TY - JOUR T1 - Investigation of Relationship Between Lower Extremity Muscle Strength, Physical Activity and Endurance Capacity in Pulmonary Hypertension JF - European Respiratory Journal JO - Eur Respir J DO - 10.1183/13993003.congress-2021.PA788 VL - 58 IS - suppl 65 SP - PA788 AU - Özge Ertan AU - Goksen Kuran Aslan AU - Buket Akinci AU - Ahmet Kaya Bilge AU - Murat Inanc AU - Gulfer Okumus Y1 - 2021/09/05 UR - http://erj.ersjournals.com/content/58/suppl_65/PA788.abstract N2 - Background: Peripheral muscle strength and physical activity levels of patients with pulmonary hypertension (PH) are lower than healthy individuals. Decreased peripheral muscle strength can lead to fatigue and increased perception of exertion which may cause decreased endurance in patients with PH.Objective: This study aimed to determine the relationship between lower extremity muscle strength, physical activity level and endurance capacity in patients with PH.Methods: 27 patients (5 CTEPH, 22 IPH) who were diagnosed as PH included in the study. Quadriceps and iliopsoas muscle strengths were measured with a dynamometer. Physical activity was assessed with activity monitor and total energy consumption was recorded. Endurance capacity was determined by Endurance Shuttle Walking Test (ESWT). Before and after ESWT, dyspnea and leg fatigue symptoms were questioned with a modified Borg scale.Results: There were correlations found between quadriceps muscle strength and total energy consumption and, iliopsoas muscle strength and leg fatigue symptom (r=0.439, p=0.025, r=-0.385, p=0.047, respectively). No correlations were found between endurance capacity and lower extremity muscle strength and physical activity (p>0.05).Conclusion: In this study, it was found that the decrease in lower extremity muscle strength affected physical activity level and leg fatigue in PH. Relationship between lower extremity muscle strength, physical activity and endurance capacity should be evaluated with a larger sample size. In future studies, the effects of structured physical activity programs on lower extremity muscle strength and leg fatigue in PH may be investigated.FootnotesCite this article as: European Respiratory Journal 2021; 58: Suppl. 65, PA788.This abstract was presented at the 2021 ERS International Congress, in session “Prediction of exacerbations in patients with COPD”.This is an ERS International Congress abstract. No full-text version is available. Further material to accompany this abstract may be available at www.ers-education.org (ERS member access only). ER -