Shoulder joint and muscle characteristics in the recreational weight training population

  • Kolber M
  • Beekhuizen K
  • Cheng M
 et al. 
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Abstract

Shoulder disorders attributed to weight training are well documented in the literature; however, a paucity of evidence-based research exists to describe risk factors inherent to participation. Shoulder joint and muscle characteristics in the recreational weight training (RWT) population were investigated to determine specific risk-related adaptations that may occur from participation. Ninety participants, men between the ages of 19 and 47 (mean age 28.9), including 60 individuals who participated in upper-extremity RWT and 30 controls with no record of RWT participation, were recruited. Active range of motion (AROM), posterior shoulder tightness (PST), body weight-adjusted strength values, and agonist/antagonist strength ratios were compared between the RWT participants and the control group. Statistical analysis identified significant differences (p < 0.001) between the groups when analyzing shoulder mobility. The RWT participants had decreased mobility when compared with the control group for all AROM measurements except external rotation, which was greater. Strength ratios were significantly greater in the RWT group when compared with the control group (p

Author-supplied keywords

  • Muscle imbalance
  • Shoulder complex
  • Shoulder disorders
  • Weight lifting

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Authors

  • Morey J. Kolber

  • Kristina S. Beekhuizen

  • Ming Shun S. Cheng

  • Madeleine A. Hellman

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