<Tr> <Th> FIF </Th> <Td> Forced inspiratory flow: (Specific measurement of the forced inspiratory curve is denoted by nomenclature analogous to that for the forced expiratory curve . For example, maximum inspiratory flow is denoted FIF . Unless otherwise specified, volume qualifiers indicate the volume inspired from RV at the point of measurement .) </Td> </Tr> <Tr> <Th> PEF </Th> <Td> Peak expiratory flow: The highest forced expiratory flow measured with a peak flow meter </Td> </Tr> <Tr> <Th> MVV </Th> <Td> Maximal voluntary ventilation: volume of air expired in a specified period during repetitive maximal effort </Td> </Tr> <Tr> <Td_colspan="2"> <Ul> <Li> </Li> <Li> </Li> <Li> </Li> </Ul> </Td> </Tr>

The volume of air in a persons lungs