Navigation Links
2 days of staging as effective as 4 for high-altitude climbs
Date:4/21/2013

published in a scientific journal.

At the Peak

Study leader Beidleman explains that the U.S. Army Research Institute of Environmental Medicine's stated mission is to improve health and performance of the Warfighter when exposed to extreme environments. That includes heat and cold, as well as extreme altitude, Beidleman's own area of expertise.

Years ago, researchers showed that staging for four days cut the prevalence of AMS by about half. However, Beidleman says, researchers had never studied whether this time could be trimmed down even further.

To investigate, she and her colleagues studied male soldiers ascending Pike's Peak in Colorado, the summit of which stands at 4,302 meters above sea level. They assigned 12 of these soldiers to stage for two days at 2500 meters. Another seven soldiers staged for two days at 3000 meters. Seven more ascended directly to the peak.

Trimming AMS by Half

Their findings showed that about 73 percent of soldiers who took a direct route to the peak showed symptoms of AMS. However, only 30 to 40 percent of those who staged for two days ended up with this condition, regardless of their staging height.

"These results suggest that you don't have to stay at a moderate altitude for four days. You can stay there for two days and reap the same benefits," Beidleman says.

She explains that two days is enough time for the body to begin affecting the biological changes necessary to live comfortably at a higher altitude. Within hours to days, she says, climbers begin to breathe faster and reduce blood plasma volume which helps the body bring more oxygen to cells, she says. These immediate changes help cells survive until the body implements more long-term changes, such as increasing the number of red blood cells and other metabolic changes.

"The military is always looking for faster, more effective solutions to problems," she says. "Now we know that ou
'/>"/>

Contact: Donna Krupa
dkrupa@the-aps.org
American Physiological Society
Source:Eurekalert

Page: 1 2 3

Related biology news :

1. A trial to find out the effectiveness of biocides against Vespa velutina
2. UCLA researchers find nanodiamonds could improve effectiveness of breast cancer treatment
3. Squashed loft insulation 50 percent less effective
4. Highly effective communities of bacteria in the worlds deepest oceanic trench
5. Symbols, such as traffic lights, on menus effective in educating diners
6. The effective collective: Grouping could ensure animals find their way in a changing environment
7. UNC study may lead to treatments that are effective against all MRSA strains
8. Lady beetle diet influences its effectiveness as biocontrol agent
9. New whole plant therapy shows promise as an effective and economical treatment for malaria
10. Study reports iron oxide nanoparticles effective for labeling human endothelial cells
11. New technique could make cell-based immune therapies for cancer safer and more effective
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:9/16/2014)... The risk of severe maternal morbidity amongst women ... suggests a new study published today (17 September) ... and Gynaecology . , Australians generally enjoy high ... that health disparities exist, in particular between indigenous ... aimed to explore the independent impact of socioeconomic ...
(Date:9/16/2014)... 36 Pit Fire began on September 13, 2014. The ... It is currently over 2,300 acres in size and is ... 36 Pit Fire was calm Monday night due to higher ... an anchor point and beginning to construct a fireline on ... following resources are working on the fire: , 7 20-person ...
(Date:9/16/2014)... impact that spelled doom for the dinosaurs 66 million ... to a much greater extent than their deciduous peers, ... results are published in the journal PLOS Biology ... trove of thousands of fossilized leaves of angiosperms ... able to reconstruct the ecology of a diverse plant ...
Breaking Biology News(10 mins):New study examines the impact of socioeconomic position & maternal morbidity in Australia 2New study examines the impact of socioeconomic position & maternal morbidity in Australia 3Meteorite that doomed dinosaurs remade forests 2Meteorite that doomed dinosaurs remade forests 3Meteorite that doomed dinosaurs remade forests 4
... peas in a pod may not be so friendly when planted ... once separated may treat the former conjoined twin as an alien ... at how plants determine who is a competitor when competing with ... in plant ecology. "There is no reason for roots to fight ...
... wake of Katrina, the public health threats from infectious ... from milder, more common infections rather than exotic diseases. ... hygiene measures and a little common sense. , "Deadly ... break out after hurricanes and floods in areas where ...
... that once characterized expansive tracts of tropical rainforest gets ... how big a role these winged gardeners play is ... Chicago and several Latin American universities are about to ... in Mexico's gulf coast state of Veracruz. , Henry ...
Cached Biology News:Prozac for future Plants on Mars 2Hurricane aftermath: Infectious disease threats from common, not exotic, diseases 2Birds and bats sow tropical seeds 2Birds and bats sow tropical seeds 3
(Date:9/17/2014)... NASA’s MESSENGER has just celebrated its 10 year ... have one of its latch valves, V27200-818, operating onboard ... investigation of the planet Mercury. It is only the ... provided a vast amount of information and images of ... utilize solenoids that also include permanent magnets to maintain ...
(Date:9/16/2014)... “Nature has developed, very cleverly, some lessons ... in optical design,” said Joseph Shaw, director of the ... explore surfaces and structures at the nanoscale, we’ll discover ... San Diego in August during a conference called “ ... by Shaw and Rongguang Liang of the University of ...
(Date:9/16/2014)...  Biocom, the association representing the Southern ... th Annual National Health Information Technology Week, which ... improving our health care system. " ... world,s most vibrant hubs for health IT and digital ... genomic testing to remote patient monitoring," said Joe ...
(Date:9/16/2014)... Rice University scientists who created a deicing film for ... as a transparent coating for glass. , The ... colleagues could keep glass surfaces from windshields to skyscrapers ... to radio frequencies (RF). , The technology was ... Applied Materials and Interfaces . , The ...
Breaking Biology Technology:Nature’s designs inspire research into new light-based technologies 2Nature’s designs inspire research into new light-based technologies 3Nature’s designs inspire research into new light-based technologies 4Nature’s designs inspire research into new light-based technologies 5Biocom Recognizes National Health IT Week 2Nanoribbon film keeps glass ice-free 2
... Inc.,(Nasdaq: HOLX ) today announced the successful completion ... Tech Corp., for all,outstanding shares of Third Wave Technologies, ... per share in cash., The subsequent offering period ... July 23, 2008. The initial tender offer period expired,at ...
... 24 Cara Therapeutics, Inc.,announced today that ... additional funding,to its original $24 million Series ... round was led by new investor, Devon ... Previous investors participating,in the round included; Ascent ...
... Md., July 24 United,Therapeutics Corporation (Nasdaq: ... 2008 second quarter financial results before the open ... Therapeutics will host a half-hour teleconference on Thursday,July ... teleconference is accessible,by dialing 1-800-603-1777, with international callers ...
Cached Biology Technology:Hologic Completes Cash Tender Offer for Third Wave Technologies, Inc. 2Hologic Completes Cash Tender Offer for Third Wave Technologies, Inc. 3Hologic Completes Cash Tender Offer for Third Wave Technologies, Inc. 4Cara Therapeutics Secures $12.3 Million in Series C Extension Financing 2
... Sets Sets of pET host strains ... The most common method for transformation of ... to use chemically competent cells. Although competent ... greater efficiency, reproducibility and convenience are achieved ...
... uses a simplified procedure and streamlines the ... kit is based on the three step ... sodium bisulfite where cytosine is converted into ... in-column desulphonation reaction eliminates several precipitation steps ...
... x-ray detectors from KUBTEC represents a stand-alone, ... to 16 bit digital interface. The large ... sensor with pixel spacing down to 48 ... x-ray energies (10-50 kV) and an extended ...
... kit was tested on rat tissue extracts (liver, ... ( S. cerevisae ) extract. It was also ... and cell lines. Application: A simple and reliable ... based on the detection of the inorganic phosphate ...
Biology Products: