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Query: UMLS:C0015672 (fatigue)
 51,768 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

The relationship between aerobic fitness and recovery from high-intensity exercise was examined in 197 infantry soldiers. Aerobic fitness was determined by a maximal-effort, 2,000-m run (RUN). High-intensity exercise consisted of three bouts of a continuous 140-m sprint with several changes of direction. A 2-minute passive rest separated each sprint. A fatigue index was developed by dividing the mean time of the three sprints by the fastest time. Times for the RUN were converted into standardized T scores and separated into five groups (group 1 had the slowest run time and group 5 had the fastest run time). Significant differences in the fatigue index were seen between group 1 (4.9 +/- 2.4%) and groups 3 (2.6 +/- 1.7%), 4 (2.3 +/- 1.6%), and 5 (2.3 +/- 1.3%). It appears that recovery from high-intensity exercise is improved at higher levels of aerobic fitness (faster time for the RUN). However, as the level of aerobic fitness improves above the population mean, no further benefit in the recovery rate from high-intensity exercise is apparent.
Mil Med 1997 Jul
PMID:The relationship between aerobic fitness and recovery from high-intensity exercise in infantry soldiers. 923 79

Cold weather injury (CWI) reports covering 272 U.S. Army soldiers from September 1990 to May 1995 were reviewed. First- and second-degree frostbite accounted for 99.3% of all injuries. Although some soldiers had extensive lost duty time from their injuries, no one suffered tissue loss during the 5-year period. Fifty-one percent of injuries occurred during field training. Thirty-six percent occurred while engaging in garrison activities, including physical training, which accounted for 15% of all CWIs. Twelve percent of all injuries occurred during off-duty time. Seventy-one percent of CWIs occurred when the wind-chill factor was at or below -20 degrees F (-29 degrees C). Male African-American soldiers appear to be significantly more susceptible to frostbite than male Caucasian soldiers, especially with regard to frostbite of the distal extremities (relative risk = 3.94; 95% confidence interval = 2.77-5.59). Other identified risk factors include inadequate clothing, wet clothing, dehydration, inactivity, fatigue, and previous CWIs.
Mil Med 1997 Dec
PMID:Cold weather injuries among U.S. soldiers in Alaska: a five-year review. 943 82

The goal of our study was to determine the epidemiological and clinical features of imported malaria seen at our military hospital in Hawaii. We reviewed the records of malaria cases seen from January 1, 1979, to December 31, 1995, and compared our results with published reviews from civilian hospitals in North America. Seventy-nine patients were diagnosed with malaria by blood smears. All acquired malaria abroad, mostly in southeast Asia. Sixty-seven percent of cases were vivax malaria, 22% were falciparum malaria, and 11% were caused by undetermined species. Common symptoms were fever (100%), alternate day fever (41%), rigors (91%), headache (59%), nausea (41%), fatigue (39%), dark urine (32%), and vomiting (31%). Ninety-one percent had fever during hospitalization, but 39% were afebrile on admission. Splenomegaly was detected in 49% of cases. The white blood cell count was normal in 65%, low in 31%, and elevated in 4% of cases. Other laboratory findings were anemia (58%), thrombocytopenia (74%), and mild hyperbilirubinemia (64%). Military physicians initially considered the diagnosis of malaria in only 54% of patients. The epidemiological features of our patients differ from those described in the civilian hospitals. Most of our patients were nonimmune, U.S.-born, military personnel infected in southeast Asia, whereas patients described in reviews from U.S. civilian hospitals were usually foreign-born civilians who were infected in Africa or India. The clinical features of malaria, and the problems of initial misdiagnosis in our patients, were similar to those reported from civilian hospitals. Military physicians, like their civilian colleagues, need more training and experience in malaria.
Mil Med 1998 Feb
PMID:A review of 79 patients with malaria seen at a military hospital in Hawaii from 1979 to 1995. 950 98

"Persian Gulf syndrome" refers to a group of clinical findings found in military personnel who served in the Persian Gulf War. The most commonly reported symptoms include chronic fatigue, headache, and neurologic disorders. Recently, new information has linked Whipple's disease and Ki-1 anaplastic large cell lymphoma to this syndrome. Presented here is an unusual case of multiple giant cell tumors of the hand in a patient with documented Persian Gulf syndrome. The epidemiologic significance between these two entities is unclear, because this is a single reported case. However, the practical message is clear. Physicians must meticulously evaluate patients who are veterans of the Persian Gulf conflict to further our understanding and confirm the existence of this syndrome.
Mil Med 1998 Mar
PMID:Multiple giant cell tumors in a patient with Gulf War syndrome. 954 62

A 60-year-old woman with chronic progressive fatigue, diurnal somnolence, proximal muscle weakness, and dyspnea developed acute respiratory failure when given supplemental oxygen. Hypoventilation secondary to neuromuscular dysfunction was suspected by the critical care specialist. Neurologic consultation and supportive laboratory evaluations led to the diagnosis of acid maltase deficiency, which was confirmed by muscle biopsy. The discussion includes a literature review that describes the pathophysiology and treatment of this rare muscle enzyme deficiency disorder. Acid maltase deficiency should be suspected in any adult presenting with hypoxemia, fatigue, and acute respiratory failure.
Mil Med 1998 Oct
PMID:A 60-year-old woman with weakness, fatigue, and acute respiratory failure: case report and discussion of the differential diagnosis. 979 52

A one-page questionnaire was administered to 157 aviation personnel from three Army posts to determine when Army aviation personnel work and sleep while on reverse cycle. This project was undertaken as a first step to developing tailor-made fatigue reduction strategies for shift workers in Army aviation. The results indicated that 97.6% of the surveyed aviation personnel had experience working night shift/reverse cycle at some point in their careers, with 69.4% working the night shift within the past 6 months. Of those who had experience working the night shift, 36.2% reported usually working from early in the afternoon to early in the morning, with 52.2% of personnel returning home by 4:00 a.m.; however, 28.3% arrived home after 8:00 a.m. Almost 62% of the respondents indicated that they did not feel they received adequate daytime sleep some of the time or at all while on reverse cycle/night shift. Research is needed to address the issue of helping aviation personnel sleep during the daylight hours, both for training exercises and for deployment. Once the work/rest schedule for a unit is known, countermeasures such as light therapy or gradual changes in scheduling can be tailored to meet the specific needs of the individual or unit.
Mil Med 2001 Feb
PMID:Work and sleep hours of U.S. Army aviation personnel working reverse cycle. 1127 15

This study examined the effects of one night of sleep deprivation on melatonin and cortisol profiles, as well as performance efficiency of military service members. Sleep intervention consisted of total lack of sleep (N = 7) or 8 hours of sleep (control group; N = 7) during the night. All parameters were measured at selected time intervals before (day 1), during (only in sleep-deprived individuals), and after (day 2) sleep intervention. Rotary pursuit scores and handgrip strength data were used as indices of psychomotor and physical performance, respectively. In sleep-deprived individuals, more salivary melatonin, but not cortisol, was secreted than in subjects who slept adequately. Significant increases in melatonin and cortisol were noted, especially at 1:30 p.m. on the day after nighttime sleep deprivation. In contrast, the tracking scores for rotary pursuit and grip strength among sleep-deprived and rested individuals were comparable. Across a normal working day (day 1), all parameters studied revealed time-specific fluctuations in both control and sleep-deprived groups. Irrespective of nighttime sleep schedule, the patterns of performance on day 2 differed from those on day 1. The tracking performance improved on day 2, whereas grip strength worsened, which may reflect inherent learning and muscle fatigue, respectively. During the night of sleep deprivation, performance declined. In conclusion, the present study showed that one night of sleep deprivation (8 hours) resulted in significant hormonal changes on the next afternoon but did not modify tracking and muscular strength performance.
Mil Med 2001 May
PMID:Effects of one night of sleep deprivation on hormone profiles and performance efficiency. 1137 Feb 8

The general public, the mass media, and many government officials believe that the use of weapons of mass destruction (WMD) will inevitably lead to mass panic and/or mass hysteria. However, studies of disasters and wars show that disorganized flight in the presence of a real or perceived danger (i.e., mass panic) is rare. On the other hand, in a real or perceived WMD scenario, outbreaks of multiple unexplained symptoms (i.e., mass psychogenic illness, mass sociogenic illness, mass hysteria, or epidemic hysteria) may be prevalent. Many of the symptoms (fatigue, nausea, vomiting, headache, dizziness/lightheadedness, and anorexia) are common in combat and after toxic chemical exposure, chemical weapon exposure, prodromal infectious illness, and acute radiation sickness.
Mil Med 2001 Dec
PMID:Collective behaviors: mass panic and outbreaks of multiple unexplained symptoms. 1177 31

The primary health effect of Chernobyl has been widespread psychological distress in liquidators (workers brought in for cleanup), evacuees, residents of contaminated areas, and residents of adjacent noncontaminated areas. Several psychoneurological syndromes characterized by multiple unexplained physical symptoms including fatigue, sleep and mood disturbances, impaired memory and concentration, and muscle and/or joint pain have been reported in the Russian literature. These syndromes, which resemble chronic fatigue syndrome and fibromyalgia, are probably not due to direct effects of radiation because they do not appear to be dose related to radiation exposure and because they occur in areas of both high and low contamination.
Mil Med 2002 Feb
PMID:Radiophobia: long-term psychological consequences of Chernobyl. 1187 98

This study examined the health status of 46,633 Persian Gulf War theater veterans who received full clinical evaluations in the Department of Defense's Gulf War Comprehensive Clinical Evaluation Program (CCEP) as of spring 2000. Clinical data analyzed included demographic information, 15 health symptoms, 19 wartime exposures, and primary and secondary physician-determined medical diagnoses based on International Classification of Diseases, 9th Revision, Clinical Modification, criteria. Findings and discussions are arrayed, by gender, with comparative 1996 data from the Department of Veterans Affairs Health Examination Registry Program. Many veterans reported fewer physical symptoms now than during the time of the Gulf War. Many endorsed symptoms of joint pain, fatigue, weight change, and sleep disturbances. Most reported exposure to diesel fuel and the nerve agent antidote pyridostigmine bromide; far fewer female veterans reported combat involvement. The most frequent primary or secondary diagnosed medical conditions were musculoskeletal/connective tissue diseases, ill-defined conditions, and mental disorders. Female veterans were diagnosed more frequently with mental disorders. Symptom endorsement and diagnosis rates between the CCEP and the Department of Veterans Affairs registry were not dissimilar. Overall, the self-reported general health of veterans with symptoms was much poorer (females had higher rates of "fair to poor" health than males) than that of veterans with no reported symptoms.
Mil Med 2002 Feb
PMID:The Department of Defense's Persian Gulf War registry year 2000: an examination of veterans' health status. 1187 33


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