Occupational and Environmental Lung Diseases |

Comparison of Maximal Oxygen Uptake Calculated With Incremental Shuttle Walking Test and Cardiopulmonary Exercise Test in Patients With COPD FREE TO VIEW

Alev Gurgun, MD; Pervin Korkmaz Ekren, MD; Hale Karapolat, MD; Pelin Ozdemir, MD; Zehra Toreyin, MD; Sezai Tasbakan, MD; Ozen Kacmaz Basoglu, MD; Feza Bacakoglu, MD
Author and Funding Information

Ege University, İzmir, Turkey

Chest. 2014;146(4_MeetingAbstracts):681A. doi:10.1378/chest.1993549
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SESSION TITLE: Occupational/Environmental Lung Disease Posters

SESSION TYPE: Original Investigation Poster

PRESENTED ON: Wednesday, October 29, 2014 at 01:30 PM - 02:30 PM

PURPOSE: The purpose of this study was to compare maximal oxygen uptake (peakVO2) during cardiopulmonary exercise test (CPET) and calculated from incremental shuttle walking test (ISWT) in patients with chronic obstructive pulmonary disease (COPD).

METHODS: The data of the patients who completed 8 weeks outpatient pulmonary rehabilitation (PR) with stable COPD was evaluated retrospectively. CPET and ISWT were performed for evaluating exercise capacity before and after the program. PR was performed during 8 weeks. Breath-by-breath trechnique was used to measure peakVO2 during CPET. PeakVO2 from ISWT distance was calculated by the formula “4.19+ [0.025x ISWT distance]”. Borg scale was used for evaluating dyspne where as St. George’s Respiratory Questionnaire was used for estimating quality of life.

RESULTS: A total of 38 patients were included in the study (mean age 64.55±8.3 years). PeakVO2 at CPET was 15.91±5.07 ml/min/kg before PR and 17.27±5.25 ml/dk/kg after PR (p=0.001). The peakVO2 calculated by the formula was 11.58±3.22 ml/min/kg before PR and 13.36±3.16 ml/min/kg after PR(p<0.001). ISWT distance increased from 296.05±128.93 m to 367.11±129.09 m (p<0.001). These results revealed significant relationship between peakVO2 at CPET and calculated by ISWT distance. Moderate positive corelation (p=0.001, r= 0.50) was found before PR and weak corelation (p=0.005, r=0.449) was observed after PR. Dyspne and quality of life improved after PR. There were also significant but positive corelations between activity, impact, total score of SGRQ and peakVO2 at CPET before and after PR (p<0.05).

CONCLUSIONS: Incremetal shuttle walking test can is practical, easy and economic way of measuring exercise capacity which has moderate correlation with cardiopulmonary exercise test and therefore can be used as an alternative if there is no CPET.

CLINICAL IMPLICATIONS: Incremental shuttle walk test is an easy, cheap and practical way of measuring exercise capacity in patients with COPD.

DISCLOSURE: The following authors have nothing to disclose: Alev Gurgun, Pervin Korkmaz Ekren, Hale Karapolat, Pelin Ozdemir, Zehra Toreyin, Sezai Tasbakan, Ozen Kacmaz Basoglu, Feza Bacakoglu

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