The relationship between pulmonary functions and plantar pressure distributions ın patients with chronic obstructive pulmonary disease


Creative Commons License

Yıldız A., Öztürk O., Öztürk M., Demirbüken İ., Yıldırım E., Polat M. G.

1st International Congress on Physiotechnotherapy, Sarajevo, Bosna-Hersek, 9 - 13 Mayıs 2018

  • Yayın Türü: Bildiri / Özet Bildiri
  • Basıldığı Şehir: Sarajevo
  • Basıldığı Ülke: Bosna-Hersek
  • Marmara Üniversitesi Adresli: Evet

Özet

Abstract: Purpose: Chronic obstructive pulmonary disease (COPD) is associated with a limp, a shuffle or other walking abnormalities which are appeared parallel with COPD severity. One of the possible explanation of these reported disorders during walking could be related with poor peripheral muscle strength which is commonly seen in this population. It is not only led to disturb biomechanical aspects of normal walking, it may also alter plantar pressure distribution which is essential for proper co-contraction mechanisms of lower extremity muscles (1-3). However, the literature is lacking in this field and therefore we aimed to investigate whether severity of COPD was associated with altered plantar pressure distributions during walking. Methods: 18 individuals diagnosed with COPD (51-78 years old, mean age: 62.3±7.6) were recruited to the study. Severity of COPD classified with Global Initiative for Chronic Obstructive Lung Disease (GOLD) according to the value of expired volume in 1s (Forced Expiratory Volume in 1 s or FEV1). Stage 1 corresponds to FEV1≥80% of predicted; stage 2 50%≤FEV1<80% of predicted; stage 3 30% ≤FEV1 < 50% of predicted; stage 4 FEV1< 30% of predicted (4). Measurement of FEV1 performed using with spirometer according to ATS/ERS criteria. Plantar pressure parameters for both feet were assessed by using EMED pedobarography device (Novel, Munich, Germany). The subjects were asked to walk barefoot 5 times for each foot. Data was analysed by dividing into 3 zone; hindfoot, midfoot and forefoot. Maximum force (normalized to BW) and peak pressure were calculated. Spearman correlation test was performed for statistical analysis. Results: 2 patients were in stage 2 according to GOLD, 8 patients in stage 3 and 8 patients in stage 4. There was a good correlation between the FEV1 and maximum total foot force, maximum hindfoot force (rho: 0.531, p=0.023; rho: -0.480, p=0.44, respectively). However, there was no correlation between the FEV1 and other area force values, and peak pressure of foot. Conclusions: Our results showed that increase in severity of COPD cause to increase in maximum total force foot decrease in maximum hindfoot force. It may be related with walking style of patients such as limb or shuffle caused by severity of COPD. Next studies should be designed with more participant to determine whether there was a relationship between COPD stages