Effect of increased load on scapular kinematics during manual wheelchair propulsion in individuals with paraplegia and tetraplegia. 2012

Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
Biomechanics Research Laboratory, Department of Kinesiology, PED 107, 3560 Watt Way, University Park Campus, University of Southern California, Los Angeles, CA 90089, United States. sraina@usc.edu

Repetitive loading of the upper extremity musculature during activities like wheelchair propulsion can lead to fatigue of surrounding musculature causing irregular segment kinematics. The goal of this study was to determine the effect of increase in load on the kinematics of the scapula in users with paraplegia and tetraplegia. Data were collected on 18 participants (11 with paraplegia and 7 with tetraplegia) using an electromagnetic motion tracking system (100Hz) and force sensing pushrim (200Hz). The participants propelled under no load and loaded conditions at their customary propulsion velocity. On average a 60N increase in force was elicited with the experimental protocol. Users with tetraplegia showed significant increases (p<.05) in the rate of change of scapular angles in the upward/downward rotation and the retraction/protraction direction under the loaded conditions, whereas users with paraplegia only showed difference in the retraction/protraction rotation direction. Overall both user populations moved towards position of increased downward rotation, anterior tilt and protraction with increase in load hence increasing the risk of impingement. This experiment adds depth to our understanding of dynamic scapular kinematics during wheelchair propulsion under different loading conditions and differences in scapular control between users with paraplegia and tetraplegia.

UI MeSH Term Description Entries
D008297 Male Males
D009043 Motor Activity Body movements of a human or an animal as a behavioral phenomenon. Activities, Motor,Activity, Motor,Motor Activities
D010264 Paraplegia Severe or complete loss of motor function in the lower extremities and lower portions of the trunk. This condition is most often associated with SPINAL CORD DISEASES, although BRAIN DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; NEUROMUSCULAR DISEASES; and MUSCULAR DISEASES may also cause bilateral leg weakness. Paralysis, Lower Extremities,Paraplegia, Spastic,Spastic Paraplegia,Paralysis, Legs,Paralysis, Lower Limbs,Paraplegia, Ataxic,Paraplegia, Cerebral,Paraplegia, Flaccid,Paraplegia, Spinal,Ataxic Paraplegia,Ataxic Paraplegias,Cerebral Paraplegia,Cerebral Paraplegias,Flaccid Paraplegia,Flaccid Paraplegias,Paraplegias,Paraplegias, Ataxic,Paraplegias, Cerebral,Paraplegias, Flaccid,Paraplegias, Spastic,Paraplegias, Spinal,Spastic Paraplegias,Spinal Paraplegia,Spinal Paraplegias
D011782 Quadriplegia Severe or complete loss of motor function in all four limbs which may result from BRAIN DISEASES; SPINAL CORD DISEASES; PERIPHERAL NERVOUS SYSTEM DISEASES; NEUROMUSCULAR DISEASES; or rarely MUSCULAR DISEASES. The locked-in syndrome is characterized by quadriplegia in combination with cranial muscle paralysis. Consciousness is spared and the only retained voluntary motor activity may be limited eye movements. This condition is usually caused by a lesion in the upper BRAIN STEM which injures the descending cortico-spinal and cortico-bulbar tracts. Quadriparesis,Spastic Quadriplegia,Tetraplegia,Flaccid Quadriplegia,Flaccid Tetraplegia,Paralysis, Spinal, Quadriplegic,Spastic Tetraplegia,Flaccid Quadriplegias,Flaccid Tetraplegias,Quadripareses,Quadriplegia, Flaccid,Quadriplegia, Spastic,Quadriplegias,Quadriplegias, Flaccid,Quadriplegias, Spastic,Spastic Quadriplegias,Spastic Tetraplegias,Tetraplegia, Flaccid,Tetraplegia, Spastic,Tetraplegias,Tetraplegias, Flaccid,Tetraplegias, Spastic
D002574 Cervical Vertebrae The first seven VERTEBRAE of the SPINAL COLUMN, which correspond to the VERTEBRAE of the NECK. Cervical Spine,Cervical Spines,Spine, Cervical,Vertebrae, Cervical
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D001696 Biomechanical Phenomena The properties, processes, and behavior of biological systems under the action of mechanical forces. Biomechanics,Kinematics,Biomechanic Phenomena,Mechanobiological Phenomena,Biomechanic,Biomechanic Phenomenas,Phenomena, Biomechanic,Phenomena, Biomechanical,Phenomena, Mechanobiological,Phenomenas, Biomechanic
D012399 Rotation Motion of an object in which either one or more points on a line are fixed. It is also the motion of a particle about a fixed point. (From McGraw-Hill Dictionary of Scientific and Technical Terms, 4th ed) Clinorotation,Clinorotations,Rotations
D012540 Scapula Also called the shoulder blade, it is a flat triangular bone, a pair of which form the back part of the shoulder girdle. Scapulae,Shoulder Blade,Shoulder Blades
D012785 Shoulder Joint The articulation between the head of the HUMERUS and the glenoid cavity of the SCAPULA. Glenohumeral Joint,Glenoid Labrum,Glenohumeral Joints,Joint, Glenohumeral,Joint, Shoulder,Joints, Glenohumeral,Joints, Shoulder,Labrum, Glenoid,Shoulder Joints

Related Publications

Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
January 2011, Disability and rehabilitation. Assistive technology,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
May 2018, Clinical biomechanics (Bristol, Avon),
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
May 2014, Disability and rehabilitation. Assistive technology,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
September 2020, The journal of spinal cord medicine,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
October 2017, Archives of physical medicine and rehabilitation,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
January 2015, Topics in spinal cord injury rehabilitation,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
March 2012, Journal of rehabilitation medicine,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
December 1991, Journal of electromyography and kinesiology : official journal of the International Society of Electrophysiological Kinesiology,
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
January 2005, Clinical biomechanics (Bristol, Avon),
Shashank Raina, and Jill L McNitt-Gray, and Sara Mulroy, and Philip S Requejo
March 2024, Archives of rehabilitation research and clinical translation,
Copied contents to your clipboard!