Abstract：
:The purpose of this study was to compare simultaneous measurements of tidal volume (Vt) by optoelectronic plethysmography (OEP) and spirometry during a maximal cycling exercise test to quantify possible differences between methods. Vt measured simultaneously by OEP and spirometry was collected during a maximal exercise test in thirty healthy participants. The two methods were compared by linear regression and Bland-Altman analysis at submaximal and maximal exercise. The average difference between the two methods and the mean percentage discrepancy were calculated. Submaximal exercise (SM) and maximal exercise (M) Vt measured by OEP and spirometry had very good correlation, SM R=0.963 (p<0.001), M R=0.982 (p<0.001) and high degree of common variance, SM R(2)=0.928, M R(2)=0.983. Bland-Altman analysis demonstrated that during SM, OEP could measure exercise Vt as much as 0.134 L above and -0.025 L below that of spirometry. OEP could measure exercise Vt as much as 0.188 L above and -0.017 L below that of spirometry. The discrepancy between measurements was -2.0 ± 7.2% at SM and -2.4 ± 3.9% at M. In conclusion, Vt measurements at during exercise by OEP and spirometry are closely correlated and the difference between measurements was insignificant.
journal_name
Respir Physiol Neurobioljournal_title
Respiratory physiology & neurobiologyauthors
Layton AM,Moran SL,Garber CE,Armstrong HF,Basner RC,Thomashow BM,Bartels MNdoi
10.1016/j.resp.2012.09.004subject
Has Abstractpub_date
2013-01-15 00:00:00pages
362-8issue
2eissn
1569-9048issn
1878-1519pii
S1569-9048(12)00259-5journal_volume
185pub_type
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