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Article History

Accepted: 20 June 2022

First Online: 13 July 2022

Declarations

:

: This study was funded by the French Space Agency (CNES, French Space Agency) and the European Space agency which provided financial and operational supports for the Energy experiment.

: PB, AZ, DSA, IC, ELR, CT, AM, MG, GGK, AB, CS and SB declare that they have no potential conflicts of interest that might be relevant to the contents of this article.

: Data are accessible upon reasonable request to the authors after validations by space agencies.

: The study was approved yearly by the NASA Institutional Review Board under NASA 7116301606HR. The ESA Medical Board and the JAXA Institutional Review Board for human experiment also approved the experiment.

: The study was conducted in conformity with the policy statement regarding the use of human participants as outlined in the Declaration of Helsinki of 1964. All astronauts received a detailed presentation of the experiment before enrolling the study and signed a written informed consent.

: A global authorization from the European Space Agency was obtained to use and publish the photos (ESA copyright).

: SB, DAS, GGK and AM designed the study. PB, AB, CS and SB drafted the manuscript. AZ, CT, AM, GGK, CS and SB collected data. PB, ELR, AZ, DAS, IC, MG, AB, CS and SB analyzed the data. CS and PB realized the statistical analysis. All the authors read and approved the final version of the manuscript.