Effect of respiratory rate, respiratory depth, and open versus closed mouth breathing on sublingual temperature

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Abstract

The effect of open mouth breathing, tachypnea, and hyperpnea, either alone or in combination, on sublingual and tympanic membrane temperature in healthy adults was investigated. Seventy-eight subjects maintained randomly assigned breathing patterns for 15 minutes. Temperatures were monitored immediately prior to and for 5 minutes following the breathing protocol. The only statistically significant finding (p < .01) was a lower sublingual temperature with open mouth breathing. No significant changes in tympanic membrane temperature were seen.

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