Author: Raymond H. MurrayPublisher:
ISBN:
Category : Space flight
Languages : en
Pages : 416
Book Description
Hypogravic and Hypodynamic Environments
Author: Raymond H. MurrayPublisher:
ISBN:
Category : Space flight
Languages : en
Pages : 416
Book Description
Hypogravic and hypodynamic environments
Author: Scientific and Technical Aerospace Reports
Author: Publisher:
ISBN:
Category : Aeronautics
Languages : en
Pages : 892
Book Description
Lists citations with abstracts for aerospace related reports obtained from world wide sources and announces documents that have recently been entered into the NASA Scientific and Technical Information Database.
Toward a Better Tomorrow with Aeronautical and Space Technology
Author: United States. Congress. Senate. Committee on Aeronautical and Space SciencesPublisher:
ISBN:
Category : Technology transfer
Languages : en
Pages : 212
Book Description
NASA Authorization for Fiscal Year 1974
Author: United States. Congress. Senate. Committee on Aeronautical and Space SciencesPublisher:
ISBN:
Category :
Languages : en
Pages : 816
Book Description
Department of Housing and Urban Development, Space, Science, Veterans, and Certain Other Independent Agencies Appropriations for Fiscal Year 1974
Author: United States. Congress. Senate. Committee on AppropriationsPublisher:
ISBN:
Category : United States
Languages : en
Pages : 952
Book Description
Underwater Medicine and Related Sciences
Author: Charles Wesley ShillingPublisher: Springer Science & Business Media
ISBN: 1468485008
Category : Science
Languages : en
Pages : 704
Book Description
This volume follows and updates AN ANNOTATED BIBLIOGRAPHY ON DIVING AND SUBMARINE MEDICINE published by Gordon and Breach, Science Publishers, Inc., in 1971. The time period covered is primarily the calendar years 1970 and 1971. Also included, however, is much material from the calendar years 1968 and 1969 not in the previous publication. A brief analysis of the sources of material precedes the citations and abstracts, which comprise the main section of the volume. The bibliography is followed by a permuted subject index and an author index. Also included, following the indexes, is a micro thesaurus. Although no attempt has been made to do a critical subject analysis, such an analysis could be accomplished through selecting a particular subject, looking up the appropriate key works in the rotated index, identifying the abstracts, analyzing them, obtaining complete copy as desired, and completing the critical review. David C. Weeks, Ph.D. Director, BSCP Washington, D.C.
Exercise Countermeasures for Bed-rest Deconditioning
Author: John Edward GreenleafPublisher:
ISBN:
Category :
Languages : en
Pages : 234
Book Description
The purpose for this 30-day bed-rest study was to investigate the effects of short-term, high-intensity isotonic and isokinetic exercise training on maintenance of aerobic work capacity (peak oxygen uptake); muscular strength and endurance; and orthostatic tolerance, equilibrium, and gait. Other data were collected on muscle atrophy, bone mineralization and density, endocrine analyses of vasoactivity and fluid-electrolyte balance, muscle intermediary metabolism, and performance and mood of the subjects. Nineteen men (32-42 yr) were allocated into three groups: no-exercise control (peak oxygen uptake and isokinetic tests once/wk, N = 5), isotonic exercise training (electronic Quinton ergometer, supine, N = 7), and isokinetic exercise training (electronic Lido ergometer, supine, N = 7). The exercise training regimens were conducted near peak levels for 30 min in the morning and 30 min in the afternoon 5 d/wk. The protocol consisted of a 7-d ambulatory control period during which the subjects equilibrated on the standardized diet, 30 d of 6 degrees head-down bed rest, and a final 4.5 d of ambulatory recovery. Their diet consisted of commonly available fresh and frozen foods; mean caloric consumption of 2,678 +/- SE 75 kcal/d (control), 2,833 +/- SE 82 kcal/day (isotonic), and 2,890 +/- SE 75 kcal/d (isokinetic) resulted in mean weight losses during bed rest of 1.01 kg, 0.85 kg, and 0.0 kg, respectively. The results indicated that: (1) The subjects maintained a relatively stable mood, high morale, and high esprit de corps throughout the study. Scores improved in nearly all performance and mood tests in almost all the subjects. Isotonic training, as opposed to isokinetic exercise training, was associated with decreasing levels of psychological tension, concentration, and motivation, and with improvement in the quality of sleep. (2) Peak oxygen uptake was maintained during bed rest with isotonic exercise training; it was not maintained as well with isokinetic ( -9.0%) or no-exercise ( -18.2%) training. If a 9% reduction in aerobic power is acceptable, isokinetic exercise training could be used for maintenance of strength, endurance, and the reduced aerobic capacity in astronauts during flight. (3) In general, there were few decreases in strength or endurance of arm or leg muscles during bed rest, in spite of reduction in size (atrophy) of some leg muscles. (4) There was no effect of isotonic or isokinetic exercise training on orthostasis, because tilt-table tolerances were reduced similarly from 42-53 min to 30-34 min in the three groups following bed rest. (5) Bed rest resulted in significant decreases of postural stability and self-selected step length, stride length, and walking velocity, which were not influenced by either exercise training regimen. Pre-bed-rest responses were restored by the fourth day of recovery.
Inactivity: Physiological Effects
Author: Harold SandlerPublisher: Elsevier
ISBN: 0323159869
Category : Medical
Languages : en
Pages : 222
Book Description
Inactivity: Physiological Effects describes the physiological deconditioning inherent in inactivity and immobilization. This book is organized into eight chapters that review the body of information from studies on healthy volunteers conducted in direct support of the space program. Considerable chapters are devoted to the changes occurring in the cardiovascular system, bone and muscle, metabolism and endocrine responses, psychosocial responses, and exercise tolerance. Other chapters discuss the clinical effects and clinical management of deterioration while indicating the changes that have been found in health, normal bed rested subjects. The remaining chapters explore the data on crews that have flown in since their physiological responses are qualitatively similar to those observed in bed rested subjects or immobilized patients on earth. Clinicians, nursing staff, physiologists, researchers, and students in the field will find this book invaluable.
Author: