RELATIONSHIP OF LOWER EXTREMITY MUSCLE STRENGTH, RANGE OF HIP MOTION AND SUBTALAR ANGLE WITH DYNAMIC BALANCE

Abstract

Purpose: To determine the relationship between lower extremity muscle strength, hip joint range of motion, and subtalar angle with dynamic balance in healthy individuals. Methods: Sixty-nine healthy and volunteer individuals (age=22.1±71.25 years;47 females, 22 males) were included in our study. Dynamic balances of the individuals were evaluated with the Y balance test (YBT), lower extremity muscle strengths were evaluated with a hand-held dynamometer, hip joint range of motions and subtalar angles were evaluated with a universal goniometer. Results: There was a positive significant correlation between lower extremity muscle strength, hip external rotation range of motions and, YBT (p<0.05). Stepwise multiple linear regression analysis showed that hamstring muscle strength was a significant and independent predictor of the dominant leg YBT composite score with 22% of the variance and the non-dominant leg YBT composite score with 32% of the variance. Conclusion: Hamstring muscle strength was found to be a predictor of dynamic balance in healthy individuals. Improvement of hamstring muscle strength bilaterally may also contribute to dynamic balance in healthy individuals.

Keywords

• hamstring muscles
• lower extremity
• muscle strenght
• postural balance

ALT EKSTREMİTE KAS KUVVETİ, KALÇA EKLEM HAREKET AÇIKLIĞI VE SUBTALAR AÇININ DİNAMİK DENGE İLE İLİŞKİSİ

Öz

Amaç: Sağlıklı bireylerde alt ekstremite kas kuvveti, kalça eklemi hareket açıklığı ve subtalar açının dinamik denge ile olan ilişkisini belirlemekti. Yöntem: Çalışmamıza 69 sağlıklı ve gönüllü birey (yaş=22,17±1,25 yıl; 47 kadın, 22 erkek) dahil edildi. Bireylerin dinamik dengeleri Y denge testi (YDT), alt ekstremite kas kuvvetleri el dinamometresi, kalça eklem hareket açıklıkları ve subtalar açıları ise universal gonyometre ile değerlendirildi. Sonuçlar: YDT ile alt ekstremite kas kuvvetleri ve kalça eksternal rotasyon hareket açıklıkları arasında pozitif anlamlı bir ilişki vardı (p<0,05). Kademeli çoklu doğrusal regresyon analizi, hamstring kas kuvvetinin, dominant bacak YDT kompozit skorunun %22 varyans, non-dominant bacak YDT kompozit skorunun %32 varyans ile anlamlı ve bağımsız belirleyicisi olduğunu gösterdi. Tartışma: Hamstring kas kuvveti, sağlıklı bireylerde dinamik dengenin bir belirleyicisi olarak bulundu. Hamstring kas kuvvetinin bilateral olarak geliştirilmesi sağlıklı bireylerde dinamik dengeye de katkı sağlayabilir.

Anahtar Kelimeler

• Alt ekstremite
• Hamstring kasları
• Kas kuvveti
• Postural denge

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