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A 200-m All-out Front-crawl Swim Modifies Competitive Swimmers' Shoulder Joint Position Sense.

A Uematsu1, Y Kurita2, K Inoue3

  • 1Department of Sport Sciences, Dokkyo Medical University, Shimotsuga-gun, Japan.

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Summary
This summary is machine-generated.

An intense 200-m swim trial impairs shoulder joint position sense in competitive swimmers. This effect increases errors in matching arm positions, impacting performance and potentially increasing injury risk.

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Area of Science:

  • Sports Medicine
  • Biomechanics
  • Human Physiology

Background:

  • Shoulder joint position sense is crucial for athletic performance.
  • Fatigue from intense swimming may affect proprioception.

Purpose of the Study:

  • To investigate the impact of an all-out 200-m front-crawl swim on shoulder joint position sense in competitive swimmers.
  • To determine if fatigue from maximal swimming effort alters proprioceptive accuracy.

Main Methods:

  • A position-matching paradigm using electromagnetic sensors measured shoulder joint position sense.
  • Participants performed an all-out 200-m front-crawl swim and a control rest condition.
  • Measurements were taken before and after each condition on separate days.

Main Results:

  • After the swim trial, shoulder joint position sense error increased by 4.4° at 180° abduction.
  • Variation in matching error was 2.2 times greater post-swim compared to the control condition.
  • The swim trial selectively impaired position sense in the horizontal arm position.

Conclusions:

  • An all-out 200-m front-crawl swim significantly degrades shoulder joint position sense in competitive swimmers.
  • Increased proprioceptive error and variability post-exercise may have implications for swimming technique and injury prevention.