Abstract

Problems of adaptation of functional systems of the human body to conditions of continuous weightlessness are considered (prolonged stay under conditions of antiorthostatic hypokinesia and in an immersion medium). It was revealed that, during adaptation to these conditions, polymorphic clinicofunctional disorders develop, transforming into clinicophysiological syndromes, the most frequently observed being autonomic vascular malfunction, asthenoneurotic syndrome, detraining of the blood circulatory system, trophic and neuromuscular disorders, statokinetic syndrome, pain syndrome, and metabolic and hormonal disorders. The severity of the specified disorders and the duration of the recovery period depend on the duration of hypokinesia and the intensity and regularity of application of preventive measures during hypokinesia. The most probable pathophysiological mechanisms of adverse effects of continuous hypokinesia (maladaptation) on functional systems of the human body are described.

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