Fig. 1: Flow diagram.
From: Bone marrow adiposity modulation after long duration spaceflight in astronauts
20 consecutive astronauts received an informed consent briefing; 5 declined to participate and 1 was not offered a mission. All 14 recruited astronauts, 11 male and 3 female astronauts, completed the study. 10/672 vertebrae yielded no measurable data leaving valid data for 662 vertebrae. 58/756 blood markers were not sampled or measured, leaving 698 blood markers for analysis. 51/294 urinary markers were not collected or measured leaving 243 urinary markers for analysis and 36/168 bone mineral density (BMD) measures were not carried out, leaving 132 BMD measures for analysis.
