Apnea Research (english below)
DIVING PHYSIOLOGY STUDIES DURING NORDIC DEEP 2007

Delta/take part

Test 1

Till deltagare i "Nordic Deep"-fridykningstävling:
Ni som var med i förra årets tävling minns kanske att vi gjorde undersökningar angående risken för lungödem (ansamling av vätska i lungvävnaden) vid djupdykning. Vi vill i samband med årets tävling fortsätta studien på ett antal av deltagarna.

Försöksutförande:
Deltagande i försöket är givetvis helt frivilligt. Mätningarna utförs i
samband med fridykningstävlingen "Nordic Deep", 15-19 augusti. Mätningarna är helt ofarliga och är utformade så att de inte ska påverka deltagandet i tävlingen. All mätning sker icke-invasivt, d.v.s. helt
smärtfritt.

Innan djupdykningar kommer vi att mäta din lungvolym och ditt blods
syreinnehåll med en pulsoximeter (en apparat som lyser genom ditt finger).
Efter avklarat tävlingsdyk kommer vi att mäta lungvolym och blodets
syreinnehåll igen. Den första mätningen vill vi göra inom 10-15 minuter efter avklarat dyk. Vi kommer därefter att göra mätningar på kvällen och morgonen efter dykningen. Mätningarna tar ca 2-3 minuter
vardera.

Mer detaljerad information och en demonstration av instrumenten ges innan försöket.

Vill du vara med i dessa mätningar?
Vi tar gärna emot en "anmälan" om du är intresserad av att vara med om dessa mätningar. Enklast är att skicka ett mail till Johan Andersson (se adress nedan) alternativt att ringa honom på något av telefonnumren. Undrar du något så är du också välkommen att höra av
dig.

Tackar på förhand för ditt deltagande!

To participants in the Nordic Deep apnea-diving competition:
Those of you who participated in last year's competition may remember that we were investigating the risks for pulmonary edema (accumulation of fluid in the lung tissue) during deep diving. During this year's competition we want to continue the study in some of the competitors.

Procedures:
Participation in the study is of course voluntary. Measurements are performed during the competition Nordic Deep, August 15-19. Measurements are free of risks and will not interfere with your competition participation. All measurements are non-invasive, that is completely without causing any pain or discomfort.

Before deep diving, we will measure your lung volume and your blood's oxygen level with a pulse oximeter (an instrument shining red light through your finger). After your competition dive, the lung volume and blood oxygen level are measured again. The first measurement is done within 10-15 minutes after your dive. Thereafter, we will perform measurements the night and morning after the dive. The measurements will take 2-3 minutes each.

More detailed information and demonstrations of the instruments will be given prior to the measurements.

Do you want to participate in these measurements?
We would gladly receive a message if you were interested in participating in these measurements. The easiest thing is to send an e-mail to Johan Andersson. If you have any questions you are also more than
welcome to contact us.

Thank you for considering participating in this study!

Responsible for the project:
Johan Andersson
Department of Cell and Organism Biology
Lund University
johan.andersson@cob.lu.se
www.biol.lu.se/zoofysiol/Dyk/index.html

Test 2DIVING PHYSIOLOGY STUDIES DURING NORDIC DEEP 2007

The Environmental Physiology Group, from Mid Sweden University, did a
successful study of apnea physiology during the Hurgada World Championship
2006. A total of 31 divers participated, and we thank them all for their
valuable contribution to the science of apnea physiology. The general (not
individual) results and conclusions from these measurements will be
presented by research director Erika Schagatay on the Nordic Deep meeting.
Anyone participating can also obtain their individual results there, or
e-mail Erika to obtain them. (Erika.Schagatay@miun.se)

There will be further scientific studies undertaken just before and during
the Nordic Deep. The studies concern the diving response (Heart rate
reduction and redistribution of blood), spleen response, lung volumes, blood
status and other relevant data. The general aim is to determine what
composes a trained diver, compared to a non diver, and the effects of the
dive training itself. In a larger perspective this research explores the
limits of human existence in extreme environments.

In the long run these studies could also be the basis for developing
specific performance- predicting tests, to help athletes to optimize their
training. Such tests exist for most sports, but not for apnea. At present
tests designed for other sports are used for apneists, which may be
misleading.

Measurements:
Studies may include non-invasive measurements of Heart Rate, Oxygen
saturation, Respiratory volumes, Ultrasonic measurements of spleen volumes,
type and duration of apneas, and for some studies blood samples from a
venous catheter or by finger capillary sampling (voluntary, as the rest of
the measurements!) All measurements are performed by trained physiologists
and after informed consent. The subject can interrupt the tests at any time
without explaining why. Most tests are done as series of dry apneas with
short intervals. All data is treated confidentially and only used for
scientific purposes.

If you allready feel you would be a possible candidate for these tests,
please e-mail Erika.Schagaty@miun.se
However, it is also possible to volunteer during the pre-competition
training at Nordic Deep.