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Sighing Increases Flexibility of Breathing Systems
Scientists have found that sighing resets breathing patterns that are getting out of whack and keep our respiratory system flexible.
The study by researchers at the University of Leuven in Belgium involved rigging up eight men and 34 women with sensor-equipped shirts that record their breathing, heart rates and blood carbon dioxide levels over 20 minutes of quiet sitting.
What the scientists were looking for were specific changes over one-minute periods encompassing sighs that could confirm or contradict the 're-setter hypothesis' for the function of sighing.
"Our results show that the respiratory dynamics are different before and after a sigh. We hypothesize that a sigh acts as a general re-setter of the respiratory system," Discovery News quoted Elke Vlemincx and her co-authors as saying.
The re-setter hypothesis is based on the idea that breathing is an inherently dynamic and rather chaotic system, with all sorts of internal and external factors changing how much oxygen we need and keeping our lungs healthy and ready for action.
This sort of system requires a balance of meaningful signals and random noise to operate correctly.
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