Lengthening but Not Shortening History of Paraspinal Muscle Spindles in the Low Back Alters Their 1 Dynamic Sensitivity 2 3 4 5 6 Conducted in a Facility Constructed with Support from Research Facilities Improvement Grant 38
نویسندگان
چکیده
Lengthening but not shortening history of paraspinal muscle spindles in the low back alters their 1 dynamic sensitivity 2 3 4 5 6 Dong-Yuan Cao and Joel G. Pickar* 7 8 9 Palmer Center for Chiropractic Research, Palmer College of Chiropractic,741 Brady Street, 10 Davenport, IA 52803,USA 11 12 13 14 15 16 17 18 19 20 21 * Corresponding author: 22 Dr. Joel G. Pickar 23 Palmer Center for Chiropractic Research 24 Palmer College of Chiropractic 25 741 Brady Street 26 Davenport, IA 52803 USA 27 Tel.: (563) 884-5219 28 Fax: (563) 884-5227 29 E-mail address: [email protected] 30 31 32 33 34 Acknowledgements 35
منابع مشابه
Lengthening but not shortening history of paraspinal muscle spindles in the low back alters their dynamic sensitivity.
Proprioception is considered important for maintaining spinal stability and for controlling posture and movement in the low back. Previous studies demonstrate the presence of thixotropic properties in lumbar muscle spindles, wherein a vertebra's positional history alters spindle responsiveness to position and movement. This study investigated whether a vertebra's movement history affects the ve...
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We determined whether spinal manipulation could prevent and/or reverse the decrease and increase in paraspinal muscle spindle responsiveness caused respectively by lengthening and shortening histories of the lumbar muscles. Single unit spindle activity from multifidus and longissimus muscles was recorded in the L6 dorsal root in anesthetized cats. Muscle history was created and spinal manipulat...
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Muscle spindles contribute to sensorimotor control by supplying feedback regarding muscle length and consequently information about joint position. While substantial study has been devoted to determining the position sensitivity of spindles in limb muscles, there appears to be no data on their sensitivity in the low back. We determined the relationship between lumbar paraspinal muscle spindle d...
متن کاملThe role of paraspinal muscle spindles in lumbosacral position sense in individuals with and without low back pain.
STUDY DESIGN A two-group experimental design with repeated measures on one factor was used. OBJECTIVES To investigate the role of paraspinal muscle spindles in lumbosacral position sense in individuals with and without low back pain. SUMMARY OF BACKGROUND DATA Proprioceptive deficits have been identified in patients with low back pain. The underlying mechanisms, however, are not well docume...
متن کاملPlane of vertebral movement eliciting muscle lengthening history in the low back influences the decrease in muscle spindle responsiveness of the cat.
Proprioceptive feedback is thought to play a significant role in controlling both lumbopelvic and intervertebral orientations. In the lumbar spine, a vertebra's positional history along the dorsal-ventral axis has been shown to alter the position, movement, and velocity sensitivity of muscle spindles in the multifidus and longissimus muscles. These effects appear due to muscle history. Because ...
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