PMID- 23783372 OWN - NLM STAT- MEDLINE DCOM- 20131203 LR - 20220409 IS - 1468-3296 (Electronic) IS - 0040-6376 (Linking) VI - 68 IP - 11 DP - 2013 Nov TI - The five-repetition sit-to-stand test as a functional outcome measure in COPD. PG - 1015-20 LID - 10.1136/thoraxjnl-2013-203576 [doi] AB - BACKGROUND: Moving from sitting to standing is a common activity of daily living. The five-repetition sit-to-stand test (5STS) is a test of lower limb function that measures the fastest time taken to stand five times from a chair with arms folded. The 5STS has been validated in healthy community-dwelling adults, but data in chronic obstructive pulmonary disease (COPD) populations are lacking. AIMS: To determine the reliability, validity and responsiveness of the 5STS in patients with COPD. METHODS: Test-retest and interobserver reliability of the 5STS was measured in 50 patients with COPD. To address construct validity we collected data on the 5STS, exercise capacity (incremental shuttle walk (ISW)), lower limb strength (quadriceps maximum voluntary contraction (QMVC)), health status (St George's Respiratory Questionnaire (SGRQ)) and composite mortality indices (Age Dyspnoea Obstruction index (ADO), BODE index (iBODE)). Responsiveness was determined by measuring 5STS before and after outpatient pulmonary rehabilitation (PR) in 239 patients. Minimum clinically important difference (MCID) was estimated using anchor-based methods. RESULTS: Test-retest and interobserver intraclass correlation coefficients were 0.97 and 0.99, respectively. 5STS time correlated significantly with ISW, QMVC, SGRQ, ADO and iBODE (r=-0.59, -0.38, 0.35, 0.42 and 0.46, respectively; all p<0.001). Median (25th, 75th centiles) 5STS time decreased with PR (Pre: 14.1 (11.5, 21.3) vs Post: 12.4 (10.2, 16.3) s; p<0.001). Using different anchors, a conservative estimate for the MCID was 1.7 s. CONCLUSIONS: The 5STS is reliable, valid and responsive in patients with COPD with an estimated MCID of 1.7 s. It is a practical functional outcome measure suitable for use in most healthcare settings. FAU - Jones, Sarah E AU - Jones SE AD - NIHR Respiratory Biomedical Research Unit, Royal Brompton & Harefield NHS Foundation Trust and Imperial College, , Harefield, UK. FAU - Kon, Samantha S C AU - Kon SS FAU - Canavan, Jane L AU - Canavan JL FAU - Patel, Mehul S AU - Patel MS FAU - Clark, Amy L AU - Clark AL FAU - Nolan, Claire M AU - Nolan CM FAU - Polkey, Michael I AU - Polkey MI FAU - Man, William D-C AU - Man WD LA - eng GR - CTF-01-12-04/DH_/Department of Health/United Kingdom GR - DHCS/07/07/009/DH_/Department of Health/United Kingdom GR - G1002113/MRC_/Medical Research Council/United Kingdom PT - Comparative Study PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20130619 PL - England TA - Thorax JT - Thorax JID - 0417353 SB - IM MH - Aged MH - Cross-Sectional Studies MH - Exercise Test/*methods MH - Female MH - *Health Status MH - Humans MH - Male MH - Observer Variation MH - Posture/physiology MH - Pulmonary Disease, Chronic Obstructive/*physiopathology/rehabilitation MH - *Quality of Life MH - Reproducibility of Results MH - Surveys and Questionnaires MH - Walking/*physiology OTO - NOTNLM OT - COPD Pathology OT - Exercise OT - Pulmonary Rehabilitation EDAT- 2013/06/21 06:00 MHDA- 2013/12/16 06:00 CRDT- 2013/06/21 06:00 PHST- 2013/06/21 06:00 [entrez] PHST- 2013/06/21 06:00 [pubmed] PHST- 2013/12/16 06:00 [medline] AID - thoraxjnl-2013-203576 [pii] AID - 10.1136/thoraxjnl-2013-203576 [doi] PST - ppublish SO - Thorax. 2013 Nov;68(11):1015-20. doi: 10.1136/thoraxjnl-2013-203576. Epub 2013 Jun 19.