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R. S. Barrett on Muck Rack

R. S. Barrett

As seen in: Color Research & Application, Physiotherapy
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Articles

Physiotherapy

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By R. S. Barrett
| Physiotherapy Verified
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Regional three-dimensional deformation of human Achilles tendon during conditioning

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By L. Nuri, S. J. Obst, R. S. Barrett
| Color Research & Application Verified
Our understanding of in vivo Achilles tendon (AT) conditioning is limited to two-dimensional ultrasound measures of longitudinal deformation of the whole tendon. This study investigated the regional three-dimensional (3D) deformation of the AT during conditioning. Eighteen ATs were scanned using 3D freehand ultrasound during 10 successive 25 s submaximal (50%) voluntary isometric plantarflexion contractions.
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In vivo strain in the deep and superficial regions of the human patellar tendon

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By D. -H. Lee, R. S. Barrett, M. J. Ryan, S. J. Obst, D. J. Saxby
| Color Research & Application Verified
This study investigated strain differences within the patellar tendon (PT) mid-region using an ultrasound-based digital image correlation (DIC) method. Six healthy young participants performed six knee extensions to 60% of maximal voluntary isometric contraction on 2 days. Sagittal ultrasound videos recorded during each contraction were analyzed using the DIC method to determine the strain–torque relationships of the superficial, deep, and whole PT mid-regions.
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