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Dynamic shoulder dynamometry: a way to develop delay onset muscle soreness in shoulder muscles
Pascal Madeleine1, Hongling Nie, Lars Arendt-Nielsen
1Laboratory for Experimental Pain Research, Center for Sensory-Motor Interaction, Department of Health Science and Technology, Aalborg University, Fredrik Bajers Vej 7D-3, DK-9220 Aalborg, Denmark. pm@smi.auc.dk
Journal of Biomechanics
|November 8, 2005
Summary
A novel dynamic shoulder dynamometer applies controlled force for scapular elevation exercises. This system uniquely induces delayed onset muscle soreness, aiding future shoulder sensory-motor interaction studies.
Area of Science:
- Biomechanics
- Human Movement Science
- Exercise Physiology
Background:
- Shoulder joint complex biomechanics require precise measurement tools.
- Understanding muscle response to dynamic loading is crucial for rehabilitation and performance.
- Existing dynamometers may lack the capacity for controlled eccentric loading and specific range of motion targeting.
Purpose of the Study:
- To design and validate a dynamic shoulder dynamometer capable of applying controlled vertical downward force during scapular elevation.
- To assess the reliability of force and displacement measurements.
- To explore the potential of the dynamometer for inducing delayed onset muscle soreness (DOMS) and investigating sensory-motor interactions.
Main Methods:
- Development of a force-controlled dynamic shoulder dynamometer.
- Implementation of calibration procedures for force and displacement accuracy.
- Testing the system's capability for isometric and eccentric contractions.
- Utilizing the dynamometer to elicit DOMS in shoulder muscles.
Main Results:
- The dynamic shoulder dynamometer successfully applies controlled vertical downward force within a measured range of motion (scapular elevation).
- Calibration confirmed the reliability of force and displacement measurements.
- The system demonstrated the capacity to induce delayed onset muscle soreness in shoulder muscles during eccentric exercise, a novel application.
- The apparatus is validated for use in both isometric and eccentric conditions.
Conclusions:
- A reliable dynamic shoulder dynamometer for controlled force application during scapular elevation has been developed.
- This innovative device enables the induction of delayed onset muscle soreness, offering a new avenue for shoulder muscle research.
- The dynamometer is poised to facilitate future investigations into sensory-motor interactions within the shoulder region.