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Correlation between Posterolateral Hip Strength and Lateral Functional Performance According to Gender in Healthy Young Adults

  • Journal of the Korean Society of Physical Medicine
  • Abbr : J Korean Soc Phys Med
  • 2026, 21(1), pp.129~137
  • Publisher : The Korean Society of Physical Medicine
  • Research Area : Medicine and Pharmacy > Physical Therapy > Other physical therapy
  • Received : November 23, 2025
  • Accepted : December 10, 2025
  • Published : February 28, 2026

Eun-Ho Lee 1,  Hyu-Bin Lee ORD ID 1,  Jin-Seop Kim ORD ID 1

1선문대학교

Accredited

ABSTRACT

PURPOSE: This study investigated the association between the posterolateral hip strength and lateral functional performance in healthy young adults and whether this relationship differs between sexes. METHODS: Forty-eight healthy adults (19 male, 29 female; 18–34 years) without a lower extremity pathology were included. The posterolateral hip strength of the dominant limb was assessed using the Hip Stability Isometric Test (HipSIT) with a handheld dynamometer, and the results were normalized to the body mass. The lateral functional performance was evaluated using the Side-Hop Test (SHT), recorded as the time to complete 10 lateral single-leg hops over 30 cm. Sex differences were analyzed, and sex-specific correlations between the HipSIT strength and SHT time were examined using the Spearman coefficients. RESULTS: Men showed significantly greater normalized HipSIT strength and faster SHT times than females (p < .05). In females, greater HipSIT strength was moderately associated with a shorter SHT completion time (rho ≈ – .451, p < .05). In men, no significant correlation was observed between the HipSIT strength and SHT time. CONCLUSION: The posterolateral hip strength is related to the lateral functional performance in healthy young females but not in men. These findings suggest that the posterolateral hip strength may play a relatively greater role in lateral functional tasks in females and support the clinical utility of incorporating HipSIT-based assessment and targeted posterolateral hip strengthening in the evaluation and training of young female populations

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