| Th Effects of Creatine Supplementation on Short-term Exercise Performance of U.S. Navy Seals |
DEC 1999 |
19 pages |
| Authors:
W. Y. Ensign Jr.; I. Jacobs; W. K. Prusaczyk; H. W. Goforth Jr.; P. G. Law; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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 | Dietary creatine (Cr) supplementation is currently a common practice among athletes and U.S. Naval Special Warfare personnel. The ergogenic effect of supplemental Or has been demonstrated under certain well-controlled laboratory conditions, but the evidence supporting Cr use to augment performance under operational or field conditions is equivocal. This investigation was designed to evaluate the effects of dietary Cr supplementation on the performance of military tasks by U.S. Navy Sea Air ... |
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| Effect of Induced Erythrocythemia on Aerobic Capacity, Ventilatory Threshold, and Run Performance |
18 MAY 1999 |
31 pages |
| Authors:
H. W. Goforth Jr.; J. A. Hodgdon; A. A. Sucec; N. L. Campbell; W. T. Rasmussen; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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| Document the effects of induced erythrocythemia upon aerobic capacity (VO2max) ventilatory threshold (VT), and aerobic performance (3-mile track run, 3MT). Six trained male distance runners (age = 34.8 +/- 5 yr, hematocrit Hct = 39.6 +/- 1.8%, VO2max= 4.10 +/- 0.56 L O2 min-1), received two infusion treatments in a double-blind, counterbalanced study. (BT) 760 mL autologous resuspended red blood cells (Hct =43.5%) and (ST) 250 ... |
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| Survey Of Physically Demanding Tasks Of U.S. Navy Explosive Ordnance Disposal (EOD) Personnel |
DEC 1998 |
33 pages |
| Authors:
W. K. Prusaczyk; J. W. Stuster; H. W. Goforth Jr.; M. B. Beckett; J. A. Hodgdon; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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| The primary objective of this study was to identify physically demanding tasks performed during EOD operations and rank them according to difficulty to perform, frequency of performance, and importance to mission success. Subject matter experts from EOD units were interviewed regarding tasks they perform or had performed as EOD technicians. Following an iterative review and revise process, an inventory was developed and judged comprehensive and ... |
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| The Effect of Dietary Saturated Fat on the Production of Chylomicra Enriched in Satuirated Fat |
APR 97 |
16 pages |
| Authors:
D. L. Puppione; H. W. Goforth Jr.; S. E. Kaupp; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| Digested fat is absorbed in the small intestine, where cells produce lipoprotein particles (chylomicra) that contain 300,000 to 500,000 triglyceride molecules. The composition of fatty acids consumed is reflected in the composition of fatty acids in the chylomicra. In some mammals (e.g., rats, monkeys, and cattle), dietary saturated fats lead to the production of plasma chylomicra enriched in saturated triglycerides (TG). When these chylomicra are cooled to 45 deg C). ... |
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| Efficacy of Downhill Running to Prepare for Mountain Hiking with Pack Weight |
MAR 97 |
23 pages |
| Authors:
P. G. Law; H. W. Goforth Jr.; S. E. Kaupp; W. K. Prusaczyk; K. E. Schneider; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| Unaccustomed eccentric exercise can result in severe muscle soreness (MS), strength loss, and muscle damage. However, personnel may be able to prepare the muscles in advance by performing a similar but less time consuming eccentric activity. This study determined if downhill running could reduce adverse symptoms that may be associated with a subsequent novel mountain hiking exercise. Special operation volunteers were assigned to either a treatment group (DHR) or a ... |
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| Physical Demands of U.S. Navy Sea-Air-Land (SEAL) Operations |
OCT 95 |
78 pages |
| Authors:
W. K. Prusaczyk; J. W. Stuster; H. W. Goforth Jr.; T. S. Smith; L. T. Meyer; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| This study identified the physical demands of U.S. Navy Sea-Air-Land (SEAL) operations. SEALs were interviewed regarding missions conducted and an inventory of missions and mission segments performed was developed. Questionnaires were developed from the inventories once they were judged comprehensive and accurate. SEALs rated each task on difficulty, frequency performed, and importance to mission success. For each task, scores were summed to obtain a 'composite' score. The composite score mitigated ... |
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| Physical Training Activities of East Coast U.S. Navy SEALs |
DEC 94 |
32 pages |
| Authors:
W. K. Prusaczyk; H. W. Goforth Jr.; M. S. Nelson; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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| This survey documents the aerobic and strength conditioning programs of East Coast Navy SEALs and evaluates the effectiveness of training programs. 75 East and 102 West Coast SEALs completed a detailed physical training activity questionnaire. Questions documented the type, duration, frequency, and intensity of exercise and the locations/facilities where the SEALs trained. The activities were evaluated according to American College of Sports Medicine guidelines for developing and maintaining aerobic and ... |
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| Personality Profiles of U.S. Navy Sea-Air-Land (SEAL) Personnel |
MAY 94 |
17 pages |
| Authors:
D. E. Braun; W. K. Prusaczyk; H. W. Goforth Jr.; N. C. Pratt; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| One hundred thirty-nine U.S. Navy Sea-Air-Land (SEAL) personnel completed the NEO Personality Inventory (NEO-PI) . The average profiles were compared to adult male norms for five broadly defined domains. SEALs scored lower in Neuroticism and Agreeableness, average in Openness, and higher in Extraversion and Conscientiousness compared to these two populations. High Extraversion and conscientiousness scores have been shown to predict job performance in other professions. SEALs seek excitement and dangerous ... |
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| Downhill Running to Enhance Operational Performance in Mountain Terrains |
JAN 94 |
29 pages |
| Authors:
P. G. Law; H. W. Goforth Jr.; W. K. Prusaczky; T. S. Smith; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| Military special forces personnel perform missions in a variety of environments, including downhill exercise in the mountains. The purpose of this study was to determine whether a downhill running program (involving eccentric muscle contractions) would reduce damage to musculoskeletal tissue and prevent possible strength loss in preparation for future terrestrial missions. Eight U.S. Navy and Marine Corps males (29 f 1 yr, 81 f 2 kg, 179 i 2 cm1 ... |
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| Thermal and Physiological Responses of Basic Underwater Demolition/Seal (BUD/S) Students to a 5.5-Mile Open-Ocean Swim |
29 DEC 93 |
18 pages |
| Authors:
W. K. Prusaczyk; H. W. Goforth Jr.; T. Sopchick; P. Griffith; K. Schneider; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| The rmal stress can have a substantial negative impact on the performance of Naval Special Warfare (NSW) personnel during training and missions. This effect is especially evident during prolonged operations in cold water. Cold water is a particularly inhospitable environment. Heat conduction of water is 25 times that of air causing loss of body heat two to four times faster in water than in air at the same temperature. The ... |
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| Combined Strength and Endurance Training: Functional and Morphological Adaptations to Ten Weeks of Training |
29 SEP 92 |
20 pages |
| Authors:
J. McCarthy; P. Griffith; W. K. Prusaczyk; H. W. Goforth Jr.; A. Vailas; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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| The literature suggests that muscular strength development can be inhibited when endurance and strength training programs are combined. The purpose of this study was to examine the effects of strength and endurance training programs, individually and in combination, on performance changes and associated muscle adaptations. Sedentary males (n=30) were randomly assigned to one of three training groups: strength-only (STR), endurance-only (END), or combined strength and endurance (COM). Subjects trained three ... |
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| Effectiveness of Glycerol Ingestion for Enhanced Body Water Retention during Cold Water Immersion |
AUG 89 |
30 pages |
| Authors:
H. W. Goforth Jr.; D. A. Arnall; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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| The efficacy of ingesting an aqueous glycerol (GLY) solution to reduce diuresis and enhance body water retention during prolonged cold water dives was tested. Six subjects were assigned to either a water treatment (WT) or glycerol treatment (GT) group. During the predive period, divers drank approximately 2 liters of flavored water solutions 30 milliliters per kilogram (ml/kg) lean body mass (LBM) with or without GLY (1.5 ml/kg LBM). Total urine ... |
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| Biochemical Responses of Navy Special Warfare Personnel to Carbohydrate Loading and Physical Performance |
1982 |
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| Authors:
J. A. Hodgdon; H. W. Goforth Jr.; R. L. Hilderbrand; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
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 | Selected biochemistries were monitored in 9 Navy Special Warfare personnel during a program of carbohydrate loading (LOAD), during a control, nonloading program (NONLOAD), and during an endurance test subsequent to each program. Each program required 6 days with the endurance test on the 7th. The endurance test consisted of interrupted running (18 min. running/2 min. rest) to voluntary exhaustion on a treadmill at a speed requiring an energy expenditure of ... |
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