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Spine Kinematics and Muscle Activiti...

Alameri, Mansoor Ahmed.

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Spine Kinematics and Muscle Activities in Non-Specific Chronic Low Back Pain Subgroups in Sitting.

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	Spine Kinematics and Muscle Activities in Non-Specific Chronic Low Back Pain Subgroups in Sitting./
作者:	Alameri, Mansoor Ahmed.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2019,
面頁冊數:	124 p.
附註:	Source: Dissertations Abstracts International, Volume: 81-11, Section: B.
Contained By:	Dissertations Abstracts International81-11B.
標題:	Physical therapy. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=27665205
ISBN:	9798643178149

Spine Kinematics and Muscle Activities in Non-Specific Chronic Low Back Pain Subgroups in Sitting.
Alameri, Mansoor Ahmed.

Spine Kinematics and Muscle Activities in Non-Specific Chronic Low Back Pain Subgroups in Sitting. - Ann Arbor : ProQuest Dissertations & Theses, 2019 - 124 p.

Source: Dissertations Abstracts International, Volume: 81-11, Section: B.

Thesis (Ph.D.)--Loma Linda University, 2019.

This item must not be sold to any third party vendors.

Background: Although, non-specific chronic low back pain (NSCLBP) has been associated with motor control impairments, little is known about the possible driving mechanisms of pain development overtime during prolonged sitting period. Therefore, the purpose of this study was to examine the differences in lumbosacral postures and muscle activities in adults with and without NSCLBP, and their role on pain development during a 1-hour of prolonged sitting task.Methods: Twenty NSCLBP subjects with motor control impairment (MCI) [10 classified as having flexion pattern (FP) disorder, and 10 with active extension pattern (AEP) disorder], and 10 healthy controls participated in the study. Subjects underwent a 1-hour sitting protocol on a standard office chair. Lumbosacral postures including sacral tilt (ST), third lumbar vertebrae (L3) position, and relative lower lumbar angle (RLLA) were recorded using a two-dimensional inclinometer. In addition, four trunk muscle activities including amplitudes and co-contractions were recorded using electromyography over the 1-hour period. Perceived back pain intensity was recorded using a numeric pain rating scale every 10 minutes throughout the sitting period.Results: All study groups presented with significantly distinctive lumbosacral kinematics at the lowest level of pain (the beginning of the sitting period) (p<0.05), as well as at the highest level of pain (the end of the sitting period) (p0.05). The MCI subgroups showed a significant deterioration in lumbosacral kinematics and pain levels overtime (p<0.01). The directions of deterioration in lumbosacral kinematics over the 1-hour sitting period occurred in the direction of the motor control impairment (kyphosis for FP subgroup or lordosis for the AEP subgroup). Both MCI subgroups reported a similarly significant increase in pain through mid-sitting (p<0.001). However, after mid-sitting, the AEP subgroup displayed a significantly reversed decrease in the lordotic postures (p=0.001) which was accompanied by much less increase in pain level compared to the FP subgroup. No significantly distinctive trunk muscles' activities were found at the beginning of sitting (p>0.05), nor did the muscle activities change overtime.Conclusion: The present study's findings suggest that MCI subgroups presented with distinctive underlying maladaptive postural patterns. However, the significant increase in pain over the 1-hour sitting might not be only attributed to the inherent maladaptive postures, also it may be related to the directional deterioration in lumbosacral postures overtime.

ISBN: 9798643178149Subjects--Topical Terms:

588713
Physical therapy.
Subjects--Index Terms:

Low back pain

Spine Kinematics and Muscle Activities in Non-Specific Chronic Low Back Pain Subgroups in Sitting.
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