Figure 3.

Daily mechanical loading was applied to the bed rest individuals with a 6-degree head-down tilt for 90 days during which no physical exercise was allowed. The low-magnitude, high-frequency stimulation was applied to the individuals while in a supine position using a vest and a bungee spring system, which loaded the individual horizontally to the vibration platform on mobile support positioned at the foot of the bed. The mechanical vibration was set at 0.3 g, 30 Hz and 10 min per day.