Passive Stiffness of the Lumber Torso in Flexion, Extension, Lateral Bending, and Axial Roatation

McGill, Stuart M.; Seguin, J.; Bennett, G. W.

doi:10.1097/00007632-199403001-00009

Cited by 156 publications

(125 citation statements)

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“…Our study also revealed a large variation in the bending stiffness values among the subjects. This observation was also consistent with the results of previous studies [13][14].…”

Section: Discussionsupporting

confidence: 94%

“…The bending stiffness values obtained in this study were similar to those reported in previous work [13][14]. However, we should note that previous work examined the stiffness of the spine when subjected to physiological loadings (flexion/extension, lateral bending and twisting) rather than posteroanterior mobilization.…”

Section: Discussionsupporting

confidence: 89%

“…Previous studies measured the bending stiffness of the vertebral column during flexion, extension, lateral bending, and twisting of the trunk [13][14]. These researchers found that wearing a belt, holding the breath, and receiving anesthesia would significantly change spinal stiffness.…”

Section: Introductionmentioning

confidence: 99%

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Bending stiffness of the lumbar spine subjected to posteroanterior manipulative force

Lee¹,

Tsung²,

Tong³

et al. 2005

JRRD

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Abstract-This study measured the bending stiffness of the spine when it is subjected to posteroanterior mobilization force. The lumbar spine was modeled as an initially curved beam column supported over the rib cage and the pelvis. Posteroanterior mobilization was assumed to be three-point bending of the beam. The mobilization force was measured by the mounting of a force plate onto the manipulation couch, where electromagnetic sensors measured the change in spinal curvature. The bending stiffness of the spine was derived from the force and curvature data. The technique developed in this study provided highly repeatable data. The theoretical analysis suggests that the pelvic rotation produced by mobilization may be used clinically to indicate the magnitude of the mobilization force. Future research may employ the present method to determine how back pain may affect the bending stiffness of the spine. The bending stiffness values reported in this study will be valuable to future modeling work.

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“…Our study also revealed a large variation in the bending stiffness values among the subjects. This observation was also consistent with the results of previous studies [13][14].…”

Section: Discussionsupporting

confidence: 94%

Section: Discussionsupporting

confidence: 89%

See 1 more Smart Citation

Bending stiffness of the lumbar spine subjected to posteroanterior manipulative force

Lee¹,

Tsung²,

Tong³

et al. 2005

JRRD

View full text Add to dashboard Cite

show abstract

“…(Beach et al 2005;McGill et al 1994;Parkinson et al 2004) Investigators also have examined posterior-anterior mobility and stiffness of individual lumbar spine segments in people with and people without LBP. (Keller et al 2000;Kulig et al 2007;Lee et al 1998) To our knowledge no investigator has examined passive tissue characteristics of the lumbar region during a physiological movement in people with and people without LBP.…”

Section: Introductionmentioning

confidence: 99%

Differences in symmetry of lumbar region passive tissue characteristics between people with and people without low back pain

Gombatto

Norton

Scholtes

et al. 2008

Clinical Biomechanics

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Background-Several investigators have suggested that passive tissue characteristics of the lumbar region may be altered in people with low back pain. Passive stiffness of the lumbar region has been examined during physiological movements in healthy individuals and intersegmental spine mobility and stiffness have been examined in people with and people without low back pain. However, no investigators have examined differences in passive tissue characteristics of the lumbar region during a physiological movement between people with and people without low back pain.

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“…As for reasons why changes were shown in the activation of the trunk muscles in the prone positions, Campbell and Green 28) indicated that the activity of the diaphragm during inspiration is large and is associated with an increase in IAP. Their conclusion is supported by the results of McGill et al 29) and Cholewiki et al 30) who demonstrated that increased IAP stiffened the spine.…”

Section: Discussionmentioning

confidence: 61%

Activation of Trunk Muscles during End-Inspiration of Abdominal Breathing: Comparison among Four Different Positions

Kim

2011

J Phys Ther Sci

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Abstract.[Purpose] The purpose of this study was to compare the activation of trunk muscles during end-inspiration of abdominal breathing among four different back exercise positions to investigate potential effects on the activation of trunk muscles.[Subjects] Sixty healthy male adults volunteered to participate in the study.[Methods] Each subject was instructed regarding abdominal breathing and the study procedure. While the maximal voluntary contraction and endinspiration of abdominal breathing of individual muscles were being performed, the activity of the muscles was measured using surface electromyography. The activity of the muscles while performing end-inspiration of abdominal breathing was normalized to the percentage of maximal voluntary contraction (% MVC).[Results] Right and left erector spinae and external oblique showed significant differences among the positions between before and after endinspiration of abdominal breathing(EIAB). The prone-on-elbows position demonstrated the greatest increase post-EIAB.[Conclusion] End-inspiration of abdominal breathing appears to be effective in the four different positions for activating the erector spinae and external oblique trunk muscles, but not rectus abdominis.

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Passive Stiffness of the Lumber Torso in Flexion, Extension, Lateral Bending, and Axial Roatation

Cited by 156 publications

References 0 publications

Bending stiffness of the lumbar spine subjected to posteroanterior manipulative force

Bending stiffness of the lumbar spine subjected to posteroanterior manipulative force

Differences in symmetry of lumbar region passive tissue characteristics between people with and people without low back pain

Activation of Trunk Muscles during End-Inspiration of Abdominal Breathing: Comparison among Four Different Positions

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