PMID- 15571640
OWN - NLM
STAT- MEDLINE
DCOM- 20050331
LR  - 20061115
IS  - 0020-1324 (Print)
IS  - 0020-1324 (Linking)
VI  - 49
IP  - 12
DP  - 2004 Dec
TI  - Comparison of different exercise tests in assessing outcomes of pulmonary 
      rehabilitation.
PG  - 1498-503
AB  - INTRODUCTION: Common modalities of clinical exercise testing for outcome 
      measurement after pulmonary rehabilitation (PR) include walk tests, progressive 
      cycle ergometry, and cycle endurance testing. We hypothesized that patients' 
      responses to PR, as measured by those 3 tests, are differentially correlated, and 
      we designed a study to investigate the tests' capacity to detect changes after 
      PR. METHODS: We prospectively tested 37 male patients with stable chronic 
      obstructive pulmonary disease who completed a comprehensive 6-week PR program 
      that included supervised exercise training that emphasized steady-state 
      lower-limb aerobic exercise. Before and after the PR program the patients 
      underwent 6-minute walk test, progressive cycle ergometry, and cycle endurance 
      testing (at 80% of the peak work rate achieved during progressive cycle 
      ergometry). The exercise performance indices of interest were the peak oxygen 
      uptake (VO2max) and maximum work-rate (Wmax) during progressive cycle ergometry, 
      the cycling endurance time, and the 6-minute walk distance (6MWD). RESULTS: After 
      PR there were statistically significant improvements in 6MWD (16%, p <0.001), 
      VO2max (53%, p=0.004), Wmax (30%, p=0.001), and cycling endurance time (144%, p 
      <0.001). The changes in VO2max and Wmax were significantly correlated (r=0.362, 
      p=0.027), as were the changes in endurance time and Wmax (r=0.406, p=0.013). 
      There was no significant correlation between changes in any other exercise index. 
      CONCLUSIONS: Among the frequently used exercise tests in PR, the most responsive 
      index is the endurance time. The correlation between the post-PR changes in the 
      various exercise indices is poor.
FAU - Ong, Kian-Chung
AU  - Ong KC
AD  - Department of Respiratory Medicine, Tan Tock Seng Hospital, 11 Jalan Tan Tock 
      Seng, Singapore 308433. kian_chung_ong@ttsh.com.sg
FAU - Chong, Wai-Fung
AU  - Chong WF
FAU - Soh, Cindy
AU  - Soh C
FAU - Earnest, Arul
AU  - Earnest A
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - United States
TA  - Respir Care
JT  - Respiratory care
JID - 7510357
SB  - IM
MH  - Aged
MH  - Bicycling/physiology
MH  - Ergometry
MH  - *Exercise Test/statistics & numerical data
MH  - Exercise Therapy
MH  - Humans
MH  - Male
MH  - Middle Aged
MH  - *Physical Endurance
MH  - Pulmonary Disease, Chronic Obstructive/physiopathology/*rehabilitation
MH  - Spirometry
MH  - Time Factors
MH  - Walking/physiology
EDAT- 2004/12/02 09:00
MHDA- 2005/04/01 09:00
CRDT- 2004/12/02 09:00
PHST- 2004/12/02 09:00 [pubmed]
PHST- 2005/04/01 09:00 [medline]
PHST- 2004/12/02 09:00 [entrez]
PST - ppublish
SO  - Respir Care. 2004 Dec;49(12):1498-503.