[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"health-study-detail:100618876":3},{"organization":4,"armGroups":7,"interventions":14,"overallOfficials":20,"centralContacts":25,"locations":30,"responsibleParty":46,"collaborators":19,"id":49,"slug":50,"hasResults":51,"nctId":52,"briefTitle":53,"officialTitle":54,"acronym":19,"eligibilityCriteria":55,"healthyVolunteers":56,"sex":57,"minAge":58,"maxAge":19,"enrollmentInfo":59,"targetDuration":19,"studyType":62,"phases":63,"briefSummary":65,"conditions":66,"keywords":69,"overallStatus":32,"whyStopped":19,"lastUpdateSubmitDate":72,"lastUpdatePostDateStruct":73,"startDateStruct":76,"completionDateStruct":78,"leadSponsor":80,"locationsCount":81},{"fullName":5,"class":6},"The University of Alabama in Huntsville","OTHER",[8],{"label":9,"type":10,"description":11,"interventionNames":12},"Intervention","EXPERIMENTAL","All participants will participate in the experimental arm, that involves a factorial model approach inwhich all participants will experience all eight conditions.",[13],"Other: Frequency of contrast marking on stair steps",[15],{"type":6,"name":16,"description":17,"armGroupLabels":18,"otherNames":19},"Frequency of contrast marking on stair steps","Frequency of contrast marking on stair steps will be evaluated to determine how foot clearance, perceptions in older adults with and without impaired contrast sensivity",[9],null,[21],{"name":22,"affiliation":23,"role":24},"Sara A Harper, PhD","University of Alabama in Huntsville","PRINCIPAL_INVESTIGATOR",[26],{"name":22,"role":27,"phone":28,"phoneExt":19,"email":29},"CONTACT","2568242184","sah0075@uah.edu",[31],{"facility":23,"status":32,"city":33,"state":34,"zip":35,"country":36,"countryCode":37,"cosmosGeoPoint":38,"geoPoint":43,"contacts":44},"RECRUITING","Huntsville","Alabama","35899","United States","US",{"type":39,"coordinates":40},"Point",[41,42],-86.58594,34.7304,{"lat":42,"lon":41},[45],{"name":22,"role":27,"phone":28,"phoneExt":19,"email":29},{"type":24,"investigatorFullName":47,"investigatorTitle":48,"investigatorAffiliation":5,"oldNameTitle":19,"oldOrganization":19},"Sara Harper","Assistant Professor","100618876","evaluating-stairway-designs-for-individuals-with-vision-impairment-100618876",false,"NCT07337317","Evaluating Stairway Designs for Individuals With Vision Impairment","Frequency of Contrast Enhancement on Stairways","Inclusion Criteria:\n\n1. ≥ Contrast sensitivity log 1.6 or greater\n2. travels independently in the community, including stairways \\> two times\u002Fweek\n3. comfortable ascending and descending a stairway with rest time provided\n\n   Exclusion Criteria:\n4. severe rheumatologic and or orthopedic diseases (e.g., awaiting joint replacement, active inflammatory disease)\n5. lower-limb injuries and\u002For recent joint replacements (e.g., hip fracture, hip, or knee replacement within six months of study enrollment)",true,"ALL","65 Years",{"count":60,"type":61},65,"ESTIMATED","INTERVENTIONAL",[64],"NA","The goal of this study is to learn if contrast frequency on step tread-edges influences foot clearance measures, a marker of fall risk, in older adults with and without visual impairments.\n\nThe main questions that aim to be answered are how foot clearance measures change across different frequencies of stair contrast, and how experiences and perceptions of different stair contrast frequencies are evaluated.\n\nResearchers will compare individuals with and without visual impairments to see if contrast frequency on step tread-edges changes.\n\nParticipants will attend one visit during which their vision will be measured, and they will be asked to ascend and descend laboratory stairs at different contrast frequencies.\n\nAn optional second visit will entail a focus group meeting to better understand how contrast affects mobility in their home and everyday life.",[67,68],"Vision, Low","Mobility Limitation",[70,71],"older adults","impaired contrast sensivity","2026-04-27",{"date":74,"type":75},"2026-05-01","ACTUAL",{"date":77,"type":75},"2026-01-22",{"date":79,"type":61},"2027-07",{"name":5,"class":6},1]