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Adaptations to Neck/Shoulder Fatigue and Injuries

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Progress in Motor Control

Part of the book series: Advances in Experimental Medicine and Biology ((AEMB,volume 826))

Abstract

Musculoskeletal disorders (MSDs) of the neck/shoulder region affect a large portion of the population, in particular, people who perform upper limb repetitive motions as part of their occupation. Although some risk factors have been identified, much remains unknown about the etiology of neck/shoulder MSD. The way that people move and use their muscles, especially when performing repetitive upper-limb tasks that can cause fatigue, has been suggested to be affected by injury but may also be implicated in the injury production mechanism. We address two concepts recently described in the motor control literature, variability and abundance, and relate each to neck/shoulder MSD, through a critical review of literature as well as new evidence. These concepts are introduced in relation to the Cinderella hypothesis framework, one of the most recognized pathomechanistic theories underlying the production of MSD. Documented sex differences in motor control and muscle use can also help understand neck/shoulder injury production. Lastly, variability and abundance are presented as two central components of a motor repertoire that can be manipulated to restore normal function after, or optimized to avoid the development of neck/shoulder MSDs.

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Acknowledgments

Research contributions from all past and current members of OBEL; funding from NSERC and CFI; J. Côté currently holds a CIHR-IRSST Gender, Work and Health Research Chair, and is a member of CRIR and REPAR.

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Correspondence to Julie N. Côté PhD .

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Côté, J. (2014). Adaptations to Neck/Shoulder Fatigue and Injuries. In: Levin, M. (eds) Progress in Motor Control. Advances in Experimental Medicine and Biology, vol 826. Springer, New York, NY. https://doi.org/10.1007/978-1-4939-1338-1_13

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