| The Effect of Interactive Simulations on Exercise Adherence with Overweight and Obese Adults |
Dec-2008 |
7 pages |
| Authors:
Sarah D Miyahira; UNIVERSITY CLINICAL EDUCATION AND RESEARCH ASSOCIATES HONOLULU HI
|
 | This project was designed to evaluate the effect of video game play on exercise motivation, self-efficacy, and adherence in overweight and obese adults. Unanticipated events required modifications to the project schedule and delayed data collection. Exercise equipment and software that met the study requirements were not available. Therefore, the project team opted to develop a prototype stationary exercise bicycle that integrated video game play capabilities, and to create software that ... |
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| The Influence of Thermal Exposure on Diver Susceptibility to Decompression Sickness |
NOV 2007 |
70 pages |
| Authors:
Wayne A. Gerth; Victor L. Ruterbusch; Edwin T. Long; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
|
| The incidences of decompression sickness (DCS) were compared in divers who completed air decompression dives while fully immersed in water at temperature controlled independently [either warm (36.1 C, 97 OF) or cold (26.7 C, 80 OF)] during bottom time (BT) and decompression phases. Divers wore only loosely fitting swim trunks, t-shirts, and neoprene boots and dive gloves, performed cycle ergometer exercise while at bottom, rested during decompression, and remained under ... |
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| Met Nuclear Localization and Signaling in Breast Cancer |
01 MAY 2007 |
23 pages |
| Authors:
Sharon P. Moulis; YALE UNIV NEW HAVEN CT
|
| To explore the effects of exercise training on tumor vascularity and response to neoadjuvant therapy in operable breast cancer in a phase I-II randomized design. Method: Using a two-armed prospecbve randomized design potential participants will be identified and screened for eligibility via medical record review of patients scheduled for their primary neoadjuvant chemotherapy treatment consultation at DUMC. Following the successful completion of all baseline assessments participants will be randomly assigned ... |
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| The Effects of Exercise Training on Tumor Vascularity and Response to Neoadjuvant Therapy in Operable Breast Cancer: A Phase I-II Study (Idea Award) |
NOV 2006 |
20 pages |
| Authors:
Lee W. Jones; Bercedis Peterson; Kimberly Blackwell; Mark W. Dewhirst; P. K. Marcom; WIlliam Kraus; Jay Baker; Jason D. Allen; M D ANDERSON CANCER CENTER HOUSTON TX
|
| To explore the effects of exercise training on tumor vascularity and response to neoadjuvant therapy in operable breast cancer in a phase I-II randomized design. Method: Using a two-armed, prospective, randomized design, potential participants will be identified and screened for eligibility via medical record review of patients scheduled for their primary neoadjuvant chemotherapy treatment consultation at DUMC. Following the successful completion of all baseline assessments participants will be randomly assigned ... |
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| Seven Days of Intermittent Altitude Exposures Improve Endurance Performance at 4300 M |
APR 2006 |
20 pages |
| Authors:
B. A. Beidleman; S. R. Muza; C. S. Fulco; A. Cymerman; M. N. Sawka; S. F. Lewis; G. S. Skrinar; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
|
| The purpose of this study was to determine if seven days of intermittent altitude exposures (IAE), in combination with either rest or exercise training could improve endurance performance and induce physiologic adaptations that are consistent with altitude acclimatization at 4300 m. Ten adult lowlanders (26 plus or minus 2 yrs; 77 plus or minus 4 kg; 1 74 plus or minus 3 cm; means plus or minus SE) completed a ... |
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| Changes in Ventilatory Threshold at High Altitude: Effect of Antioxidants |
2006 |
8 pages |
| Authors:
Andrew W. Subudhi; Kevin A. Jacobs; Todd A. Hagobian; Jill A. Fattor; Charles S. Fulco; Allen Cymerman; Anne L. Friedlander; COLORADO UNIV AT COLORADO SPRINGS
|
| To investigate the effects of prolonged hypoxia and antioxidant supplementation on ventilatory threshold(VT) during high-altitude(HA) exposure (4300M). Methods: Sixteen physically fit male (25 + 5, 77.8 + 8.5 kg) performed an incremental test to maximal exertion on a cycle ergometer at sea level (SL) |
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| Carbohydrate Supplementation and Endurance Performance of Moderate Altitude Residents at 4300 m |
2006 |
8 pages |
| Authors:
C. S. Fulco; M. Zupan; S. R. Muza; P. B. Rock; K. Kambis; T. Payn; M. Hannon; E. Glickman; A. Cymerman; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
|
| Recent work from our laboratory demonstrated that carbohydrate supplementation (CHOS) during exercise improved prolonged time-trial (TT) performance of sea-level residents (SLR) living at 4300 m while they were in daily negative energy balance (-1250 kcal/day). The purposes of the current study were to determine during initial exposure to 4300 m: 1) whether CHOS also improves TT performance of moderate altitude residents (MAR) who are in energy balance and 2) if ... |
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| The Influence of Hydration Status on Heat Rate Variability After Exercise Heat Stress |
2005 |
9 pages |
| Authors:
111 Carter Robert; Cheuvronta Samuel N.; D. W. Wray; Margaret A. Kolka; Lou A. Stephensona; Michael N. Sawka; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
|
| While exercise heat stress and hydration status are known to independently influence heart rate variability (HRV), the combined effect of these physiological stressors is unknown. Thus, heat-acclimated subjects (t = 5) performed exercise heat trials (40 deg C, 20% relative humidity) in the euhydrated and hypohydrated state (3.9 + or - O.7% body weight loss). During each trial, cardiac cycle R-R interval data were collected for 45 min at rest ... |
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| Altitude Decompression Sickness at 7,620 m Following Prebreathe Enhanced With Exercise Periods |
01 OCT 2004 |
10 pages |
| Authors:
James T. Webb; Andrew A. Pilmanis; Ulf I. Balldin; WYLE LABS LIFE SCIENCES AND SERVICES INC SAN ANTONIO TX
|
| Over 80% altitude decompression sickness (DCS) was reported during a 4-h exposure with mild exercise to 7620 m (25,000 ft) without prebreathe. Prebreathe for more than 1 h would be necessary to reduce the DOS risk below 40%. Use of a single period of exercise to enhance prebreathe effectiveness has been successfully tested and used during some U-2 operations. The current tests used multiple exercise sessions to enhance prebreathe (MEEP) ... |
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| An Exercise Model to Study Progressive Muscle Fatigue During Constant Work Rate Exercise on a Cycle Ergometer |
JUL 2003 |
39 pages |
| Authors:
Charles S. Fulco; Paolo Bonato; Don Gilmore; Steven F. Lewis; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA THERMAL AND MOUNTAIN MEDICINE DIVISION
|
| To gain insight into mechanisms of muscle fatigue in common everyday activities such as bicycling and running, those muscles which limit performance should be studied by tracking the fatiguability of the same muscles during the activity. However, conventional ergometric testing modes such as stationary cycling or treadmill exercise do not readily lend themselves to quantitating the progressive increase in muscle fatigue, characterized by a loss of muscle power. It has ... |
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| Exercise Heart Rate as a Predictor of Oxygen Consumption During Decompression from Saturation Diving |
NOV 2002 |
25 pages |
| Authors:
Barbara E. Shykoff; Marie E. Knafelc; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
|
| The correlation between heart rate and oxygen consumption has been questioned during submerged exercise or exercise under pressure. We studied the relationships of heart rate to oxygen consumption (VO2) and of VO2 to ergometer setting in eight divers during decompression from a saturation dive in a helium-oxygen atmosphere. Measurements were made at 300,190, 66, and 33 feet of seawater (1019, 682, 303, 202 kPa (a)). VO2 during submerged exercise (maximum ... |
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| Effect of Endogenous 17B Estradiol on Core Temperature and Skin Blood Flow in Healthy, Eumenorrheic Women: A Report of Three Studies |
OCT 2000 |
35 pages |
| Authors:
Margaret A. Kolka; Catherine B. Boulant; Leslie Levine; Lou A. Stephenson; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
|
| These studies were done to describe the pre-ovulatory phase core temperature decrease in healthy, eumenorrheic women as a change in the regulated body temperature set point. In Study 1, subjects walked at a moderate exercise intensity wearing personal protective equipment. In Study 2, the environment mimicked that under the PPE in the first study during cycle exercise when dressed in t-shirts and shorts. In Study 3, ... |
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| A Foggy Start: Determining the Effect of Eyewear Fogging on Visual Task Performance |
01 AUG 2000 |
|
| Authors:
R. Sloan; J. M. Crebolder; R. Tyler; DEFENCE AND CIVIL INST OF ENVIRONMENTALMEDICINE DOWNSVIEW (ONTARIO)
|
 | To evaluate the effect of fogging of eyewear on task performance and to assess the effectiveness of an anti-fog coating, nine participants completed a visual search task under conditions simulating the two most likely occurrences of eyewear fogging. In the static environment, participants performed a visual search task while seated in front of a computer terminal. The eyewear was cold soaked in a cooler prior to being donned to simulate ... |
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| Submaximal Cycle Ergometry as a Predictor of Maximal Aerobic Capacity inWomen on Oral Contraceptives |
DEC 1999 |
97 pages |
| Authors:
Jannell C. MacAulay; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| Predicted maximal aerobic capacity (VO2max), using submaximal exercise tests, is used to evaluate fitness for job performance, especially within the military. Women who use oral contraceptives experience a rhythmic variation of circulating synthetic hormones that can influence submaximal exercising heart rate. The purpose of this study was to examine the validity and reliability of two submaximal heart rate-dependent cycle ergometry exercise tests, one used by ... |
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| Manned Testing of Fullerton Sherwood SIVA 55-VSW Underwater Breathing Apparatus (UBA) for Very Shallow Water (VSW) Mine Countermeasure (MCM) Missions |
08 NOV 1999 |
32 pages |
| Authors:
Edwin T. Long; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
|
| Presently, no specific diving apparatus on the Authorized for Navy Use (ANU) list meets the demands set forth by the CNO to conduct very shallow water mine countermeasure (VSW MCM) operations. NEDU was tasked to test and evaluate the Fullerton Sherwood SIVA 55-VSW Underwater Breathing Apparatus (UBA) , to determine whether it will maintain a sufficient O2 fraction to support a working diver from the surface ... |
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| Submaximal Aerobic Fitness Evaluation |
MAR 1999 |
65 pages |
| Authors:
Philip R. Stanforth; Jack H. Wilmore; John B. Bartholomew; Gerald De Wolfe; David G. Mathews; TEXAS UNIV AT AUSTIN
|
| Phase 1A: Twenty-five healthy males, 18 to 30 years of age, completed this study to cross-validate the Banister-Legge (B-L) submaximal cycle ergometry test. The B-L nomogram for untrained and trained subjects and the USAF CE significantly underestimated the measured VO2 sub max. The B-L nomogram was not recommended as a protocol for use by the USAF. Phase 1B: Fifty-eight males and 61 females, 18 to 48 years ... |
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| Performance of a Portable Oxygen Breathing System at 25,000 Feet Altitude |
NOV 1998 |
11 pages |
| Authors:
R. P. Garner; R. E. Murphy; C. B. Hudgins; J. G. Mandella Jr.; FEDERAL AVIATION ADMINISTRATION OKLAHOMA CITY OK CIVIL AEROMEDICAL INST
|
| A portable oxygen system utilizing open port dilution rebreathing mask technology was tested for its ability to deliver an adequate supply of oxygen at an altitude of 25,000 feet above sea level. Twenty-two subjects, ii females and 11 males, participated in the study. Blood oxygen saturation (SaO2) baseline levels for hypoxic exposure were established for each subject. Altitude testing consisted of the subject being placed in a hypobaric chamber and ... |
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| Reduction of Invalid Assessments During Cycle Ergometry Testing |
09 SEP 1998 |
43 pages |
| Authors:
Wayne M. Pritt; AIR FORCE INST OF TECH WRIGHT-PATTERSONAFB OH
|
| This investigation will measure the magnitude of the reduction in cycle ergometry invalid test results manifested by a change in the definition of steady-state heart rate from 3 beats per minute to 5 or 6 beats per minute. It will further assess the possible impact of such a change on the ability of the CET to accurately predict aerobic capacity. |
|
| Validity of Submaximal Cycle Ergometry for Estimating Aerobic Capacity |
AUG 1998 |
40 pages |
| Authors:
Loren Myhre; Gill Tolan; Daniel Bauer; Joseph Fischer; AIR FORCE RESEARCH LAB BROOKS AFB TX HUMAN EFFECTIVENESS DIRECTORATE
|
| The accepted method for determining maximal oxygen consumption is collection and analysis of expired gases which has been limited to the research laboratory. Although a variety of tests may be more practical, the relative safety, validity, and reliability has been a concern. To simplify the Wahlund/ Astrand-Rhyming protocols to enhance test precision as well as making it reasonable for the non-technically trained test administrator, a procedure has been developed that ... |
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| Restoration of Peak Vascular Conductance After Simulated Microgravity byMaximal Exercise |
1998 |
11 pages |
| Authors:
Keith A. Engelke; Benjamin D. Levine; Victor A. Convertino; ARMSTRONG LAB BROOKS AFB TX AEROSPACE MEDICINE DIRECTORATE
|
| We sought to determine if: (1) peak vascular conductance (Gmax) of the calf was reduced following exposure to prolonged simulated microgravity, and (2) if maximal cycle ergometry performed at the end of microgravity exposure stimulated a restoration of Gmax. To do this, Gmax was recorded following ischemic plantar flexion exercise to fatigue in seven men after 16 days of head- down tilt (HDT) under two conditions: (1) ... |
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| Expanded Air Force Physical Fitness Battery: Muscle Strength, Muscle Endurance, and Flexibility Considered. Workshop Proceedings |
30 OCT 1997 |
15 pages |
| Authors:
Barbara Palmer; Stephen Copnstable; Neal Baumgartner; CREW SYSTEM ERGONOMICS INFORMATION ANALYSIS CENTER WRIGHT- PATTERSON AFB OH
|
| This Proceedings document summarizes the discussion that took place during the Expanded Physical Fitness Workshop, sponsored by the US Air Force Office for Prevention and Health Services Assessment and supported by the Crew System Ergonomics Information Analysis Center (CSERIAC), held at the Dayton Airport Inn, Dayton, Ohio, on July 31, l997. The purpose of this meeting was to attain consensus among a group of subject-matter experts on the advantages and ... |
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| Expanded Air Force Physical Fitness Battery: Muscle Strength, Muscle Endurance, and Flexibility Considered. Volume I, Final Report |
30 OCT 1997 |
77 pages |
| Authors:
Barbara Palmer; Jennifer Soest; CREW SYSTEM ERGONOMICS INFORMATION ANALYSIS CENTER WRIGHT- PATTERSON AFB OH
|
| The current Air Force fitness test is a submaximal cycle ergometry test which is used to estimate cardiovascular fitness. Interest in adding to this fitness requirement has arisen from several quarters. CSERIAC, the Crew System Ergonomics Information Analysis Center, produced this Review & Analysis that analyzes advantages and disadvantages to the Air Force of adding muscle strength, muscle endurance, and flexibility requirements to the Air Force fitness battery. It was ... |
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| Hormonal Contraception, Body Water Balance and Thermoregulation |
OCT 1997 |
|
| Authors:
Ethan R. Nadel; JOHN B PIERCE FOUNDATION LAB NEW HAVEN CT
|
| To test the hypothesis that estrogen enhances water and sodium retention, we compared the fluid regulatory responses to 150 min of exercise-induced dehydration, followed by 180 min of ad libitum drinking during the follicular and luteal phases of the menstrual cycle, and following treatment with an estrogen/progestin oral contraceptive (oCP) and a progestin-only oCP, in a double-blind, randomized, cross-over design. The women (n=9, 25 + 1 yr, 62.5 + 3.6kg,) ... |
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| Telemetry Pill Measurement of Core Temperature during Active Heating and Cooling |
JUL 1997 |
27 pages |
| Authors:
Catherine O'Brien; Reed W. Hoyt; Mark J. Buller; John W. Castellani; Andrew J. Young; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
|
| The agreement between core temperature measurements obtained using an ingestible temperature pill telemetry system (T sub pill) and rectal (T sub re) and esophageal (T sub es) thermocouples was compared under conditions of both increasing and decreasing body temperature. Nine subjects participated in four 3-h trials: cold (18 deg C) water rest (CWR); cold water exercise (CWE); warm (36 deg C) water rest (WWR); and warm water exercise (WWE). During ... |
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| The Effect of Multiple High +Gz Exposure on Male and Female Isometric Strength in Both Rested and Sleepless Conditions |
JAN 97 |
22 pages |
| Authors:
Lloyd D. Tripp Jr.; Steve Bolia; Tamara Chelette; SYSTEMS RESEARCH LABS INC DAYTON OH
|
| The inclusion of women into the high performance aircraft community has raised several questions concerning body strength as it relates to cockpit performance and muscular fatigue. This study evaluated isometric strength of men and women pre and post-G exposure in both a rested and sleepless state. Fourteen subjects (8 male and 6 female) took part in a study which evaluated isometric strength pre and post-Gz acceleration using a static ergometer ... |
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| The Effects of an Acute Bout of Strenuous Aerobic Exercise on Plasma, Erythrocyte, Urinary and Dietary Values for Selected Trace Minerals |
09 DEC 96 |
118 pages |
| Authors:
Kimberly K. Edgren; TEXAS WOMAN'S UNIV DENTON
|
| Nineteen competitive cyclists participated in a week-long study to determine if prolonged, intense aerobic exercise produced a significant change in plasma, erythrocyte, and/or urine values for zinc(Zn) and copper(Cu). Subjects pedaled a cycle ergometer for 1 hour at 80% anaerobic threshold, after which, resistance was incrementally increased by 20 watts/minute until voluntary exhaustion. Six blood collections were drawn: pre-exercise, post-exercise and 2- , 24-, 72-, and 120-hours post-exercise, respectively. Five ... |
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| Decompression Sickness Resulting from Long Shallow Air Dives |
22 MAY 96 |
13 pages |
| Authors:
C. L. Shake; P. K. Weathershy; D. Wray; E. C. Parker; NAVAL SUBMARINE MEDICAL RESEARCH LAB GROTON CT
|
| The objective of this research was to provide human decompression data, including the occurrence and timing of resulting DCS cases, in a range of depths and bottom times which are inadequately represented in the Primary Air and N2-O2 data set. The occurrence of DCS was examined in 57 man-dives to depths between 8.5 and 12.2 msw (28 and 40 fsw) for six hours on air. During exposure, divers exercised using ... |
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| Climate and Work Load Both Interact with Individual Characteristics in Determining the Human Heat Stress Response (Klimaat en Werkbelasting Beinvloeden Beide de Individuele Karakteristieken bij het Bepalen van de Menselijke Reactie op Hittebelasting) |
08 DEC 95 |
|
| Authors:
G. Havenith; J. M. Coenen; J. A. Kistemaker; HUMAN FACTORS RESEARCH INST TNO SOESTERBERG (NETHERLANDS)
|
| Heat exposure data from comparable heterogeneous subject groups (Large variations in VO(2max), mass, body surface area (A%), fat content, A(du)/ mass ratio) who worked on a cycle ergometer at a Load relative to their V0(2max) (RL) in a cool (CO; 2l deg C, 50%rh), warm humid (WH; 35 deg C, 80%) and a hot dry (HD; 45 deg C, 20%) environment (n=24) or who worked at a fixed toad (FL; ... |
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| Adaptations to Three Weeks of Aerobic/Anaerobic Training in West Coast U.S. Navy Sea-Air-Land Personnel (SEALS) |
DEC 94 |
25 pages |
| Authors:
I. Jacobs; W. K. Prusaczyk; H. W. Goforth Jr; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| SEALS must optimize physical training "efficiency" i.e., adaptation per unit training time. This study was designed to determine if a single training program could simultaneously elicit aerobic and anaerobic adaptations. SEALs were assigned to groups matched for initial aerobic and anaerobic fitness. Each group trained on cycle ergometers for 30 min 3 times per week as follows: continuous (CNT; n=8) at 70% VO sub 2peak; intermittent (TNT; n=6) at an ... |
|
| Evaluation of a Newly-Designed, Dynamic Knee Extension Device for the Study of Muscle Fatigue in Humans |
02 SEP 94 |
40 pages |
| Authors:
Charles S. Fulco; Steven F. Lewis; Peter N. Frykman; Robert Boushel; Sinclair Smith; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
|
| A device utilizing a simple pulley system was developed to study muscle fatigue during dynamic, submaximal exercise isolated to the knee-extensor muscles of one or both legs. The purposes of this study were to determine the following: (1) oxygen consumption requirements for various submaximal and maximal power outputs and to compare these data to values obtained from published reports using modified bicycle ergometers (criterion devices), (2) intraindividual test-retest variability, and ... |
|
| Comparison of Submaximal Cycling and Treadmill Exercise at Similar Work Rates |
JUL 94 |
15 pages |
| Authors:
David M. Caretti; EDGEWOOD RESEARCH DEVELOPMENT AND ENGINEERING CENTER ABERDEEN PROVING GROUND MD
|
| The increased use of both the treadmill and cycle ergometer for exercise testing during respirator wear has escalated the need to compare the physiological response relationships between modes. This study compared circulatory, respiratory, and metabolic responses of submaximal cycling and treadmill exercise of similar work rates in 8 males and 6 females to determine whether the two exercise modes elicited different responses. Gender differences for each exercise mode were also ... |
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| Methods to Obtain Blood Samples Periodically During Exercise Research Studies While Subjects are Immersed in Water or Otherwise Inaccessible |
JAN 93 |
14 pages |
| Authors:
J. W. Thorp; J. R. Roberts; T. J. Doubt; NAVAL MEDICAL RESEARCH INST BETHESDA MD
|
| We describe a method to obtain periodic blood samples during exercise studies by use of an indwelling intravenous catheter. A step-by-step process for establishing the intravenous line and obtaining samples is also described. Steps we have found especially useful to facilitate the process and to avoid complications are presented in more detail. A list of supplies required for the process is included. With these methods, we have been able to ... |
|
| United States Air Force Summer Research Program 1992 (SFRP). Summer Research Extension Program Final. Volume 1A. Armstrong Laboratory |
28 DEC 92 |
435 pages |
| Authors:
Gary Moore; RESEARCH AND DEVELOPMENT LABS CULVER CITY CA
|
| The purpose of this program is to develop the basis for continuing research of interest to the Air Force at the institution of the faculty member; to stimulate continuing relations among faculty members and professional peers in the Air Force to enhance the research interests and capabilities of scientific and engineering educators; and to provide follow-on funding for research of particular promise that was started at an Air Force laboratory ... |
|
| United States Air Force Summer Research Program 1992 (SFRP). Volume 1B. Summer Research Extension Program Final Reports. Volume 1B. Armstrong Laboratory |
28 DEC 92 |
415 pages |
| Authors:
Gary Moore; RESEARCH AND DEVELOPMENT LABS CULVER CITY CA
|
| The purpose of this program is to develop the basis for continuing research of interest to the Air Force at the institution of the faculty member; to stimulate continuing relations among faculty members and professional peers in the Air Force to enhance the research interests and capabilities of scientific and engineering educators; and to provide follow-on funding for research of particular promise that was started at an Air Force laboratory ... |
|
| Acute Physiological Responses While Wearing Various Configurations of the MCU-2/P Groundcrew Chemical Defense Mask |
OCT 92 |
|
| Authors:
Melchor J. Antunano; Yasu T. Chen; Stefan H. Constable; KRUG LIFE SCIENCES SAN ANTONIO TX SAN ANTONIO DIV
|
| Resistance to breathing is a major factor that determines individual tolerance to physical work while wearing a protective mask. This study evaluated some of the acute effects associated with the use of the MCU-2/P mask. Three MCU-2/P mask configurations (MC) were tested: mask + 1 filter (MCU-IF), mask + 2 filters in parallel (MCU-2F), and mask + 1 filter + air blower (MCU-lAB). The air blower provided 65 L min-1 ... |
|
| Muscle Glycogen, Fiber Type, Aerobic Fitness, and Anaerobic Capacity of West Coast U.S. Navy Sea-Air-Land Personnel (SEALS) |
JUL 92 |
31 pages |
| Authors:
Ira Jacobs; W. K. Prusaczyk; Harold W. Goforth Jr; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| Thirty-eight Navy SEALs performed aerobic fitness and maximal anaerobic capacity tests on a cycle ergometer. Lactic acid concentration was measured in blood samples taken during the aerobic fitness test. After recording prior dietary intake and physical activity, thirty-six subjects had biopsies taken from the vastus lateralis muscle. Biopsy results showed that SEALs averaged 55% fast twitch muscle fiber type. The muscle samples had a mean glycogen concentration of 404 (+ ... |
|
| Influence of Knee Joint Extension on Submaximal Oxygen Consumption and Anaerobic Power in Cyclists |
05 JUN 91 |
57 pages |
| Authors:
Jesse Garcia; AIR FORCE INST OF TECH WRIGHT-PATTERSON AFB OH
|
| This study was designed to assess the effect of alterations of maximal knee joint extension on submaximal VO2, anaerobic peak power, and the anaerobic mean power in cycling. Eleven amateur male bicycle racers between the ages of 19 and 35 years were selected, for participation in this study. The subjects were randomly assigned to one of four groups. All subjects performed a five minute submaximal exercise test and a Wingate ... |
|
| Optimal Hydrostatic Loading for Closed-Circuit Underwater Breathing Apparatus Design |
MAR 91 |
|
| Authors:
John R. Clarke; NAVAL MEDICAL RESEARCH INST BETHESDA MD
|
| During the course of 3 shallow air-saturation dives, over 100 man- dives were made to 29 fsw with closed-circuit Underwater Breathing Apparatus (UBA) to test the effect of various hydrostatic loads on exercising divers. Both the MK-15 and EX-19 UBA were used. While in the erect sitting position, divers warmed-up for 5 min at 50 W, followed by 25 min of moderately heavy work (1.4 W/ kg) on a submerged ... |
|
| Pyridostigmine and Warm Water Diving Protocol 90-05. 5. Hydration Status |
DEC 90 |
|
| Authors:
D. M. Stevens; D. Hyde; K. J. Haberman; J. W. Thorp; T. J. Doubt; NAVAL MEDICAL RESEARCH INST BETHESDA MD
|
| Hydration status and changes in venous blood levels of lactate and glucose were measured in divers exposed to heat and warm water after taking pyridostigmine in doses used for prophylaxis against chemical nerve gas agents. Ten heat-acclimated U.S. Navy divers spent 4 h in a hot air environment (100 F, 50% humidity) followed by 3 h immersed in warm water in a chamber pressurized to the equivalent of 20 feet ... |
|
| COLDEX-86: Physical Work Capacity during Prolonged Cold Water Immersion at 6.1 msw |
DEC 90 |
|
| Authors:
T. J. Doubt; D. J. Smith; NAVAL MEDICAL RESEARCH INST BETHESDA MD
|
| Response to submaximal leg exercise was quantified in 16 U.S. Navy divers who performed whole body immersions in 5 C water for periods of up to 6 h. Diverse wore passive dry suit thermal protection. Immersions were done during the course of 5-day air saturation dives at a depth of 6.1 msw (20 fsw). Each diver participated in 2 saturation dives. Two immersions were conducted per dive, one beginning at ... |
|
| Training Program for Instrumentation, Telemetry, and Exercise Ergometry |
NOV 90 |
67 pages |
| Authors:
G. C. Brown; Clifford J. Sherry; SYSTEMS RESEARCH LABS INC DAYTON OH
|
| An applied, multi-dimensional primate model is described that will allow extrapolation from the animal model to humans in similar conditions. In the primate model, simultaneous measurements of physiological and metabolic parameters are made in resting and exercising conditions, in an environment that allows independent manipulations of ambient temperature and humidity. The intensity of exercise is under stimulus control. |
|
| Pyridostigmine and Warm Water Diving Protocol 90-05: 2. Thermal Balance |
NOV 90 |
|
| Authors:
D. Hyde; R. P. Weinberg; D. M. Stevens; T. J. Doubt; NAVAL MEDICAL RESEARCH INST BETHESDA MD
|
| A study was conducted to evaluate whether pretreatment with pyridostigmine affected the thermal balance of divers in warm water conditions. Ten U.S. Navy divers participated in three separate 7-hour exposures. Each test involved a 4-hour exposure in 37.8 C air (100 F at the surface, followed by a 3- hour immersion in 34.4 C (94 F) water at a depth of 20 fsw (1.6 ATA). The first two immersed exposures ... |
|
| A Simplified Version of the Wingate Anaerobic Power Test |
19 JUL 90 |
|
| Authors:
Anthony C. Hackney; NAVAL HEALTH RESEARCH CENTER SAN DIEGO CA
|
| A study was undertaken to develop a modified Wingate anaerobic power (WAP) test that could be administered with a minimum of equipment and personnel. This study was done in the summer of 1989, under contract with the University of North Carolina. The accuracy of using the time to pedal either 240, 270, or 300 M (at a resistance of 0.095 kp/kg of body weight) on a stationary ergometer as a ... |
|
| Thermal Responses During Extended Water Immersion: Comparisons of Rest and Exercise, and Levels of Immersion |
01 APR 90 |
|
| Authors:
Michael M. Toner; William D. McArdle; CITY UNIV OF NEW YORK
|
| Fourteen male volunteers participated in Phase 1 of the project. Prior to experimental tests, subjects completed a medical evaluation and were cleared for testing by a physician, and performed body composition and maximal aerobic power tests on both a treadmill and bicycle ergometer. Mean age, height and weight of the group were 25.0 yr, 176.0 cm and 76.6 kg, respectively. Three groups of subjects were formed on the basis of ... |
|
| Thermal Evaluation of Two Prototype Aircrew Chemical Defense Ensembles |
AUG 89 |
18 pages |
| Authors:
Larry P. Krock; John R. Garza; Janet Wiegman; SCHOOL OF AEROSPACE MEDICINE BROOKS AFB TX
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| Individual aircrew members are protected against chemical warfare environments by the Aircrew Chemical Defense Ensemble (ACDE). The current regulation ACDE (flight suit coverall worn over an activated charcoal undergarment) inhibits dissipation of body heat, resulting in severe physiological limitations on task performance. Several second-generation ACDE prototype designs are undergoing review by the U.S. Air Force Life Support System Program Office. Two of these candidate ACDEs were compared to the current ... |
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| The Effect of Concurrent Strength and Endurance Training on Electromechanical Delay, Maximum Voluntary Contraction, and Rate of Force Development |
AUG 89 |
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| Authors:
D. G. Bell; I. Jacobs; D. G. Sale; J. D. MacDougall; DEFENCE AND CIVIL INST OF ENVIRONMENTAL MEDICINE DOWNSVIEW (ONTARIO)
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| This study compared the effect of strength and endurance training and their combination on electromechanical delays (EMD), rate of force development (RFD) and maximum voluntary isometric contraction force (MVC) of the knee extensors in male and female subjects. The seven male and six female subjects were separated into a strength trained group (SG), 3 males and 3 females, and an endurance group (EG), 4 males and 3 females. The SG ... |
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| Acetylcholinesterase Inhibitor, Pyridostigmine Bromide, Reduces Skin Blood Flow in Humans |
MAY 89 |
26 pages |
| Authors:
Lou A. Stephenson; Margaret A. Kolka; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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| Five subjects exercised on a cycle ergometer for 30 min at 55% peak VO2 on two occasions in a slightly warm environment. Pyridostigmine bromide (PYR), an acetylcholinesterase (AChE) inhibitor, was ingested (30 mg) approximately 150 min before one experiment, and no drug was administered during the other experiment (control). Red cell AChE inhibition averaged during PYR treatment. Esophageal temperature (Tes), a derived mean skin temperature, forearm blood flow (venous occlusion ... |
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| Emergency Breathing Apparatus MK 18 Mod 1 Canister Performance Study at 844 FSW |
MAY 89 |
17 pages |
| Authors:
Marie E. Knafelc; NAVY EXPERIMENTAL DIVING UNIT PANAMA CITY FL
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| The MK 18 MOD 1 emergency breathing apparatus (EBA) is a semi-closed circuit breathing apparatus designed to operate as a component of a built-in breathing system (BIBS) in a diver support facility. The EBA design includes two gas flow orifices, one to support a working diver, Oxygen consumption rate 3.0 slpm, the other to support a resting diver, Oxygen consumption rate 0.75 slpm. High Performance Sodasorb or LiOH can be ... |
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| The Effects of High Intensity Cycle Exercise on Sympatho-Adrenal- Medullary Response Patterns |
89 |
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| Authors:
William J. Kraemer; John F. Patton; Howard G. Knuttgen; Charles J. Hannan; Thomas Kettler; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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| Plasma proenkephalin Peptide F immunoreactivity (ir) and catecholamines were examined before and after maximal exercise to exhaustion at four intensities 36, 55, 73 and 100% maximal leg power (MLP) by means of a high resistance cycle ergometer. All intensities were greater than those eliciting peak O2 uptake for the individual subjects. Blood samples were obtained immediately after exercise and at 5 and 15 main post-exercise. Data suggest that exercise-induced increases ... |
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| Factors in Maximal Power Production and in Exercise Endurance Relative to Maximal Power |
13 OCT 88 |
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| Authors:
J. F. Patton; W. J. Kraemer; H. G. Knuttgen; E. A. Harman; ARMY RESEARCH INST OF ENVIRONMENTAL MEDICINE NATICK MA
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| The relationship of muscle fiber type and mass to maximal powe r production and the maintenance of power (endurance time to exhaustion) at 36, 55, and 73% of maximal power was investigated in 18 untrained but physically active male subjects. Power output was determined at constant velocity (60 RPM) on a high intensity cycle ergometer instrumented with force transducers and interfaced with a computer. Fat free mass was determined by ... |
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