to are the reports they get from their customers when they return to the shop to pay 80.- euros to get their system recharged after they got into an avalanche. they keep record of those "studies" on their side. they have repeatedly misused this data in the past to forge statistics to "prove" how their system reduces the mortality rate. they have been advertising with borderline slogans for years suggesting that you can't be buried with abs...
there has never been a study comparing the systems except for the one in 2001. in my eyes they are blatantly lying and i have to add, i am not really surprised. i'd be very varied giving them a dime even if snowpulse didn't exist simply for their deceiving campaigns pushing their sales on a subject that requires information not disinformation
i think the answer to the question is rather simple. would you prefer sliding down over rocks face and belly down or feet and bud down. apart from that i think it would be advantageous to have your head above the snow if you are unconscious or heavily injured.