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Related Concept Videos

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The muscles surrounding the shoulder girdle, including the clavicle and scapula, primarily stabilize the scapula. This stable base allows other muscles to move the humerus effectively. Scapular movements often mirror those of the humerus and extend its range of motion. For instance, raising the arm above the head would not be feasible without simultaneous upward rotation of the scapula.
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The upper limb consists of the arm, forearm, wrist, and hand bones. The humerus is the single bone of the upper arm region. Proximally, it has a large, spherical, smooth head that articulates with the glenoid cavity of the scapula to form the glenohumeral or shoulder joint. The margin of the head is the anatomical neck, a residual epiphyseal plate. Laterally it extends to form bony projections called the greater tubercle and the lesser tubercle. Next to the tubercles is the surgical neck, a...
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The thorax muscles are central to the body's respiration and provide essential support and movement for the upper body. They are intricately designed to facilitate the complex breathing process while also contributing to the structural integrity and mobility of the chest and upper limbs.
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Measurement of Dynamic Scapular Kinematics Using an Acromion Marker Cluster to Minimize Skin Movement Artifact
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Shoulder function and scapular position in boxers.

Seth Lenetsky1, Matt Brughelli1, Nigel K Harris1

  • 1Sports Performance Research Institute New Zealand, Auckland University of Technology, AUT University, Private Bag 92006, Auckland 0627, New Zealand.

Physical Therapy in Sport : Official Journal of the Association of Chartered Physiotherapists in Sports Medicine
|August 5, 2015
PubMed
Summary
This summary is machine-generated.

Experienced boxers show increased scapular dyskinesis and dominant arm external rotation, indicating a higher risk of upper limb injuries compared to non-boxers.

Keywords:
BoxingCombat sportsScapular dyskinesisShoulder range of motion

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Area of Science:

  • Sports Medicine
  • Biomechanics
  • Orthopedics

Background:

  • Repetitive overhead movements in boxing can impact shoulder and scapular biomechanics.
  • Understanding these adaptations is crucial for injury prevention in athletes.

Purpose of the Study:

  • To compare shoulder strength, range of motion, and scapular position between experienced boxers and a control group.
  • To identify potential risk factors for upper limb injuries in boxers.

Main Methods:

  • Cross-sectional study involving 18 boxers (≥3 years experience) and 20 non-boxers.
  • Assessed isometric strength, passive range of motion (2D video), and scapular function (scoliometer, visual inspection).
  • Both dominant and non-dominant arms were evaluated.

Main Results:

  • Boxers exhibited significantly greater scapular dyskinesis (HR = 2.73 ×/÷ 3.37).
  • Increased external rotation was observed in the dominant arm of boxers (ES = 0.70 ± 0.68).

Conclusions:

  • Experienced boxers present biomechanical alterations associated with an elevated risk of upper limb injuries.
  • These findings highlight the need for targeted injury prevention strategies in boxing.