Transcription of Exercise testing: why, which and how to interpret
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Key points An Exercise test should be performed: ifthere is impaired Exercise tolerance; tofind out which system is limiting Exercise ;to establish which organ systems have anabnormal response during or after exer-cise; to investigate how much Exercise isappropriate/safe in a patient; and todetermine the response to treatment. Prediction of Exercise performance basedsolely on resting pulmonary function testsis inaccurate. The gold standard in Exercise testing isthe incremental Exercise test. Two types of ergometers can be selectedfor incremental Exercise testing: a tread-mill or a cycle ergometer. More musclemass is put to work using a treadmillwhen compared with cycling. Incremental Exercise testing and fieldtesting have complementary value in, forexample, pulmonary rehabilitation. Exercise laboratories should be encour-aged to test some healthy control sub-jects in the age span of interest to evalu-ate which normal values best suit theirlaboratory setting. Is Exercise testinguseful?
with respiratory disease [23] describes two equa-tions used as reference values for V’O2,max. The equation of Jones et al. [24] seems useful in clinical practice for cycle ergometry (table 1). Exercise laboratories should be encouraged to Figure 2 Exercise protocols for incremental exercise testing. Reproduced with permission from [20].
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