When the ISS crew return on the Soyuz Rockets, they are obviously not able to walk due to being up there for 130+ days with no gravity...I was wondering how long it will take them to be able to work again
A two week mission results in 'several days' before being able to walk normally. After a six month mission it can take several weeks. It's not so much lack of muscle power, but the sense of balance is affected, resulting in dizzy spells, it seems.