Modeling the Recovery of the Sympathetic and Parasympathetic Modulation in Astronauts after Short and Long Duration Space Missions

The influence of microgravity on cardiovascular control was confirmed in this study. Therefore, linear HRV parameters were clustered in groups according to their physiological meaning. At early post flight, parts of the autonomic modulation of heart rate were significantly influenced, different for day and night periods, but the recovery was already complete 30 days after return.

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