Concentric and eccentric shoulder rehabilitation biomechanics

Sean Kohles, K. N. Gregorczyk, T. C. Phillips, L. T. Brody, J. F. Orwin, R. Vanderby

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The use of an impulse-momentum (IM) exercise technique was investigated for end-stage shoulder rehabilitation. The objectives of this study were to: (a) quantify the net shoulder joint forces and moments while using an IM system and (b) test the influence of gender and muscle loading type (concentric or eccentric) on kinetic and kinematic parameters. Fourteen healthy adults (eight males, six females) performed a repeated measures experiment on an instrumented device utilizing a cabled shuttle system. While maintaining 90° of shoulder abduction and 90° of elbow flexion, the subjects externally rotated their upper arm from 0° to 90° (concentric acceleration) and then internally rotated their upper arm back from 90° to the 0° position (eccentric deceleration). Shoulder joint forces and moments as well as rotational work and power were calculated using inverse dynamics (free-body forces and moments calculated at intersegmental joint centres). Overall concentric peak forces and moments were greater than eccentric peak forces and moments (P

Original languageEnglish (US)
Pages (from-to)237-249
Number of pages13
JournalProceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine
Volume221
Issue number3
DOIs
StatePublished - 2007

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Biomechanics
Patient rehabilitation
Momentum
Deceleration
Muscle
Kinematics
Kinetics
Experiments

Keywords

  • Concentric and eccentric muscle loading
  • Impulse-momentum exercise
  • Rehabilitation
  • Shoulder mechanics

ASJC Scopus subject areas

  • Biomedical Engineering
  • Mechanical Engineering

Cite this

Concentric and eccentric shoulder rehabilitation biomechanics. / Kohles, Sean; Gregorczyk, K. N.; Phillips, T. C.; Brody, L. T.; Orwin, J. F.; Vanderby, R.

In: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine, Vol. 221, No. 3, 2007, p. 237-249.

Research output: Contribution to journalArticle

Kohles, Sean ; Gregorczyk, K. N. ; Phillips, T. C. ; Brody, L. T. ; Orwin, J. F. ; Vanderby, R. / Concentric and eccentric shoulder rehabilitation biomechanics. In: Proceedings of the Institution of Mechanical Engineers, Part H: Journal of Engineering in Medicine. 2007 ; Vol. 221, No. 3. pp. 237-249.
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