Abstract：
OBJECTIVE:Physical stress (exercise and/or environmental) activates the sympathetic-adrenal-medullary (SAM) and hypothalamic-pituitary-adrenocortical (HPA) axes. The combination of ultraendurance exercise in the cold presents a unique summated stress to the body. The purpose of this study was to assess the stress hormone response in runners, cyclists, and skiers participating in a 161-km ultraendurance race on a snow-packed course in the Alaskan wilderness. METHODS:Forty-four athletes (20 runners, 17 cyclists, 7 skiers) competed on the same course of snow-machine trails and ice roads with each athlete carrying 7 kg of mandatory equipment. Pre-race weight and blood samples were collected 2 days prior to the race start. Post-race measurements were made within 15 minutes of race finish. Hematocrit was measured, and blood samples were analyzed for levels of norepinephrine, epinephrine, adrenocorticotropic hormone, and cortisol. RESULTS:Runners lost significant weight (-1.74 kg +/- 1.29) pre-race to post-race. Hematocrit was maintained, and plasma volume increased minimally. Norepinephrine increased significantly pre-race (279.9 pg/mL +/- 356.9) to post-race (691.7 pg/mL +/- 422.6) with no difference among divisions. Epinephrine did not change significantly during the race. Adrenocorticotropic hormone (2.40 pg/mL +/- 2.40 to 19.04 pg/mL +/- 45.38) increased significantly with no difference among divisions. Cortisol increased significantly pre-race (12.03 microg/dL +/- 5.66) to post-race (26.69 microg/dL +/- 5.77), and post-race cortisol was significantly higher in runners vs skiers. CONCLUSIONS:These data suggest activation of both the SAM and HPA axes from an ultraendurance race in the cold and reveal the degree of stress hormone responses to this exhausting bout of exercise.
journal_name
Wilderness Environ Medjournal_title
Wilderness & environmental medicineauthors
Stuempfle KJ,Nindl BC,Kamimori GHdoi
10.1016/j.wem.2009.12.020subject
Has Abstractpub_date
2010-03-01 00:00:00pages
22-7issue
1eissn
1080-6032issn
1545-1534pii
S1080-6032(09)00021-0journal_volume
21pub_type
杂志文章abstract：:There are many tales describing ferocious schools of piranha attacking humans, but there are few scientific data supporting such behavior. The very few documented instances of humans attacked and eaten by piranha schools include 3 that occurred after death by other causes (eg, heart failure and drowning). These predac...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2003)14[249:paohis]2.0.co;2
更新日期：2003-01-01 00:00:00
abstract：:Remote extended expeditions often support scientific research and commercial resource exploration or extraction in hostile environments. Medical support for these expeditions is inherently complex and requires in-depth planning. To be successful, this planning must include substantial input from clinicians with experi...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.05.005
更新日期：2013-12-01 00:00:00
abstract：:We describe a patient with missed traumatic pneumothorax due to penetrating neck injury that was presumably caused by a stingray while diving. The barb can result in significant injuries to deep structures and organs despite a deceptively small entrance wound. This case underscores the importance of performing a thoro...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2017.02.006
更新日期：2017-06-01 00:00:00
abstract：OBJECTIVE:To describe the epidemiology of injuries sustained during the 2009 season at Whistler Mountain Bike Park. METHODS:A retrospective chart review was performed of injured bike park cyclists presenting to the Whistler Health Clinic between May 16 and October 12, 2009. RESULTS:Of 898 cases, 86% were male (median...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2012.02.002
更新日期：2012-06-01 00:00:00
abstract：OBJECTIVE:Heat-related illness is a common disease with significant morbidity and mortality. Despite no proven efficacy, application of chemical cold packs (CCP) to the skin overlying the large vessels of the neck, groin, and axillae is a traditional recommended cooling modality. The study objective was to compare the ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,随机对照试验
doi：10.1016/j.wem.2014.11.006
更新日期：2015-06-01 00:00:00
abstract：OBJECTIVE:Winter sports continue to be a popular form of recreation, but few studies have focused on serious injuries. The objectives of this study were to evaluate the major morbidity associated with downhill skiing, snowboarding, and sledding and to determine the incidence of serious injuries sustained while downhill...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2002)013[0245:ssasii]2.0.co;2
更新日期：2002-01-01 00:00:00
abstract：:A tool that can differentiate ischemic stroke from other neurological conditions (eg, hemorrhagic stroke, high-altitude cerebral edema) in the field could enable more rapid thrombolysis when appropriate. The resources (eg, an MRI or CT scanner) to investigate stroke at high altitude may be limited, and hence a portabl...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2010.10.007
更新日期：2011-03-01 00:00:00
abstract：INTRODUCTION:Cricothyroidotomy is an advanced and life-saving technique, but it is also a rare and a difficult procedure. The purpose of the present study was to produce a low-cost simulation model with realistic anatomic features to investigate its effectiveness in developing cricothyroidotomy skills. METHODS:This st...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2020.05.003
更新日期：2020-09-01 00:00:00
abstract：OBJECTIVE:To compare altitude responses of 2 ultraendurance athletes and 2 nonathletes during a 2-week expedition on Denali (Mount McKinley). METHODS:The severity of acute mountain sickness (AMS) symptoms (Lake Louise AMS guidelines) and pulmonary function parameters (forced vital capacity, forced expiratory volume in...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2005)16[198:prouaa]2.0.co;2
更新日期：2005-01-01 00:00:00
abstract：:A 67-year-old woman presented to a community emergency department in Orange County, CA, after she was stung by a scorpion identified as Centruroides limbatus from Central America. She developed local pain and systemic symptoms, including parasthesias, flushing, hypertension, and wheezing. Envenomation by this genus of...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(1999)010[0161:ebtslo]2.3.co;2
更新日期：1999-10-01 00:00:00
abstract：:Stingrays are found in open waters and are also kept in exhibits in many aquariums throughout the world. They are generally nonaggressive creatures by nature, but they can inflict injuries with their spines if provoked. We present a case of a 62-y-old diver who was pierced in the chest by the barb of a stingray while ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2019.09.004
更新日期：2020-03-01 00:00:00
abstract：OBJECTIVES:In low-income countries, snakebites are frequently managed in rural areas in health centers with severely constrained resources. Many healthcare providers in these settings have limited access to the numerous and relatively expensive laboratory studies used to diagnose envenomation. The relatively simple and...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.08.001
更新日期：2013-12-01 00:00:00
abstract：:Stingray envenomation is a common occurrence. X-ray evaluation of stingray wounds is an unnecessarily misunderstood diagnostic concept. We present the case of a patient stung by a stingray with a prolonged and complicated course and permanent disability due to a retained barb. The patient had undergone multiple medica...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2015.03.006
更新日期：2015-09-01 00:00:00
abstract：OBJECTIVE:We aimed to ascertain risk factors for acute mountain sickness (AMS) in miners exposed to chronic intermittent high altitude conditions. METHODS:All new hires (2009-2012) for mine employment (4000 m above sea level) were followed up for 12 months after first ascent. Demographics, physiologic data, and cigare...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.10.006
更新日期：2015-06-01 00:00:00
abstract：INTRODUCTION:Wilderness medicine involves the treatment of individuals in remote, austere environments. Given the high potential for injuries as well as the unique treatment modalities required in wilderness medicine, evidence-based clinical practice guidelines are necessary to provide optimal care. In this study, we i...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2018.02.008
更新日期：2018-09-01 00:00:00
abstract：BACKGROUND:Skiing and snowboarding are popular activities that involve high kinetic energies, often at altitude, and injuries are common. As a portable imaging modality, ultrasound may be a useful adjunct for mountainside clinics. This review briefly discusses skier and snowboarder injury profiles and focuses on the ro...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章,评审
doi：10.1016/j.wem.2012.03.012
更新日期：2012-09-01 00:00:00
abstract：OBJECTIVE:To describe injuries and illnesses treated during an expedition-length adventure race and combine the results with those from previous studies to identify common patterns of injury and illness during these events. METHODS:The 2003 Subaru Primal Quest Expedition Length Adventure Race was held in Lake Tahoe, C...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/pr29-05
更新日期：2006-10-01 00:00:00
abstract：OBJECTIVE:The purposes of this experiment were to determine the repeatability of acute mountain sickness (AMS), AMS symptoms, and physiological responses across 2 identical hypoxic exposures. METHODS:Subjects (n = 25) spent 3 nights at simulated altitude in a normobaric hypoxia chamber: twice at a partial pressure of ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2013.11.007
更新日期：2014-06-01 00:00:00
abstract：OBJECTIVE:Our objective was to determine the incidence of acute mountain sickness (AMS) and the cardiorespiratory responses, in children and their parents, after rapid ascent to 3500 m. The sample population was composed of children and their parents who ascended within 24 hours from Arica (sea level) to Putre (3500 m)...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/06-WEME-BR-084.1
更新日期：2008-01-01 00:00:00
abstract：:Although catfish are found worldwide and commonly consumed in the southern United States, fatal infections from catfish are rare. Edwardsiella tarda is a bacterium known to cause gastrointestinal distress most commonly, but extraintestinal infections are a rarely considered danger for those acquiring, preparing, and c...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2019.04.004
更新日期：2019-09-01 00:00:00
abstract：:We present 3 cases of severe hyponatremia occurring on a commercially guided river rafting trip on the Colorado River in Grand Canyon National Park. All 3 women appeared to have been overhydrating because of concern about dehydration and required evacuation within 24 hours of each other after the staggered onset of sy...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.08.007
更新日期：2015-06-01 00:00:00
abstract：OBJECTIVE:To investigate the demographics, incidence, and symptoms and signs of hydrocarbon poisoning in admitted children from the Negev Desert area of Israel. METHODS:The medical records of all children admitted for hydrocarbon poisoning from 1995 to 1999 were reviewed retrospectively. RESULTS:Of the 274 admitted c...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2003)014[0078:hpicay]2.0.co;2
更新日期：2003-07-01 00:00:00
abstract：:As part of an emergency medical system protocol, national park service rangers certified at the level of an emergency medical technician-basic (EMT-B) are taught to recognize and treat high-altitude pulmonary edema and high-altitude cerebral edema. In Sequoia and Kings Canyon National Parks, this is done with the assi...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/1080-6032(2004)15[198:uotgbb]2.0.co;2
更新日期：2004-10-01 00:00:00
abstract：OBJECTIVE:To document changes in body composition and body mass in male and female tree planters. METHODS:Height, mass, skin-fold thickness, and limb girths were measured in 17 male and 5 female tree planters before and after 10 weeks of work. RESULTS:Significant decreases were found in body mass (80.6 +/- 10.7 kg vs...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/pr01-03.1
更新日期：2005-04-01 00:00:00
abstract：OBJECTIVE:The presence of coliform bacteria indicates a watershed risk for harboring microbes capable of causing human disease. We hypothesized that water from watersheds that have different human- or animal-use patterns would have differing risks for the presence of coliform bacteria. METHODS; Water was collected in w...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1580/pr05-05.1
更新日期：2006-04-01 00:00:00
abstract：OBJECTIVE:This study was designed to evaluate the effectiveness of a new protocol implemented to standardize snakebite management in Iran. METHODS:In this study, 27 patients treated according to the new protocol in 2012 (P+) were compared with 22 patients treated according to the previous modality in the year before i...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.09.011
更新日期：2015-06-01 00:00:00
abstract：OBJECTIVE:To measure afterdrop and rewarming in subjects placed in a hypothermia wrap immediately after extrication from 60 minutes of snow burial. METHODS:We measured esophageal core body temperature (Tes) in 6 subjects buried in compacted snow (mean density 39%) for up to 60 minutes at an altitude of 2450 m while br...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2010.06.007
更新日期：2010-09-01 00:00:00
abstract：OBJECTIVE:To examine circulating hormonal responses in men competing in the Western States Endurance Run (WSER, June 23 to 24, 2012): a 161-km trail run that starts in Squaw Valley, CA, and concludes in Auburn, CA. METHODS:We examined 12 men who completed the WSER. Blood samples were obtained the morning before the ra...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2014.03.013
更新日期：2014-09-01 00:00:00
abstract：:The case of a 42-y-old rock climber who sustained a complete, isolated rupture of the short head of the biceps brachii muscle after falling onto his upper arm while bouldering is presented. This is the first description of this rare injury after a climbing accident. Moreover, there is no definitive consensus on whethe...
journal_title：Wilderness & environmental medicine
pub_type：
doi：10.1016/j.wem.2020.04.006
更新日期：2020-09-01 00:00:00
abstract：INTRODUCTION:North Carolina (NC) is home to more than 30 species of indigenous venomous and nonvenomous snakes. Snakebites can cause debilitating and potentially fatal injuries. However, there is a lack of current information available describing the incidence of snakebites in NC. Therefore, we performed this study of ...
journal_title：Wilderness & environmental medicine
pub_type： 杂志文章
doi：10.1016/j.wem.2018.01.004
更新日期：2018-06-01 00:00:00
