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Cardiovascular adaptation to simulated microgravity and countermeasure efficacy assessed by ballistocardiography and seismocardiography.

ABSTRACT: Head-down bed rest (HDBR) reproduces the cardiovascular effects of microgravity. We tested the hypothesis that regular high-intensity physical exercise (JUMP) could prevent this cardiovascular deconditioning, which could be detected using seismocardiography (SCG) and ballistocardiography (BCG). 23 healthy males were exposed to 60-day HDBR: 12 in a physical exercise group (JUMP), the others in a control group (CTRL). SCG and BCG were measured during supine controlled breathing protocols. From the linear and rotational SCG/BCG signals, the integral of kinetic energy ([Formula: see text]) was computed on each dimension over the cardiac cycle. At the end of HDBR, BCG rotational [Formula: see text] and SCG transversal [Formula: see text] decreased similarly for all participants (-?40% and?-?44%, respectively, p?O2 max (R?=?0.44 and 0.47, respectively, p?

SUBMITTER: Rabineau J 

PROVIDER: S-EPMC7573608 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Cardiovascular adaptation to simulated microgravity and countermeasure efficacy assessed by ballistocardiography and seismocardiography.

Rabineau Jeremy J   Hossein Amin A   Landreani Federica F   Haut Benoit B   Mulder Edwin E   Luchitskaya Elena E   Tank Jens J   Caiani Enrico G EG   van de Borne Philippe P   Migeotte Pierre-François PF  

Scientific reports 20201019 1

Head-down bed rest (HDBR) reproduces the cardiovascular effects of microgravity. We tested the hypothesis that regular high-intensity physical exercise (JUMP) could prevent this cardiovascular deconditioning, which could be detected using seismocardiography (SCG) and ballistocardiography (BCG). 23 healthy males were exposed to 60-day HDBR: 12 in a physical exercise group (JUMP), the others in a control group (CTRL). SCG and BCG were measured during supine controlled breathing protocols. From the  ...[more]

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