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Functional Classification of Joints01:09

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Functional Classification of Joints
The functional classification of joints is determined by the amount of mobility between the adjacent bones. Joints are functionally classified as a synarthrosis or immobile joint, an amphiarthrosis or slightly moveable joint, or as a diarthrosis, a freely moveable joint. Fibrous and cartilaginous joints can be functionally classified as either synarthroses  or amphiarthroses, whereas all synovial joints are classified as diarthroses.
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Skeletal muscles continuously produce ATP to provide the energy that enables muscle contractions. Skeletal muscle fibers can be categorized into three types based on differences in their contraction speed and how they produce ATP, as well as physical differences related to these factors. Most human muscles contain all three muscle fiber types, albeit in varying proportions.
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Joints, also known as articulations, are classified based on their structural characteristics, i.e., based on whether the articulating surfaces of the adjacent bones are directly connected by fibrous connective tissue or cartilage, or whether the articulating surfaces contact each other within a fluid-filled joint cavity. These differences serve to divide the joints of the body into three structural classifications.
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Biomechanical Changes Related to Low Back Pain: An Innovative Tool for Movement Pattern Assessment and Treatment Evaluation in Rehabilitation
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Interrater reliability of a Pilates movement-based classification system.

Kwan Kenny Yu1, Evelyn Tulloch2, Paul Hendrick3

  • 1School of Physiotherapy, University of Otago, New Zealand; Queen's Rehabilitation Centre, Central, Hong Kong.

Journal of Bodywork and Movement Therapies
|January 22, 2015
PubMed
Summary

The Pilates Classification system shows excellent reliability for identifying movement patterns. Experienced raters with extensive training achieved near-perfect agreement, enhancing its clinical utility.

Keywords:
Movement classificationPilatesReliability

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Area of Science:

  • Movement science
  • Clinical biomechanics
  • Rehabilitation

Background:

  • The Pilates Classification system is used to analyze movement patterns.
  • Assessing the reliability of classification systems is crucial for clinical application.
  • Understanding movement patterns is key in physical therapy and rehabilitation.

Purpose of the Study:

  • To evaluate the interrater reliability of the DMA-CP (Duchenne Muscular Dystrophy-Clinical Pilates) classification system.
  • To determine if rater training and experience influence the reliability of movement pattern classification.

Main Methods:

  • Videos of 5 subjects performing specific Pilates movements were assessed.
  • Ninety-six raters trained in the DMA-CP system evaluated the videos.
  • Interrater reliability was measured using kappa statistics (Pi and K(free)).

Main Results:

  • Excellent interrater reliability was found for detecting directional bias (Pi = 0.92, K(free) = 0.89).
  • Moderate reliability was observed for classifying individuals into subgroups (Pi = 0.64, K(free) = 0.55).
  • Experienced raters (levels 1-4 DMA-CP training, daily use) showed excellent reliability (Pi = 0.89, K(free) = 0.87).

Conclusions:

  • The DMA-CP classification system demonstrates high reliability for movement pattern identification among experienced raters.
  • Increased rater training and experience correlate with improved classification reliability.
  • The system shows potential for consistent application in clinical settings for movement analysis.