{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,8,4]],"date-time":"2026-08-04T03:03:49Z","timestamp":1785812629136,"version":"3.56.0"},"reference-count":31,"publisher":"Elsevier BV","license":[{"start":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T00:00:00Z","timestamp":1548979200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/tdm\/userlicense\/1.0\/"},{"start":{"date-parts":[[2019,2,1]],"date-time":"2019-02-01T00:00:00Z","timestamp":1548979200000},"content-version":"tdm","delay-in-days":0,"URL":"https:\/\/www.elsevier.com\/legal\/tdmrep-license"}],"funder":[{"name":"Omron healthcare Co., Ltd"},{"DOI":"10.13039\/501100001691","name":"Japan Society for the Promotion of Science","doi-asserted-by":"publisher","id":[{"id":"10.13039\/501100001691","id-type":"DOI","asserted-by":"publisher"}]},{"name":"JSPS KAKENHI"}],"content-domain":{"domain":["clinicalkey.com","clinicalkey.com.au","clinicalkey.es","clinicalkey.fr","clinicalkey.jp","elsevier.com","sciencedirect.com"],"crossmark-restriction":true},"short-container-title":["Gait & Posture"],"published-print":{"date-parts":[[2019,2]]},"DOI":"10.1016\/j.gaitpost.2018.12.014","type":"journal-article","created":{"date-parts":[[2018,12,10]],"date-time":"2018-12-10T14:20:30Z","timestamp":1544451630000},"page":"335-339","update-policy":"https:\/\/doi.org\/10.1016\/elsevier_cm_policy","source":"Crossref","is-referenced-by-count":18,"special_numbering":"C","title":["Concurrent validity and measurement error of stair climb test in people with pre-radiographic to mild knee osteoarthritis"],"prefix":"10.1016","volume":"68","author":[{"given":"Hirotaka","family":"Iijima","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kanako","family":"Shimoura","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2420-5847","authenticated-orcid":false,"given":"Ryo","family":"Eguchi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Tomoki","family":"Aoyama","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-8138-041X","authenticated-orcid":false,"given":"Masaki","family":"Takahashi","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"78","reference":[{"key":"10.1016\/j.gaitpost.2018.12.014_bib0005","doi-asserted-by":"crossref","first-page":"351","DOI":"10.2105\/AJPH.84.3.351","article-title":"The effects of specific medical conditions on the functional limitations of elders in the Framingham Study","volume":"84","author":"Guccione","year":"1994","journal-title":"Am. J. Public Health"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0010","doi-asserted-by":"crossref","first-page":"40","DOI":"10.1002\/acr.22418","article-title":"Toward a clinical definition of early osteoarthritis: onset of patient-reported knee pain begins on stairs. Data from the osteoarthritis initiative","volume":"67","author":"Hensor","year":"2015","journal-title":"Arthritis Care Res."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0015","doi-asserted-by":"crossref","first-page":"191","DOI":"10.1016\/j.gaitpost.2018.03.002","article-title":"Biomechanical characteristics of stair ambulation in patients with knee OA: a systematic review with meta-analysis toward a better definition of clinical hallmarks","volume":"62","author":"Iijima","year":"2018","journal-title":"Gait Posture"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0020","doi-asserted-by":"crossref","first-page":"749","DOI":"10.2106\/00004623-198062050-00008","article-title":"A study of lower-limb mechanics during stair-climbing","volume":"62","author":"Andriacchi","year":"1980","journal-title":"J. Bone Joint Surg. Am."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0025","doi-asserted-by":"crossref","first-page":"950","DOI":"10.1016\/S0268-0033(03)00179-7","article-title":"Frontal and sagittal plane analyses of the stair climbing task in healthy adults aged over 40 years: what are the challenges compared to level walking?","volume":"18","author":"Nadeau","year":"2003","journal-title":"Clin. Biomech. (Bristol, Avon)"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0030","doi-asserted-by":"crossref","first-page":"1042","DOI":"10.1016\/j.joca.2013.05.002","article-title":"OARSI recommended performance-based tests to assess physical function in people diagnosed with hip or knee osteoarthritis","volume":"21","author":"Dobson","year":"2013","journal-title":"Osteoarthr. Cartil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0035","doi-asserted-by":"crossref","first-page":"1792","DOI":"10.1016\/j.joca.2017.06.006","article-title":"Reliability and measurement error of the Osteoarthritis Research Society International (OARSI) recommended performance-based tests of physical function in people with hip and knee osteoarthritis","volume":"25","author":"Dobson","year":"2017","journal-title":"Osteoarthr. Cartil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0040","article-title":"The OARSI core set of performance-based measures for knee osteoarthritis is reliable but not valid and responsive","author":"Tolk","year":"2017","journal-title":"Knee Surg. Sports Traumatol. Arthrosc."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0045","doi-asserted-by":"crossref","first-page":"3","DOI":"10.1186\/1471-2474-6-3","article-title":"Assessing stability and change of four performance measures: a longitudinal study evaluating outcome following total hip and knee arthroplasty","volume":"6","author":"Kennedy","year":"2005","journal-title":"BMC Musculoskelet. Disord."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0050","doi-asserted-by":"crossref","first-page":"747","DOI":"10.1016\/j.joca.2015.03.005","article-title":"OARSI Clinical Trials Recommendations: Design, conduct, and reporting of clinical trials for knee osteoarthritis","volume":"23","author":"McAlindon","year":"2015","journal-title":"Osteoarthr. Cartil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0055","first-page":"254","article-title":"Agreement in gait speed from smartphone and stopwatch for five meter walk in laboratory and clinical environments","volume":"50","author":"Soangra","year":"2014","journal-title":"Biomed. Sci. Instrum."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0060","doi-asserted-by":"crossref","first-page":"179","DOI":"10.1007\/s40266-015-0243-3","article-title":"Can we identify patients with high risk of osteoarthritis progression who will respond to treatment? A focus on epidemiology and phenotype of osteoarthritis","volume":"32","author":"Bruyere","year":"2015","journal-title":"Drugs Aging"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0065","article-title":"Immediate effects of transcutaneous electrical nerve stimulation on pain and physical performance in individuals with pre-radiographic knee osteoarthritis: a randomized controlled trial","author":"Shimoura","year":"2018","journal-title":"Arch. Phys. Med. Rehabil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0070","first-page":"1524","article-title":"An outcome measure for Japanese people with knee osteoarthritis","volume":"32","author":"Akai","year":"2005","journal-title":"J. Rheumatol."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0075","doi-asserted-by":"crossref","first-page":"494","DOI":"10.1136\/ard.16.4.494","article-title":"Radiological assessment of osteo-arthrosis","volume":"16","author":"Kellgren","year":"1957","journal-title":"Ann. Rheum. Dis."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0080","doi-asserted-by":"crossref","first-page":"1274","DOI":"10.1016\/j.joca.2017.02.801","article-title":"Coexisting lateral tibiofemoral osteoarthritis is associated with worse knee pain in patients with mild medial osteoarthritis","volume":"25","author":"Iijima","year":"2017","journal-title":"Osteoarthr. Cartil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0085","doi-asserted-by":"crossref","DOI":"10.1016\/j.joca.2018.06.012","article-title":"Interaction between low back pain and knee pain contributes to disability level in individuals with knee osteoarthritis: a cross-sectional study","author":"Iijima","year":"2018","journal-title":"Osteoarthr. Cartil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0090","doi-asserted-by":"crossref","first-page":"463","DOI":"10.1016\/S0003-9993(97)90157-X","article-title":"Balance and vertical impact in sports: role of shoe sole materials","volume":"78","author":"Robbins","year":"1997","journal-title":"Arch. Phys. Med. Rehabil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0095","doi-asserted-by":"crossref","first-page":"17","DOI":"10.1093\/ptj\/80.1.17","article-title":"Effects of footwear on measurements of balance and gait in women between the ages of 65 and 93 years","volume":"80","author":"Arnadottir","year":"2000","journal-title":"Phys. Ther."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0100","doi-asserted-by":"crossref","first-page":"2861","DOI":"10.1109\/ASCC.2017.8287631","article-title":"Accessible ground reaction force estimation using insole force sensors without force plates","author":"Eguchi","year":"2017","journal-title":"Control Conference (ASCC), 2017 11th Asian"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0105","doi-asserted-by":"crossref","first-page":"322","DOI":"10.1016\/j.gaitpost.2009.11.014","article-title":"Real-time gait event detection for normal subjects from lower trunk accelerations","volume":"31","author":"Gonzalez","year":"2010","journal-title":"Gait Posture"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0110","doi-asserted-by":"crossref","first-page":"1","DOI":"10.1016\/S0966-6362(02)00190-X","article-title":"Assessment of spatio-temporal gait parameters from trunk accelerations during human walking","volume":"18","author":"Zijlstra","year":"2003","journal-title":"Gait Posture"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0115","doi-asserted-by":"crossref","first-page":"457","DOI":"10.3389\/fneur.2017.00457","article-title":"Validation of a step detection algorithm during straight walking and turning in patients with Parkinson\u2019s disease and older adults using an inertial measurement unit at the lower back","volume":"8","author":"Pham","year":"2017","journal-title":"Front. Neurol."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0120","first-page":"1125","article-title":"Estimation of traversed distance in level walking using a single inertial measurement unit attached to the waist","volume":"2011","author":"Kose","year":"2011","journal-title":"Conference Proceedings : Annual International Conference of the IEEE Engineering in Medicine and Biology Society IEEE Engineering in Medicine and Biology Society Annual Conference"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0125","doi-asserted-by":"crossref","first-page":"879","DOI":"10.1016\/S1350-4533(03)00116-4","article-title":"The use of accelerometry to detect heel contact events for use as a sensor in FES assisted walking","volume":"25","author":"Mansfield","year":"2003","journal-title":"Med. Eng. Phys."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0130","doi-asserted-by":"crossref","first-page":"42","DOI":"10.1016\/j.gaitpost.2016.08.012","article-title":"Gait event detection in laboratory and real life settings: accuracy of ankle and waist sensor based methods","volume":"50","author":"Storm","year":"2016","journal-title":"Gait Posture"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0135","doi-asserted-by":"crossref","first-page":"932","DOI":"10.1016\/j.apmr.2010.02.003","article-title":"Interrater reliability and validity of the stair ascend\/descend test in subjects with total knee arthroplasty","volume":"91","author":"Almeida","year":"2010","journal-title":"Arch. Phys. Med. Rehabil."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0140","doi-asserted-by":"crossref","first-page":"1033","DOI":"10.1016\/j.jclinepi.2005.10.015","article-title":"When to use agreement versus reliability measures","volume":"59","author":"de Vet","year":"2006","journal-title":"J. Clin. Epidemiol."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0145","doi-asserted-by":"crossref","first-page":"155","DOI":"10.1016\/j.jcm.2016.02.012","article-title":"A guideline of selecting and reporting intraclass correlation coefficients for reliability research","volume":"15","author":"Koo","year":"2016","journal-title":"J. Chiropr. Med."},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0150","doi-asserted-by":"crossref","first-page":"295","DOI":"10.1016\/j.knee.2017.01.007","article-title":"Kinematic alterations of the lower limbs and pelvis during an ascending stairs task are associated with the degree of knee osteoarthritis severity","volume":"24","author":"Goncalves","year":"2017","journal-title":"Knee"},{"key":"10.1016\/j.gaitpost.2018.12.014_bib0155","doi-asserted-by":"crossref","first-page":"621","DOI":"10.1016\/j.joca.2010.01.010","article-title":"Hip strengthening reduces symptoms but not knee load in people with medial knee osteoarthritis and varus malalignment: a randomised controlled trial","volume":"18","author":"Bennell","year":"2010","journal-title":"Osteoarthr. Cartil."}],"container-title":["Gait & Posture"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0966636218312918?httpAccept=text\/xml","content-type":"text\/xml","content-version":"vor","intended-application":"text-mining"},{"URL":"https:\/\/api.elsevier.com\/content\/article\/PII:S0966636218312918?httpAccept=text\/plain","content-type":"text\/plain","content-version":"vor","intended-application":"text-mining"}],"deposited":{"date-parts":[[2025,10,18]],"date-time":"2025-10-18T18:10:45Z","timestamp":1760811045000},"score":1,"resource":{"primary":{"URL":"https:\/\/linkinghub.elsevier.com\/retrieve\/pii\/S0966636218312918"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2019,2]]},"references-count":31,"alternative-id":["S0966636218312918"],"URL":"https:\/\/doi.org\/10.1016\/j.gaitpost.2018.12.014","relation":{},"ISSN":["0966-6362"],"issn-type":[{"value":"0966-6362","type":"print"}],"subject":[],"published":{"date-parts":[[2019,2]]},"assertion":[{"value":"Elsevier","name":"publisher","label":"This article is maintained by"},{"value":"Concurrent validity and measurement error of stair climb test in people with pre-radiographic to mild knee osteoarthritis","name":"articletitle","label":"Article Title"},{"value":"Gait & Posture","name":"journaltitle","label":"Journal Title"},{"value":"https:\/\/doi.org\/10.1016\/j.gaitpost.2018.12.014","name":"articlelink","label":"CrossRef DOI link to publisher maintained version"},{"value":"article","name":"content_type","label":"Content Type"},{"value":"\u00a9 2018 Elsevier B.V. All rights reserved.","name":"copyright","label":"Copyright"}]}}