We also present some tentative evidence that the pattern of ƒ R and V T could provide some useful diagnostic information for a variety of clinical conditions. For the stressors reviewed, as the stress becomes extreme V ˙ E generally becomes increased more by ƒ R than V T. We consider moderating factors, including exercise, sex, intensity and duration of stimuli. Our aim being to consider if there is an overall differential control of ƒ R and V T that applies in a wide range of conditions. Where possible we also consider the potential mechanisms that underpin the responses identified, and propose mechanisms by which differences in ƒ R and V T are mediated. This review investigates the impact of stressors including: cold, heat, hypoxia, pain and panic on the contributions of ƒ R and V T to V ˙ E to see if they differ with different stressors. But, the same V ˙ E can be achieved by a wide variety of changes in the depth (tidal volume, V T) and number of breaths (respiratory frequency, ƒ R). This is predominantly reported as an increase in minute ventilation ( V ˙ E). Many stressors cause an increase in ventilation in humans.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |