TY - JOUR T1 - Validity, responsiveness and minimum clinically important difference of the incremental shuttle walk in idiopathic pulmonary fibrosis: a prospective study JF - Thorax JO - Thorax SP - 680 LP - 682 DO - 10.1136/thoraxjnl-2017-210589 VL - 73 IS - 7 AU - Claire M Nolan AU - Veronica Delogu AU - Matthew Maddocks AU - Suhani Patel AU - Ruth E Barker AU - Sarah E Jones AU - Samantha S C Kon AU - Toby M Maher AU - Paul Cullinan AU - William D-C Man Y1 - 2018/07/01 UR - http://thorax.bmj.com/content/73/7/680.abstract N2 - The incremental shuttle walk (ISW) is well validated in COPD but limited psychometric data restrict its use in idiopathic pulmonary fibrosis (IPF). Study 1: 50 patients performed the ISW and 6 min walk test (6MWT). Study 2: 72 patients completed the ISW before and after pulmonary rehabilitation (PR). The ISW correlated strongly with 6MWT distance (r=0.81,p<0.0001). Mean (95% confidence interval) improvement in ISW with PR was 54 (38 to 70) m with an effect size of 0.29. Distribution-based and anchor-based minimum clinically important difference (MCID) estimates ranged from 31 to 46 m. The ISW is valid and responsive in IPF, with an anchor-based MCID estimate similar to that observed in chronic obstructive pulmonary disease.Trial registration number Pre-results; NCT02530736, NCT02436278. ER -