The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study

Abstract Background Abdominal bracing is a maneuver widely used by rehabilitation specialists and sports trainers to improve spinal stability. This study aimed to investigate how lifting tasks with and without abdominal bracing affect the respiratory function of the diaphragm. Methods M-mode ultraso...

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Main Authors: Martin Sembera, Andrew Busch, Alena Kobesova, Barbora Hanychova, Jan Sulc, Pavel Kolar
Format: Article
Language:English
Published: BMC 2023-09-01
Series:BMC Sports Science, Medicine and Rehabilitation
Subjects:
Online Access:https://doi.org/10.1186/s13102-023-00729-w
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author Martin Sembera
Andrew Busch
Alena Kobesova
Barbora Hanychova
Jan Sulc
Pavel Kolar
author_facet Martin Sembera
Andrew Busch
Alena Kobesova
Barbora Hanychova
Jan Sulc
Pavel Kolar
author_sort Martin Sembera
collection DOAJ
description Abstract Background Abdominal bracing is a maneuver widely used by rehabilitation specialists and sports trainers to improve spinal stability. This study aimed to investigate how lifting tasks with and without abdominal bracing affect the respiratory function of the diaphragm. Methods M-mode ultrasonographic assessment of diaphragmatic motion combined with spirometry was performed on 31 healthy adults. Participants were asked to breathe continuously whilst lifting a load with spontaneous abdominal muscle contraction (natural loaded breathing) and abdominal bracing (AB loaded breathing). Results Pearson’s correlations revealed strong correlations between ultrasonography and spirometry measures (p < 0.001) for all types of breathing: tidal breathing (r = 0.709, r 2  = 0.503), natural loaded breathing (r = 0.731, r 2  = 0.534) and AB loaded breathing (r = 0.795, r 2  = 0.632). Using paired-samples t-tests, the natural loaded breathing ultrasonography revealed more caudal diaphragm positions during inspiration (p < 0.001) but not during expiration (p = .101). Spirometry demonstrated lower lung volumes (L) at the end of inspiration and expiration (p < 0.001), with no changes in total lung volume (p = 0.06). The AB loaded breathing ultrasonography revealed more caudal diaphragm positions during inspiration (p = 0.002) but not during expiration (p = 0.05). Spirometry demonstrated lower lung volumes at the end of inspiration (p < 0.001), expiration (p = 0.002), and total lung volumes (p = 0.019). Conclusion This study demonstrated that abdominal bracing performed during a lifting task reduces lung volume despite an increase in diaphragmatic motion. Diaphragm excursions strongly correlate with lung volumes even under postural loading. Trial registration The study was prospectively registered on 8 April 2021 at ClinicalTrials.gov with identification number NCT04841109.
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spelling doaj.art-d4cad3877fe54defb57e7f56f52d0fc82023-11-20T10:30:54ZengBMCBMC Sports Science, Medicine and Rehabilitation2052-18472023-09-0115111010.1186/s13102-023-00729-wThe effect of abdominal bracing on respiration during a lifting task: a cross-sectional studyMartin Sembera0Andrew Busch1Alena Kobesova2Barbora Hanychova3Jan Sulc4Pavel Kolar5Department of Rehabilitation and Sports Medicine, Second Medical Faculty, Charles University and University Hospital MotolDepartment of Health and Human Kinetics, Ohio Wesleyan UniversityDepartment of Rehabilitation and Sports Medicine, Second Medical Faculty, Charles University and University Hospital MotolDepartment of Rehabilitation and Sports Medicine, Second Medical Faculty, Charles University and University Hospital MotolDepartment of Rehabilitation and Sports Medicine, Second Medical Faculty, Charles University and University Hospital MotolDepartment of Rehabilitation and Sports Medicine, Second Medical Faculty, Charles University and University Hospital MotolAbstract Background Abdominal bracing is a maneuver widely used by rehabilitation specialists and sports trainers to improve spinal stability. This study aimed to investigate how lifting tasks with and without abdominal bracing affect the respiratory function of the diaphragm. Methods M-mode ultrasonographic assessment of diaphragmatic motion combined with spirometry was performed on 31 healthy adults. Participants were asked to breathe continuously whilst lifting a load with spontaneous abdominal muscle contraction (natural loaded breathing) and abdominal bracing (AB loaded breathing). Results Pearson’s correlations revealed strong correlations between ultrasonography and spirometry measures (p < 0.001) for all types of breathing: tidal breathing (r = 0.709, r 2  = 0.503), natural loaded breathing (r = 0.731, r 2  = 0.534) and AB loaded breathing (r = 0.795, r 2  = 0.632). Using paired-samples t-tests, the natural loaded breathing ultrasonography revealed more caudal diaphragm positions during inspiration (p < 0.001) but not during expiration (p = .101). Spirometry demonstrated lower lung volumes (L) at the end of inspiration and expiration (p < 0.001), with no changes in total lung volume (p = 0.06). The AB loaded breathing ultrasonography revealed more caudal diaphragm positions during inspiration (p = 0.002) but not during expiration (p = 0.05). Spirometry demonstrated lower lung volumes at the end of inspiration (p < 0.001), expiration (p = 0.002), and total lung volumes (p = 0.019). Conclusion This study demonstrated that abdominal bracing performed during a lifting task reduces lung volume despite an increase in diaphragmatic motion. Diaphragm excursions strongly correlate with lung volumes even under postural loading. Trial registration The study was prospectively registered on 8 April 2021 at ClinicalTrials.gov with identification number NCT04841109.https://doi.org/10.1186/s13102-023-00729-wM-mode ultrasonographyDiaphragmBreathingAbdominal bracingSpinal stabilization
spellingShingle Martin Sembera
Andrew Busch
Alena Kobesova
Barbora Hanychova
Jan Sulc
Pavel Kolar
The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
BMC Sports Science, Medicine and Rehabilitation
M-mode ultrasonography
Diaphragm
Breathing
Abdominal bracing
Spinal stabilization
title The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
title_full The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
title_fullStr The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
title_full_unstemmed The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
title_short The effect of abdominal bracing on respiration during a lifting task: a cross-sectional study
title_sort effect of abdominal bracing on respiration during a lifting task a cross sectional study
topic M-mode ultrasonography
Diaphragm
Breathing
Abdominal bracing
Spinal stabilization
url https://doi.org/10.1186/s13102-023-00729-w
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