:: I thought : static lung volumes don't change-so Total lung capacity, residual volume, functional residual capacity; dynamic lung volumes can change-so tidal volume, forced vital capacity, FEV 1.
12.
Where : Db = Density of the body, Ma = " Mass in air " ( i . e . dry weight ), Mw = " Mass in water " ( i . e . underwater weight ), Dw = Density of water ( based on water temperature ), RV = Residual volume ( the unfilled space enclosed by the body-e . g . volume of air in the lungs + respiratory passages after a maximum exhalation ).
