Application of the Modified Incremental Step Test for Pulmonary Rehabilitation

Abstract Objective A Modified Incremental Step Test (MIST) performed in the home may facilitate entirely home-based pulmonary rehabilitation programs. The aims of this study were to investigate reliability and responsiveness, utility MIST for exercise prescription people with stable chronic lung disease. Methods was undertaken at center random order, before after rehabilitation, 2 tests each time point. Reliability assessed using intraclass correlation coefficient. Responsiveness evaluated as effect size. minimal important difference appraised distribution anchor-based methods. In a substudy, physiological responses measured by portable metabolic system, followed constant step rate test 60% peak oxygen uptake (VO2peak), evaluate prescription. Results Forty-six participants recruited (29% eligible candidates). There excellent number steps recorded home- center-based settings (intraclass coefficient = 0.954, 95% CI 0.915–0.976). small-moderate size demonstrated following (0.34), detectable change 7 steps. All substudy achieved VO2peak steady state fourth minute, corresponding mean 37% (95% 29–44) final level. Conclusions is reliable responsive respiratory It provides new opportunities assess capacity, prescribe training, reassess program outcomes environments where established field walking are not feasible. Impact Pulmonary highly effective treatment that underutilized worldwide. Home-based improve access patients deliver equivalent clinical but limited availability robust can be used capacity training intensity. This tested clinimetric properties way an appropriate intensity,