Abstract：
BACKGROUND:A sustained elevation in respiratory drive following removal of the inducing stimulus is known as respiratory long-term facilitation (rLTF). We investigated whether an acute exposure to intermittent negative airway pressure (INAP) elicits rLTF in humans. METHOD:13 healthy males (20.9 ± 2.8 years) undertook two trials (INAP and Control). In the INAP trial participants were exposed to one hour of 30-second episodes of breathing against negative pressure (-10 cmH2O) interspersed by 60-second intervals of breathing at atmospheric pressure. In the Control trial participants breathed at atmospheric pressure for one hour. Ventilation following INAP (recovery phase) was compared to that during baseline. RESULTS:Ventilation increased from baseline to recovery in the INAP trial (14.9 ± 0.9 vs 19.1 ± 0.7 L/min, P = 0.002). This increase was significantly greater than the equivalent during the Control trial (P = 0.019). Data shown as mean ± SEM. CONCLUSION:In this study INAP elicited rLTF in awake, healthy humans. Further research is required to investigate the responsible mechanisms.
journal_name
Respir Physiol Neurobioljournal_title
Respiratory physiology & neurobiologyauthors
Griffin HS,Al Humoud S,Benson JG,Cooper BG,Coomaraswamy K,Balanos GMdoi
10.1016/j.resp.2019.05.016subject
Has Abstractpub_date
2019-09-01 00:00:00pages
20-26eissn
1569-9048issn
1878-1519pii
S1569-9048(19)30014-Xjournal_volume
267pub_type
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