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Number of falls across the head (HE and HD) and support-surface (SOT-2 and SOT-5) postural test conditions in 11 astronaut subjects during R+0, R+2, R+3, and R+7/8 sessions and in 11 control subjects during the R+0 session.
| Subjects | Test | HE | HD |
|---|---|---|---|
| Astronaut R+0 | SOT-2 | 0/22 | 0/22 |
| SOT-5 | 3/22 | 20/22 | |
| Astronaut R+2 | SOT-2 | 0/22 | 0/22 |
| SOT-5 | 0/22 | 5/22 | |
| Astronaut R+3 | SOT-2 | 0/22 | 0/22 |
| SOT-5 | 0/22 | 1/22 | |
| Astronaut R+7/8 | SOT-2 | 0/22 | 0/22 |
| SOT-5 | 0/22 | 1/22 | |
| Control | SOT-2 | 0/22 | 0/22 |
| SOT-5 | 0/22 | 2/22 | |
