| A Snack-based Ration Containing Caffeine Increases Caloric Intake and Improves Cognitive Performance |
MAY 2011 |
30 pages |
| Authors:
Holly L. McClung; Matthew R. Ely; Harris R. Lieberman; Julie E. Smith; Susan M. McGraw; Phil J. Niro; Betty A. Davis; Andrew J. Young; Scott J. Montain; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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 | Warfighter cognitive performance degrades during sustained operations in part due to difficulty consuming adequate calories and limited access to stimulants such as caffeine. This investigation tested the effectiveness of a snack-based ration, containing caffeinated components, to increase energy and preserve cognitive performance during sustained operations. Eighty-nine Marines consumed either an entree-based (MRE) or a snack-based (FSR) ration during a four-day field exercise with limited sleep. Outcome measures included visual reaction ... |
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| Management of Circadian Desynchrony (Jetlag and Shiftlag) in CF Air Operations |
DEC 2010 |
54 pages |
| Authors:
Michel A. Paul; Gary W. Gray; Harris R. Lieberman; Ryan J. Love; James C. Miller; Josephine Arendt; DEFENCE RESEARCH AND DEVELOPMENT TORONTO (CANADA)
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| In response to operational difficulties resulting from the effects of fatigue (secondary to jetlag and shiftlag) on performance of Air Force personnel, the Air Force funded a 4-year project to optimize CF ability to manipulate circadian rhythms forwards or backwards to counter jetlag and shiftlag. This report presents the highlights of that work and offers recommendation for exploitation of this new capability to sustain operational readiness. The project consisted of ... |
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| Acute Effects of Battlefield-Like Stress on Cognitive and Endocrine Function of Officers from an Elite Army Unit |
01 APR 2006 |
15 pages |
| Authors:
Harris R. Lieberman; Christina M. Caruso; Philip J. Niro; Gaston P. Bathalon; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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| Military training prepares leaders for the stress of combat. However, there have been few studies of the response of well-trained officers to brief, but intense, operational stress. Recently, during a continuous 53-hour military field exercise designed to produce severe stress in participating officers, we examined changes in various behavioral and physiological parameters. Participants were Captains in the U.S. Army Rangers with an average of 9 years of military service. They ... |
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| A Low-Protein Diet Alters Rat Behavior and Neurotransmission in Normothermic and Hyperthermic Environments |
31 MAY 2005 |
7 pages |
| Authors:
Harris R. Lieberman; Sylva K. Yeghiayan; Timothy J. Maher; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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| Dietary protein contains amino acids used in the brain for synthesis of neurotransmitters. Although information on pre-and post-natal exposure to low-protein diets in rodents is available, little is known about the effects of such diets on adult humans. Therefore, the behavioral and neurochemical consequences of exposure to a brief (11 days), low-protein (4%) diet in animals exposed to normothermic and hyperthermic test conditions were examined. In separate groups of animals, ... |
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| Automated Ambulatory Assessment of Cognitive Performance, Environmental Conditions and Motor Activity during Military Operations |
01 APR 2005 |
11 pages |
| Authors:
Harris R. Lieberman; F. M. Kramer; Scott J. Montain; Philip J. Niro; Andrew J. Young; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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| Until recently, scientists had limited opportunities to study human cognitive performance in nonlaboratory, fully ambulatory situations. Recently, advances in technology have made it possible to extend behavioral assessment to the field environment. One of the first devices to measure human behavior in the field was the wrist-worn actigraph. This device, now widely employed, can acquire minute-by-minute information on an individual's level of motor activity. Actigraphs can, with reasonable accuracy, distinguish ... |
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| Nutrition Knowledge and Supplement Use among Elite U.S. Army Soldiers |
DEC 2003 |
5 pages |
| Authors:
Maria E. Bovill; William J. Tharion; Harris R. Lieberman; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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| A U.S. Army Special Forces (SF) unit was studied to determine the characteristics of those who were dietary supplement users, assess their nutrition knowledge, and identify the nutrition information sources they use. SF-qualified (n=119) and non-SF, support soldiers (n=38) participated in the study. Results show that most soldiers (87%) reported current supplement use with more SF (90%) than non-SF, support soldiers (76%) using supplements (p |
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| Nutrition, Brain Function and Cognitive Performance |
01 JUN 2003 |
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| Authors:
Harris R. Lieberman; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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 | Military interest in the effects of nutritional factors on cognitive function has stimulated considerable research on a variety of food constituents. This paper will review the research on the amino acids tryptophan and tyrosine, caffeine and carbohydrate. It will focus on research that addresses the potential utility of these compounds in military applications, particularly the acute, as opposed to chronic, effects of these substances on cogninve functions such as alertness, ... |
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| Food and Food Constituents, Acute Effects on Human Behavior |
DEC 2002 |
7 pages |
| Authors:
Harris R. Lieberman; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA MILITARY NUTRITION DIV
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| Scientific and popular interest in the effects of nutrients, food constituents, and nutritional supplements on the brain and behavior has been growing dramatically. The use of products sold as dietary supplements in the United States has become a multibillion-dollar industry. This growth can be attributed in part to a federal law passed in 1994, the Dietary Supplement Health and Education Act (DSHEA), deregulating the sale of nutritional supplements, as welt ... |
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| Sleep in the M-40 Mask: Sleep Quality, Mask Fit Factor and Next Day Performance |
13 MAY 1993 |
12 pages |
| Authors:
Harris R. Lieberman; Mary Z. Mays; Barbara Shukitt-Hale; Brent Marlowe; David Welch; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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| This study was designed to determine whether nighttime sleep is substantially disrupted when soldiers wear the M-40 chemical protective mask. Nine male volunteers participated. on four test nights they wore the mask while On four control nights they slept without it. During each test night the duration and fragmentation of sleep were assessed using a wrist-worn activity- monitor. Total sleep time significantly declined and number and length of awakenings increased ... |
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| Respiratory Stress, Visual Function and Moderation by Chemotherapy |
23 DEC 1977 |
33 pages |
| Authors:
Calvin K. Adams; William W. Dawson; Jose M. Perez; Harris R. Lieberman; Thom R. Tyler; FLORIDA UNIV GAINESVILLE J HILLIS MILLER HEALTH CENTER
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| Based upon the accepted sensitivity of visual function, particularly the peripheral visual fields, to moderate changes in circulating oxygen subsequent to work at altitude and/or respiratory distress, studies were undertaken to determine the sight in the visual system of changes and the influence of blood factors upon these changes. In an animal model, controlled hypoxia, blood gas measures, and measures of electrical signals at various stages of the visual pathway ... |
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