scholarly journals Spinal Shrinkage Response to Shoulder Loading Posture

2018 ◽  
Vol 08 (04) ◽  
Author(s):  
Hongyu Sun ◽  
Xiangrong Cheng ◽  
Xinhai Shan
Keyword(s):  
Ergonomics ◽  
1987 ◽  
Vol 30 (2) ◽  
pp. 281-285 ◽  
Author(s):  
ELISABETH MELIN

Author(s):  
Clark R. Dickerson ◽  
Don B. Chaffin

Detailed characterization of differences in motions between injured and non-injured populations has not been widely studied. These motion differences may have an impact on physical loading of injured populations performing work tasks. This study included analysis of tasks performed by three populations: control, spinal cord injured, and low back pain. Shoulder loading was examined for goal-directed simulated sagittal and lateral plane work tasks through calculation of maximum external dynamic shoulder moments. The significant main effects in determining shoulder moments included: type of task performed (one or two-handed load movement), horizontal distance to target, vertical height of target, and population membership. There was also a significant interaction effect between population and task type. This study establishes that both task requirements and injury status quantitatively effect shoulder loading, particularly for lateral motions, and suggests that ergonomists should consider factors beyond task-defined characteristics when designing job interfaces for injured populations.


Ergonomics ◽  
2009 ◽  
Vol 52 (9) ◽  
pp. 1104-1118 ◽  
Author(s):  
G. S. Faber ◽  
I. Kingma ◽  
P. P.F.M. Kuijer ◽  
H. F. van der Molen ◽  
M. J.M. Hoozemans ◽  
...  
Keyword(s):  
Low Back ◽  

2018 ◽  
Vol 62 ◽  
pp. 17-21
Author(s):  
Richard Ballas ◽  
Nicolas Peyrot ◽  
Paul Allard ◽  
Teddy Caderby ◽  
Pascal Edouard ◽  
...  
Keyword(s):  

2009 ◽  
Vol 8 (2,3) ◽  
pp. 81-90 ◽  
Author(s):  
Annie J. McClellan ◽  
Wayne J. Albert ◽  
Steve L. Fischer ◽  
Fearon A. Seaman ◽  
Jack P. Callaghan

2008 ◽  
Vol 40 (Supplement) ◽  
pp. S211-S212
Author(s):  
Morris Levy ◽  
Megan E. Johnson ◽  
Marie N. Ulven ◽  
Bryce J. Bastolich
Keyword(s):  

2013 ◽  
Vol 29 (6) ◽  
pp. 712-720
Author(s):  
Gregory Neil Hodges ◽  
Dean Johannes Kriellaars

Despite the common use of elastic resistance in training, only the static loading characteristics have been studied, whereas the dynamic components remain undetermined. The purpose was to determine the effect of two movement strategies on the shoulder resultant joint moment (RJM) during internal/external rotation exercise with elastic load. Ten healthy subjects performed sweep and step movement strategies over a constant range of motion and cadence (1:1). Shoulder RJM was determined using a Newtonian model with elastic force measured by force transducer, joint angle by electrogoniometer, and limb acceleration by accelerometer. Relative to the sweep strategy, the step strategy revealed a 49% increase in angle-specific RJM during the initial phase, RJM was reduced to 67–69% during midrange, and increased to over 110% at the end of the repetition. These RJM differences were wholly attributable to strategy-dependent changes in limb acceleration. Shoulder RJM in the sweep strategy was almost entirely explained by moment of elastic force. Movement strategy can substantially alter shoulder loading despite constant range of motion and cadence, impacting the magnitude and nature of the stimulus for neuromuscular adaptation. These acceleration-dependent changes in shoulder RJM may be important to consider for exercise efficacy and safety.


1989 ◽  
Vol 61 (4) ◽  
pp. 229-233 ◽  
Author(s):  
T. Sihvonen ◽  
Karin Baskin ◽  
O. H�nninen
Keyword(s):  

2015 ◽  
Vol 21 (4) ◽  
pp. 313-324 ◽  
Author(s):  
Philip Santos Requejo ◽  
Sara J. Mulroy ◽  
Puja Ruparel ◽  
Patricia E. Hatchett ◽  
Lisa Lighthall Haubert ◽  
...  

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