A Tool to Evaluate Posterior Pelvic Tilt Movement: Pressure Biofeedback Unit

Abstract

Purpose: To investigate the validity of the use of pressure biofeedback unit (BBU) in posterior pelvic tilt (PPT) movement in showing the activation of abdominal muscles in patients with chronic non-specific low back pain Material and Methods: Fifty patients with chronic and non-specific low back pain were included in this cross-sectional study. Electromyographic activity obtained from the rectus abdominis, external oblique and erector spina muscles during PPT movement was compared with the BBU pressure score. Results: The BBU score correlated with the electromyographic activities of the rectus abdominis and external abdominal oblique muscles (r=0.85 p<0.001, r=0.80 p<0.001). Successful superficial electromyography recording rate in PPT movement was moderately correlated with successful BBU score (Phi:0.67). Electromyographic recordings showed that there was a significant increase activities of rectus abdominis and external oblique muscles during PPT movement (p<0.001), but no significant activities was observed in the erector spina muscle (p=0.08). Conclusion: BBU is a valid tool for evaluating the PPT movement of individuals with chronic non-specific low back pain.

Keywords

• Low back pain
• Pressure biofeedback unit
• Surface electromyography
• Exercise

Posterior Pelvik Tilt Hareketini Değerlendirmede Kullanılabilecek Bir Araç: Basınç Biofeedback Ünitesi

Abstract

Amaç: Kronik non-spesifik bel ağrılı hastalarda Posterior pelvik tilt (PPT) hareketi sırasında basınç biofeedback ünitesi (BBÜ) kullanımının abdominal kasların aktivasyonunu göstermede geçerliliğini araştırmaktır. Gereç ve Yöntem: Bu kesitsel çalışmaya kronik-non spesifik bel ağrılı 50 hasta dahil edildi. Katılımcılardan PPT hareketiyle rektus abdominis, eksternal oblik ve erektör spina kaslarından elde edilen elektromyografik aktiviteler BBÜ basınç skoruyla karşılaştırıldı. Bulgular: BBÜ skoru, rektus abdominis ve eksternal abdominal oblik kasların elektromyografik aktiviteleri ile iyi derecede korele bulundu. (r=0.85 p<0.001, r=0.80 p<0.001) PPT hareketinde yüzeyel elektromyografi kaydı başarı oranı, BBÜ skoru başarı oranı ile orta derecede korele bulundu.(Phi:0.67) Ayrıca elektromyografik kayıtlarda PPT hareketi ile rektus abdominis ve eksternal oblik kasların elektromyografik aktivitelerinde anlamlı derecede artış saptanırken (p<0.001), erektör spina kasında anlamlı sinyal artışı izlenmedi (p=0.08). Sonuç: BBÜ, kronik non-spesifik bel ağrılı bireylerin PPT hareketini değerlendirmede geçerli bir araçtır.

Keywords

• Bel ağrısı
• Basınç biofeedback ünitesi
• Yüzeyel elektromyografi
• Egzersiz

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