[Tolerance of +Gx-loads by females before and after a 120-day hypokinesia].
The goal of the work was to study female tolerance of g-loads before and after simulated weightlessness, and evaluate the effectiveness of countermeasures and anti-g means proposed for space flight. Centrifuge with a 7.25 m arm was used for 29 runs of 8 female subjects. The subjects were exposed to the transverse loads (+GX) at 8.2 g on a special regimen with the total run time of 9 min to simulate the ballistic descent from orbit in a SOYUZ-TM vehicle. Baseline tolerance of the females to transverse loads up to +8GX was good and satisfactory. Following 120 days of bed rest without the countermeasures or the anti-g suit g-tolerance was significantly lowered as evidenced by visual disorders in 67% of cases and exaggerated, if compared with the pre-hypokinesia levels, heart and respiration rates, i.e. 20% and 23.5%, respectively. The countermeasures and anti-g suit Centaur maintained g-tolerance at essentially the baseline level and precluded visual disorders. Results of the study speak in favor of the countermeasures and anti-g means used by the females in simulated long-duration weightlessness which can be recommended for the final phase of extended space mission.
Luk'ianiuk
V I
VI
State Scientific Center "Institute of Medico-Biological Problems", Russian Federation.
Kotovskaia
A R
AR
Koloteva
M I
MI
Vil'-Vil'iams
I F
IF
Gavrilova
L N
LN
Iarov
A S
AS
Kriutchenko
S G
SG
Kleev
V V
VV
Balakhonov
M N
MN
D000222:Adaptation, Physiological / Q000502:physiology*; D000328:Adult; D000337:Aerospace Medicine; D004562:Electrocardiography; D005260:Female; D005500:Follow-Up Studies; D006439:Hemodynamics; D006801:Humans; D018471:Hypergravity; D018476:Hypokinesia / Q000150:complications / Q000503:physiopathology*; D012123:Pulmonary Ventilation; D012016:Reference Values; D014786:Vision Disorders / Q000209:etiology / Q000503:physiopathology; D014796:Visual Perception; D014893:Weightlessness
Perenosimost' peregruzok napravleniia +Gx zhenshchinami do i posle 120-sutochnoi gipokinezii.