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2001, Number 1

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Rev Inst Nal Enf Resp Mex 2001; 14 (1)

Variability in the 6 min Walking Test after eliminating the learning effect in patients with chronic obstructive pulmonary disease.

Velázquez MA, Sánchez RC, Ochoa CL, Sansores MRH, Ramírez-Venegas A

Language: Spanish
References: 12
Page: 12-15
PDF size: 152.09 Kb.


ABSTRACT

Objective: To determine the variability of the 6 min Walking Test after eliminating the learning effect in patients with severe Chronic Obstructive Pulmonary Disease. Patients and method: A study was performed on 11 male patients of the Chronic Obstructive Pulmonary Disease Clinic cohort of the National Institute of Respiratory Disease, with a mean age of 63±11 years and mean FEV1 42±22% of the expected value. The test was applied on five different days by the same observer. Results: Patients walked an average distance of 460±86m; 442±72m; 451±78m; 428±80m and 440±60m (1st, 2nd, 3rd, 4th and 5th day, respectively), (ANOVA 1.79, p = 0.15) with coefficient of variation 5%. There was a significant correlation between the distance walked and FEV1 (r=0.6, p‹0.05) on the first day. Conclusions: Results show that the test is reliable after eliminating the learning effect and correlation is good with functional tests. The simplicity and reliability of the 6 min Walking Test makes it a useful test to estimate exercise tolerance in Chronic Obstructive Pulmonary Disease patients.


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