The increases in tidal volume with helium/oxygen reported by Fink et al (2003), in a lung model, are interesting in this context and provide additional evidence for increased ventilation for the same ventilatory effort.
A case study in New York City indicated that the simplified models are useful screening tools for evaluating the energy implications of increasing ventilation rates, which can be desirable, for example, for enhancing workforce productivity in high performance buildings.
It also called for setting up 75 air quality monitoring stations in rural areas and established guidelines for building design, such as increasing ventilation.
During exposure, subjects conducted intermittent bicycle ergometer training for 15 minutes at intensities increasing ventilation to 20 l/min/m2 alternating with 15 minutes rest.
Simulations performed for different canyon aspect ratios show the key role played by the roof pitch in enhancing turbulence and in increasing ventilation, in particular for narrow canyons.
As the carotid bodies are a main driver of ventilation, a role in mediating bronchoconstriction appears counterintuitive, however this mechanism may be responsible for maintaining rigidity of airways during increased ventilation and cough, and/or minimizing dead-space ventilation44,45.
Interventions may involve difficult tradeoffs such as increased ventilation versus the need for energy efficiency.
To increase ventilation, respiratory exercises can be used for muscle training, noninvasive positive air pressure support and high tidal volumes in patients on mechanical ventilation [ 92].
If faster cooling is needed, use a portable ventilation fan to increase ventilation.
Moreover, it is now clear that smokers compensate for increased filter ventilation in "light" cigarettes by modifying their puffing behavior [Rickert and Robinson, 1981; Kabat, 2003; Benowitz et al., 2005; Hammond et al., 2005].
