Results 191 to 200 of about 1,205 (217)

Study of Temperature Homeostasis in Real and Simulated Weightlessness

Human Physiology, 2002
The analysis of the temperature (T) reaction of the body of healthy humans was carried out using the results of investigations with the thermometry technique under antiorthostatic hypokinesia (ANOH) (38 males in the studies of 14- to 49-day duration, eight females, 120 days), isolation in a regenerated gas environment (six males, 90 to 135 days), suit ...
N G, Lakota, I M, Larina
openaire   +2 more sources

[Changes of learning and memory function under weightlessness or simulated weightlessness].

Hang tian yi xue yu yi xue gong cheng = Space medicine & medical engineering, 2002
The work efficiency of astronauts has an intimate connection with the brain function state during space flight. The research results of the learning and memory mechanism of the brain in recent years were introduced. The effects of weightlessness or simulated weightlessness on brain's learning, memory, focused attention and many other higher neural ...
D W, Wu, X Y, Shen
openaire   +1 more source

Plasma viscosity elevations with simulated weightlessness.

Aviation, space, and environmental medicine, 1986
Bed rest studies which simulate weightlessness have demonstrated marked changes in the state of hydration of subjects as well as decrements in aerobic capacity. These two phenomena may be linked through increases in blood viscosity which is altered by a loss of free water and which, in turn, influences blood flow needed for aerobic muscular work.
D G, Martin, V A, Convertino, D, Goldwater, E W, Ferguson, E B, Schoomaker   +4 more
openaire   +1 more source

Simulated weightlessness: effects of bioenergetic balance.

Aviation, space, and environmental medicine, 1980
As a prelude to a flight experiment, an attempt was made to separate energy requirements associated with gravity from all other metabolic needs. The biological effects of weightlessness were simulated by suspending animals in a harness so that antigravity muscles were not supporting the body.
J P, Jordan, H A, Sykes, J C, Crownover, C L, Schatte, J B, Simmons, D P, Jordan   +5 more
openaire   +1 more source

THU0423 Immobilization Simulating Weightlessness Affects Immunological Parameters

Annals of the Rheumatic Diseases, 2013
Background Exercise has a wide variety of beneficial health effects. It stimulates bone formation and maintains bone strength as well as decreases the risk of falls. Moreover, exercise at regular intervals is also assumed to positively affect immune functions. Conversely, in more than 50% of the astronauts during/after space flight and under simulated
P. Hoff, D.L. Belavý, D. Huscher, M. Hahne, A.K. Kuhlmey, P. Maschmeyer, G. Armbrecht, R. Fitzner, F.H. Perschel, T. Gaber, G.R. Burmester, R.H. Straub, D. Felsenberg, F. Buttgereit   +13 more
openaire   +1 more source

Urinary adrenaline and noradrenaline response to simulated weightless state

American Journal of Physiology-Legacy Content, 1964
Sixteen normal subjects were placed in a simulated weightless state, i.e., water immersion. After 6 hr of water immersion, urine samples were collected and bio-assayed for adrenaline and noradrenaline. The excretion of adrenaline was moderately increased ( P < 0.15 > 0.10), possibly related to the anxiety associated with the immersion.
M, GOODALL, M, MCCALLY, D E, GRAVELINE
openaire   +2 more sources

Leptin responses to physical inactivity induced by simulated weightlessness

American Journal of Physiology-Regulatory, Integrative and Comparative Physiology, 2000
Physical inactivity induced by head-down bed rest (HDBR) affects body composition (BC). Leptin is involved in BC regulation by acting on fuel homeostasis. We investigated whether leptin and counterregulatory hormone levels are affected by a 7-day HDBR. Fasting blood was sampled daily (0700) in males ( n = 8) and on alternating days in females ( n = 8)
S, Blanc, S, Normand, C, Pachiaudi, M, Duvareille, C, Gharib   +4 more
openaire   +2 more sources

Research advance in effects of weightlessness or simulated weightlessness on tumor cells.

Zhongguo yi xue ke xue yuan xue bao. Acta Academiae Medicinae Sinicae, 2014
Weightless environment is a rare phenomenon on the ground where the interactions among cells and internal cellular structures disappear or become weakened. Studies on the biological features and molecular expression of tumors cells in weightlessness condition may provide new clues to the tumor initiation, process, diagnosis, and therapy.
De, Chang, Ying-hua, Guo, Chang-ting, Liu   +2 more
openaire   +1 more source

Amino acid supplementation alters bone metabolism during simulated weightlessness

Journal of Applied Physiology, 2005
High-protein and acidogenic diets induce hypercalciuria. Foods or supplements with excess sulfur-containing amino acids increase endogenous sulfuric acid production and therefore have the potential to increase calcium excretion and alter bone metabolism.
S R, Zwart, J E, Davis-Street, D, Paddon-Jones, A A, Ferrando, R R, Wolfe, S M, Smith   +5 more
openaire   +2 more sources

Simulated weightlessness for the ontogenesis of the otolith organ

Die Naturwissenschaften, 1968
Abstract : The critical phase of the otolith-organ-ripening within the embryo was used in a simulation experiment by setting frog eggs (Rana temporaria) and toad eggs (Bufo bufo) near the center of a rotating system with a horizontal axis. The experiment speeds were 100 and 160 r.p.m.; the eggs and tadpoles were subjected to maximal centripetal forces ...
openaire   +2 more sources