Theoretically, one could measure food energy in different ways, using (say) the Gibbs free energy of combustion, or the amount of ATP generated by metabolizing the food. However, the convention is to use the heat of the oxidation reaction, with the water substance produced being in the liquid phase.
A specialized form of VRT is available to treat benign paroxysmal positional vertigo (BPPV). This treatment is often referred to as the Epley maneuver, and involves a series of specifically patterned head and trunk movements to move tiny displaced otoliths to a place in the inner ear where they canât cause symptoms.
Treatment of central positional vertigo, other than attempting to correct the cause, is not well worked out. Generally one attempts treatment with vestibular suppressants and centrally acting drugs. Vestibular rehab does not help central positional vertigo. Benign recurrent vertigo. This is an episodic positional vertigo syndrome, first described by Slater (1979), and also by Cha et al (2008). It is thought to be a migraine variant.