Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise
Objective: Ballistocardiogram (BCG) features are of interest in wearable cardiovascular monitoring of cardiac performance. We assess feasibility of wrist acceleration BCG during exercise for estimating pulse transit time (PTT), enabling broader cardiovascular response studies during acute exercise a...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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Frontiers Media S.A.
2023-05-01
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| Series: | Frontiers in Physiology |
| Subjects: | |
| Online Access: | https://www.frontiersin.org/articles/10.3389/fphys.2023.1189732/full |
| _version_ | 1797829026197274624 |
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| author | Torjus L. Steffensen Filip E. Schjerven Hans M. Flade Hans M. Flade Idar Kirkeby-Garstad Idar Kirkeby-Garstad Emma Ingeström Fredrik S. Solberg Martin Steinert |
| author_facet | Torjus L. Steffensen Filip E. Schjerven Hans M. Flade Hans M. Flade Idar Kirkeby-Garstad Idar Kirkeby-Garstad Emma Ingeström Fredrik S. Solberg Martin Steinert |
| author_sort | Torjus L. Steffensen |
| collection | DOAJ |
| description | Objective: Ballistocardiogram (BCG) features are of interest in wearable cardiovascular monitoring of cardiac performance. We assess feasibility of wrist acceleration BCG during exercise for estimating pulse transit time (PTT), enabling broader cardiovascular response studies during acute exercise and improved monitoring in individuals at risk for cardiovascular disease (CVD). We also examine the relationship between PTT, blood pressure (BP), and stroke volume (SV) during exercise and posture interventions.Methods: 25 participants underwent a bike exercise protocol with four incremental workloads (0 W, 50 W, 100 W, and 150 W) in supine and semirecumbent postures. BCG, invasive radial artery BP, tonometry, photoplethysmography (PPG) and echocardiography were recorded. Ensemble averages of BCG signals determined aortic valve opening (AVO) timings, combined with peripheral pulse wave arrival times to calculate PTT. We tested for significance using Wilcoxon signed-rank test.Results: BCG was successfully recorded at the wrist during exercise. PTT exhibited a moderate negative correlation with systolic BP (ρSup = −0.65, ρSR = −0.57, ρAll = −0.54). PTT differences between supine and semirecumbent conditions were significant at 0 W and 50 W (p < 0.001), less at 100 W (p = 0.0135) and 150 W (p = 0.031). SBP and DBP were lower in semirecumbent posture (p < 0.01), while HR was slightly higher. Echocardiography confirmed association of BCG features with AVO and indicated a positive relationship between BCG amplitude and SV (ρ = 0.74).Significance: Wrist BCG may allow convenient PTT and possibly SV tracking during exercise, enabling studies of cardiovascular response to acute exercise and convenient monitoring of cardiovascular performance. |
| first_indexed | 2024-04-09T13:13:47Z |
| format | Article |
| id | doaj.art-b32f42eda00b4631b289d98782770c0d |
| institution | Directory Open Access Journal |
| issn | 1664-042X |
| language | English |
| last_indexed | 2024-04-09T13:13:47Z |
| publishDate | 2023-05-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Physiology |
| spelling | doaj.art-b32f42eda00b4631b289d98782770c0d2023-05-12T05:13:31ZengFrontiers Media S.A.Frontiers in Physiology1664-042X2023-05-011410.3389/fphys.2023.11897321189732Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exerciseTorjus L. Steffensen0Filip E. Schjerven1Hans M. Flade2Hans M. Flade3Idar Kirkeby-Garstad4Idar Kirkeby-Garstad5Emma Ingeström6Fredrik S. Solberg7Martin Steinert8Department of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Computer Science, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, NorwaySt. Olav’s University Hospital, Trondheim, NorwayDepartment of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, NorwaySt. Olav’s University Hospital, Trondheim, NorwayDepartment of Circulation and Medical Imaging, Norwegian University of Science and Technology, Trondheim, NorwayDepartment of Mechanical Engineering, Stanford University, Palo Alto, CA, United StatesDepartment of Mechanical Engineering, Norwegian University of Science and Technology, Trondheim, NorwayObjective: Ballistocardiogram (BCG) features are of interest in wearable cardiovascular monitoring of cardiac performance. We assess feasibility of wrist acceleration BCG during exercise for estimating pulse transit time (PTT), enabling broader cardiovascular response studies during acute exercise and improved monitoring in individuals at risk for cardiovascular disease (CVD). We also examine the relationship between PTT, blood pressure (BP), and stroke volume (SV) during exercise and posture interventions.Methods: 25 participants underwent a bike exercise protocol with four incremental workloads (0 W, 50 W, 100 W, and 150 W) in supine and semirecumbent postures. BCG, invasive radial artery BP, tonometry, photoplethysmography (PPG) and echocardiography were recorded. Ensemble averages of BCG signals determined aortic valve opening (AVO) timings, combined with peripheral pulse wave arrival times to calculate PTT. We tested for significance using Wilcoxon signed-rank test.Results: BCG was successfully recorded at the wrist during exercise. PTT exhibited a moderate negative correlation with systolic BP (ρSup = −0.65, ρSR = −0.57, ρAll = −0.54). PTT differences between supine and semirecumbent conditions were significant at 0 W and 50 W (p < 0.001), less at 100 W (p = 0.0135) and 150 W (p = 0.031). SBP and DBP were lower in semirecumbent posture (p < 0.01), while HR was slightly higher. Echocardiography confirmed association of BCG features with AVO and indicated a positive relationship between BCG amplitude and SV (ρ = 0.74).Significance: Wrist BCG may allow convenient PTT and possibly SV tracking during exercise, enabling studies of cardiovascular response to acute exercise and convenient monitoring of cardiovascular performance.https://www.frontiersin.org/articles/10.3389/fphys.2023.1189732/fullcardiovascular monitoringexercise physiologycardiovascular physiologyballistocardiographypostural effectswearable sensors |
| spellingShingle | Torjus L. Steffensen Filip E. Schjerven Hans M. Flade Hans M. Flade Idar Kirkeby-Garstad Idar Kirkeby-Garstad Emma Ingeström Fredrik S. Solberg Martin Steinert Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise Frontiers in Physiology cardiovascular monitoring exercise physiology cardiovascular physiology ballistocardiography postural effects wearable sensors |
| title | Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| title_full | Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| title_fullStr | Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| title_full_unstemmed | Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| title_short | Wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| title_sort | wrist ballistocardiography and invasively recorded blood pressure in healthy volunteers during reclining bike exercise |
| topic | cardiovascular monitoring exercise physiology cardiovascular physiology ballistocardiography postural effects wearable sensors |
| url | https://www.frontiersin.org/articles/10.3389/fphys.2023.1189732/full |
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