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Overuse injury is a frequent diagnosis in occupational medicine and athletics. Using an established model of upper extremity overuse, we sought to characterize changes occurring in the forepaws and forelimbs of mature female rats (14-18 months of age). Thirty-three rats underwent a 4-week shaping period, before performing a high-repetition low-force (HRLF) task for 12 weeks, with the results being compared to 32 mature controls.

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Article Synopsis
  • - Bone stress injuries (BSIs) are overuse injuries that occur when there's repetitive strain on bone, either from excessive physical activity on healthy bone or normal activity on already weakened bone, often seen in younger athletes and those with medical conditions affecting bone density.
  • - Stress fractures are a severe form of BSIs, representing about 20% of cases and show clear signs on imaging; untreated, they can lead to complete fractures, with the main symptoms being localized pain and tenderness in response to increased physical loads.
  • - Treatment involves early intervention, focusing on modifying risk factors like nutrition and activity; imaging such as X-rays and MRIs help confirm BSIs, with management approaches varying based on the injury's severity and location, necessitating specialist
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Article Synopsis
  • Small-sided games (SSGs) are widely used in youth soccer training due to their ability to improve multiple soccer skills at once, but they can also lead to mechanical stress injuries if not properly managed.
  • The review highlights that as young athletes grow, their muscles and tendons can struggle to handle loads, making them more susceptible to injuries from repeated activity.
  • It emphasizes the need for coaches to tailor training loads based on individual athlete readiness to prevent injuries, suggesting modifications like changing play areas and including goalkeepers in drills.
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Nonlinear guided elastic waves have attracted extensive attention owing to their high sensitivity to microstructural changes. However, based on the widely used second harmonics, third harmonics and static components, it is still difficult to locate the micro-defects. Perhaps the nonlinear mixing of guided waves can solve these problems since their modes, frequencies and propagation direction can be flexibly selected.

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Overuse Injury: The Result of Pathologically Altered Myofascial Force Transmission?

Exerc Sport Sci Rev

October 2019

Institute of Health and Biomedical Innovation, Queensland University of Technology, Brisbane, Queensland, Australia.

Overuse injuries are suggested to result from repetitive microdamage eliciting pain in the affected tissue. Therapy commonly focuses on the area of symptom localization; however, such approach may oversimplify the true etiopathology. This review hypothesizes that the development of some sports-related soft tissue disorders, such as plantar fasciitis or lumbago, is promoted by pathologically altered force transmission from anatomically connected structures.

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