The preliminary application of five repetition sit-to-stand test for evaluating lower limb function in the patients with chronic obstructive pulmonary disease

Abstract

Objective To determine the value of five repetition sit-to-stand test (FTSST) to evaluate lower limb function in the patients with chronic obstructive pulmonary disease (COPD). Methods Sixty-one patients with COPD were tested for FTSST, isokinetic testing muscle strength for lower limb, 6-minute walking test. The relationship between FTSST time and muscle strength, 6-minute walking test distance (6MWD) were analyzed. Results FTSST time was (7.86±2.21) s, extensor peak torque was (67.58±24.83) Nm, extensor relative peak torque was 0.95(0.46) Nm/kg, 6MWD was (444.05±112.53) m. FTSST time related to extensor peak torque, extensor relative peak torque, 6MWD and types of complication, correlation coefficient values were-0.303,-0.393,-0.428, F =2.813, P < 0.05. Multivariate linear regression analysis showed that when the dependent variable was FTSST time, the variables of the equation were 6MWD and types of complication. Conclusions FTSST can be used for the rapid evaluation of lower extremity function in patients with COPD. The lower limb function gets worse, the FTSST time will be longer. Nursing staff should pay more attention to the lower limb function of patients with COPD, along with complications, using FTSST to evaluate lower extremity function. Key words: Pulmonary disease, chronic obstructive; Lower extremity; Function; Five repetition sit-to-stand test