Apparatus and methods for therapeutically treating bone fractures, osteopenia, osteoporosis, or other tissue conditions, postural instability, or other conditions, such as cystic fibrosis, Crohns disease and kidney and gall bladder stones. An oscillating platform apparatus supports a body to be treated. An oscillator is positioned within the platform apparatus and is configured to impart an oscillating force on the body. Two accelerometers are mounted to the platform apparatus for determining the acceleration and weight of the body. Once the weight of the body is determined, the amplitude of the frequency of the oscillating force and/or frequency of the oscillating force is adjusted to provide a desired therapeutic treatment to the patient. Information received from the two accelerometers is also used to determine the posture of the patient and the transmissibility of the mechanical vibration energy generated by the oscillating force through the body.
