Soyuz Landing Missions, NASA
"More injuries have been occurring on Soyuz landings than anticipated. Most injuries are minor in nature, but are unexpected due to the low energetics of the landing. This may be an indication that Soyuz landings are harder than previously thought, or that spaceflight deconditioning reduces human tolerance to impacts, or a combination of both. ... 37.5% of US crew members experienced an injury"