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Predictors of exercise capacity in chronic venous disease patients

Objectives The aim of this study was to determine predictors of exercise capacity and explore the relationship between exercise capacity, lower extremity performance level, pain, fatigue, physical activity, sleep quality, and quality of life in patients with chronic venous disease. Methods A total of 170 chronic venous disease patients who were referred to the Cardiovascular Surgery department were included. Assessment tools included the six-minute walk test for exercise capacity, repeated sit-to-stand test for lower limb performance level, Visual Analog Scale for pain, Fatigue Severity Scale for fatigue, Pittsburgh Sleep Quality Index for sleep quality, International Physical Activity Questionnaire for physical activity, and Venous Insufficiency Epidemiological and Economic Study’s Quality of Life questionnaire for quality of life. Results Exercise capacity was weakly and negatively correlated with body mass index (r = –0.391, p < 0.001), pain level (r = –0.268, p < 0.001), age (r = –0.355, p < 0.001), and fatigue severity (r = –0.141, p < 0.05). There was a weak positive correlation in walking distance with quality of life (r = –0.129, p < 0.05) and education level (r = 0.166, p < 0.05), whereas moderate positive correlation was observed between walking distance and lower limb performance level (r = 0.518, p < 0.001). Lower limb performance level was a significant predictor of exercise capacity, accounting for 50% of the variance. Conclusions Exercise capacity is an important determinant of morbidity. Therefore, there is a need to improve lower extremity performance and functional mobility in patients suffering from chronic venous disease.