{"id":"https://openalex.org/W7225644607","doi":"https://doi.org/10.2196/94597","title":"Machine Learning\u2013Based Biomechanical and Clinical Assessment of the Five Times Chair Rise Test in Older Adults: Sensor-Based Functional Aging Study","display_name":"Machine Learning\u2013Based Biomechanical and Clinical Assessment of the Five Times Chair Rise Test in Older Adults: Sensor-Based Functional Aging Study","publication_year":2026,"publication_date":"2026-11-09","ids":{"openalex":"https://openalex.org/W7225644607","doi":"https://doi.org/10.2196/94597","pmid":"https://pubmed.ncbi.nlm.nih.gov/43002696"},"language":"en","primary_location":{"id":"doi:10.2196/94597","doi":"https://doi.org/10.2196/94597","is_oa":true,"landing_page_url":"https://doi.org/10.2196/94597","pdf_url":null,"source":{"id":"https://openalex.org/S4210211124","display_name":"JMIR Aging","issn_l":"2561-7605","issn":["2561-7605"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","medline","norway-1","poland-20","russia-white-list-2","vabb-shw"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JMIR Aging","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj","pubmed"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://doi.org/10.2196/94597","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5116497288","display_name":"Anna Schumacher","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Anna Schumacher","raw_affiliation_strings":["Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630"],"raw_orcid":"https://orcid.org/0000-0001-5228-4947","affiliations":[{"raw_affiliation_string":"Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630","institution_ids":["https://openalex.org/I129877168"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5066032201","display_name":"Ole Meyer","orcid":"https://orcid.org/0000-0002-9964-5591","observed_orcids":["https://orcid.org/0000-0002-9964-5591"]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]},{"id":"https://openalex.org/I202367325","display_name":"Oldenburger Institut f\u00fcr Informatik","ror":"https://ror.org/003sav189","country_code":"DE","type":"facility","lineage":["https://openalex.org/I129877168","https://openalex.org/I202367325"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Ole Meyer","raw_affiliation_strings":["Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630","OFFIS - Institute for Information Technology, Oldenburg, Lower Saxony, Germany"],"raw_orcid":"https://orcid.org/0000-0002-9964-5591","affiliations":[{"raw_affiliation_string":"Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630","institution_ids":["https://openalex.org/I129877168"]},{"raw_affiliation_string":"OFFIS - Institute for Information Technology, Oldenburg, Lower Saxony, Germany","institution_ids":["https://openalex.org/I202367325"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5078262105","display_name":"Vincent M. Quinten","orcid":"https://orcid.org/0000-0001-7770-9884","observed_orcids":["https://orcid.org/0000-0001-7770-9884"]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Vincent Quinten","raw_affiliation_strings":["Junior Research Group \"Nutrition and Physical Function in Older Adults\", School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Oldenburg, Lower Saxony, Germany"],"raw_orcid":"https://orcid.org/0000-0001-7770-9884","affiliations":[{"raw_affiliation_string":"Junior Research Group \"Nutrition and Physical Function in Older Adults\", School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Oldenburg, Lower Saxony, Germany","institution_ids":["https://openalex.org/I129877168"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060354161","display_name":"Andreas Hein","orcid":"https://orcid.org/0000-0001-8846-2282","observed_orcids":["https://orcid.org/0000-0001-8846-2282"]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Andreas Hein","raw_affiliation_strings":["Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630"],"raw_orcid":"https://orcid.org/0000-0001-8846-2282","affiliations":[{"raw_affiliation_string":"Assistance Systems and Medical Device Technology, School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Ammerl\u00e4nder Heerstra\u00dfe 140, Oldenburg, Lower Saxony, 26129, Germany, 49 4417984630","institution_ids":["https://openalex.org/I129877168"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5076076975","display_name":"Rebecca Diekmann","orcid":"https://orcid.org/0000-0001-9793-3832","observed_orcids":["https://orcid.org/0000-0001-9793-3832"]},"institutions":[{"id":"https://openalex.org/I129877168","display_name":"Carl von Ossietzky Universit\u00e4t Oldenburg","ror":"https://ror.org/033n9gh91","country_code":"DE","type":"education","lineage":["https://openalex.org/I129877168"]}],"countries":["DE"],"is_corresponding":false,"raw_author_name":"Rebecca Diekmann","raw_affiliation_strings":["Junior Research Group \"Nutrition and Physical Function in Older Adults\", School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Oldenburg, Lower Saxony, Germany"],"raw_orcid":"https://orcid.org/0000-0001-9793-3832","affiliations":[{"raw_affiliation_string":"Junior Research Group \"Nutrition and Physical Function in Older Adults\", School VI - Medicine and Health Sciences, Carl von Ossietzky Universit\u00e4t Oldenburg, Oldenburg, Lower Saxony, Germany","institution_ids":["https://openalex.org/I129877168"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":{"value":1605,"currency":"USD","value_usd":1605},"apc_paid":{"value":1605,"currency":"USD","value_usd":1605},"fwci":0.0,"has_fulltext":false,"cited_by_count":0,"citation_normalized_percentile":{"value":0.0,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":null,"biblio":{"volume":"9","issue":null,"first_page":"e94597","last_page":"e94597"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9452999830245972,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10114","display_name":"Balance, Gait, and Falls Prevention","score":0.9452999830245972,"subfield":{"id":"https://openalex.org/subfields/3612","display_name":"Physical Therapy, Sports Therapy and Rehabilitation"},"field":{"id":"https://openalex.org/fields/36","display_name":"Health Professions"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T11011","display_name":"Frailty in Older Adults","score":0.04670000076293945,"subfield":{"id":"https://openalex.org/subfields/2717","display_name":"Geriatrics and Gerontology"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},{"id":"https://openalex.org/T10444","display_name":"Context-Aware Activity Recognition Systems","score":0.0010999999940395355,"subfield":{"id":"https://openalex.org/subfields/1707","display_name":"Computer Vision and Pattern Recognition"},"field":{"id":"https://openalex.org/fields/17","display_name":"Computer Science"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/older-adults","display_name":"older adults","score":0.824999988079071},{"id":"https://openalex.org/keywords/functional-aging","display_name":"functional aging","score":0.6639999747276306},{"id":"https://openalex.org/keywords/movement-pattern-classification","display_name":"movement pattern classification","score":0.8840000033378601},{"id":"https://openalex.org/keywords/dynamic-time-warping","display_name":"dynamic time warping","score":0.925000011920929},{"id":"https://openalex.org/keywords/k-means-clustering","display_name":"K-means clustering","score":0.8169999718666077},{"id":"https://openalex.org/keywords/ground-reaction-force","display_name":"ground reaction force","score":0.8479999899864197},{"id":"https://openalex.org/keywords/force-plate","display_name":"force plate","score":0.6610000133514404},{"id":"https://openalex.org/keywords/depth-camera","display_name":"depth camera","score":0.8769999742507935},{"id":"https://openalex.org/keywords/functional-decline","display_name":"functional decline","score":0.7900000214576721},{"id":"https://openalex.org/keywords/lower-limb-function","display_name":"lower limb function","score":0.6840000152587891},{"id":"https://openalex.org/keywords/walking-speed","display_name":"walking speed","score":0.7200000286102295},{"id":"https://openalex.org/keywords/timed-up-and-go-test","display_name":"Timed Up and Go test","score":0.7160000205039978},{"id":"https://openalex.org/keywords/short-physical-performance-battery","display_name":"Short Physical Performance Battery","score":0.9160000085830688},{"id":"https://openalex.org/keywords/muscle-strength","display_name":"muscle strength","score":0.6259999871253967},{"id":"https://openalex.org/keywords/balance","display_name":"balance","score":0.527999997138977},{"id":"https://openalex.org/keywords/compensatory-strategies","display_name":"compensatory strategies","score":0.6039999723434448},{"id":"https://openalex.org/keywords/healthy-aging","display_name":"healthy aging","score":0.6470000147819519},{"id":"https://openalex.org/keywords/community-dwelling-elderly","display_name":"community-dwelling older adults","score":0.6389999985694885}],"concepts":[{"id":"https://openalex.org/C64635419","wikidata":"https://www.wikidata.org/wiki/Q5508837","display_name":"Functional movement","level":2,"score":0.8112000226974487},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.7383000254631042},{"id":"https://openalex.org/C88516994","wikidata":"https://www.wikidata.org/wiki/Q1268863","display_name":"Dynamic time warping","level":2,"score":0.5824000239372253},{"id":"https://openalex.org/C170700871","wikidata":"https://www.wikidata.org/wiki/Q193378","display_name":"Biomechanics","level":2,"score":0.5162000060081482},{"id":"https://openalex.org/C2780226923","wikidata":"https://www.wikidata.org/wiki/Q929848","display_name":"Movement (music)","level":2,"score":0.5108000040054321},{"id":"https://openalex.org/C2779106727","wikidata":"https://www.wikidata.org/wiki/Q22907079","display_name":"Movement assessment","level":3,"score":0.49470001459121704},{"id":"https://openalex.org/C80823478","wikidata":"https://www.wikidata.org/wiki/Q4493432","display_name":"Functional testing","level":3,"score":0.4742000102996826},{"id":"https://openalex.org/C2776048318","wikidata":"https://www.wikidata.org/wiki/Q7805516","display_name":"Timed Up and Go test","level":3,"score":0.46959999203681946},{"id":"https://openalex.org/C151800584","wikidata":"https://www.wikidata.org/wiki/Q2370000","display_name":"Gait","level":2,"score":0.44780001044273376},{"id":"https://openalex.org/C73555534","wikidata":"https://www.wikidata.org/wiki/Q622825","display_name":"Cluster analysis","level":2,"score":0.43939998745918274},{"id":"https://openalex.org/C168031717","wikidata":"https://www.wikidata.org/wiki/Q1530280","display_name":"Balance (ability)","level":2,"score":0.4187999963760376},{"id":"https://openalex.org/C2777267654","wikidata":"https://www.wikidata.org/wiki/Q3519023","display_name":"Test (biology)","level":2,"score":0.40389999747276306},{"id":"https://openalex.org/C51820054","wikidata":"https://www.wikidata.org/wiki/Q5508814","display_name":"Functional data analysis","level":2,"score":0.3928000032901764},{"id":"https://openalex.org/C173906292","wikidata":"https://www.wikidata.org/wiki/Q1493441","display_name":"Gait analysis","level":3,"score":0.36959999799728394},{"id":"https://openalex.org/C3018086343","wikidata":"https://www.wikidata.org/wiki/Q3540864","display_name":"Balance test","level":3,"score":0.3571999967098236},{"id":"https://openalex.org/C166151169","wikidata":"https://www.wikidata.org/wiki/Q16946937","display_name":"Dynamic balance","level":2,"score":0.34790000319480896},{"id":"https://openalex.org/C39920418","wikidata":"https://www.wikidata.org/wiki/Q11476","display_name":"Kinematics","level":2,"score":0.3314000070095062},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.32190001010894775},{"id":"https://openalex.org/C70770792","wikidata":"https://www.wikidata.org/wiki/Q7239848","display_name":"Preferred walking speed","level":2,"score":0.3212999999523163},{"id":"https://openalex.org/C206388871","wikidata":"https://www.wikidata.org/wiki/Q843994","display_name":"Stopwatch","level":2,"score":0.3158000111579895},{"id":"https://openalex.org/C2776214593","wikidata":"https://www.wikidata.org/wiki/Q1787939","display_name":"Sarcopenia","level":2,"score":0.3140999972820282},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.3050000071525574},{"id":"https://openalex.org/C15744967","wikidata":"https://www.wikidata.org/wiki/Q9418","display_name":"Psychology","level":0,"score":0.3028999865055084},{"id":"https://openalex.org/C96332660","wikidata":"https://www.wikidata.org/wiki/Q5610971","display_name":"Ground reaction force","level":3,"score":0.29829999804496765},{"id":"https://openalex.org/C2778818304","wikidata":"https://www.wikidata.org/wiki/Q1819478","display_name":"Rehabilitation","level":2,"score":0.2937999963760376},{"id":"https://openalex.org/C23131810","wikidata":"https://www.wikidata.org/wiki/Q818574","display_name":"Observational study","level":2,"score":0.29190000891685486},{"id":"https://openalex.org/C154945302","wikidata":"https://www.wikidata.org/wiki/Q11660","display_name":"Artificial intelligence","level":1,"score":0.28519999980926514},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.2831999957561493},{"id":"https://openalex.org/C164866538","wikidata":"https://www.wikidata.org/wiki/Q367351","display_name":"Cluster (spacecraft)","level":2,"score":0.27970001101493835},{"id":"https://openalex.org/C2777766275","wikidata":"https://www.wikidata.org/wiki/Q1327643","display_name":"Functional electrical stimulation","level":3,"score":0.2777999937534332},{"id":"https://openalex.org/C94124525","wikidata":"https://www.wikidata.org/wiki/Q912550","display_name":"Categorization","level":2,"score":0.2736999988555908},{"id":"https://openalex.org/C71176878","wikidata":"https://www.wikidata.org/wiki/Q17014987","display_name":"Functional principal component analysis","level":3,"score":0.26989999413490295},{"id":"https://openalex.org/C2777036941","wikidata":"https://www.wikidata.org/wiki/Q6917771","display_name":"Motion analysis","level":2,"score":0.26460000872612},{"id":"https://openalex.org/C2776319952","wikidata":"https://www.wikidata.org/wiki/Q2451755","display_name":"Stair climbing","level":2,"score":0.26249998807907104}],"mesh":[{"descriptor_ui":"D000069550","descriptor_name":"Machine Learning","qualifier_ui":null,"qualifier_name":null,"is_major_topic":true},{"descriptor_ui":"D000098430","descriptor_name":"Clustering Algorithms","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000369","descriptor_name":"Aged, 80 and over","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000375","descriptor_name":"Aging","qualifier_ui":"Q000502","qualifier_name":"physiology","is_major_topic":true},{"descriptor_ui":"D001696","descriptor_name":"Biomechanical Phenomena","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D005080","descriptor_name":"Exercise Test","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true},{"descriptor_ui":"D005260","descriptor_name":"Female","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D006801","descriptor_name":"Humans","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008137","descriptor_name":"Longitudinal Studies","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D008297","descriptor_name":"Male","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D015577","descriptor_name":"Geriatric Assessment","qualifier_ui":"Q000379","qualifier_name":"methods","is_major_topic":true}],"locations_count":2,"locations":[{"id":"doi:10.2196/94597","doi":"https://doi.org/10.2196/94597","is_oa":true,"landing_page_url":"https://doi.org/10.2196/94597","pdf_url":null,"source":{"id":"https://openalex.org/S4210211124","display_name":"JMIR Aging","issn_l":"2561-7605","issn":["2561-7605"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","medline","norway-1","poland-20","russia-white-list-2","vabb-shw"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JMIR Aging","raw_type":"journal-article"},{"id":"pmid:43002696","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/43002696","pdf_url":null,"source":{"id":"https://openalex.org/S4306525036","display_name":"PubMed","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/I1299303238","host_organization_name":"National Institutes of Health","host_organization_lineage":["https://openalex.org/I1299303238"],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JMIR aging","raw_type":"Journal Article"}],"best_oa_location":{"id":"doi:10.2196/94597","doi":"https://doi.org/10.2196/94597","is_oa":true,"landing_page_url":"https://doi.org/10.2196/94597","pdf_url":null,"source":{"id":"https://openalex.org/S4210211124","display_name":"JMIR Aging","issn_l":"2561-7605","issn":["2561-7605"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["cwts-core","doaj","dongbi-c","medline","norway-1","poland-20","russia-white-list-2","vabb-shw"],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"JMIR Aging","raw_type":"journal-article"},"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.9763000011444092,"id":"https://metadata.un.org/sdg/3"}],"study_designs":[{"display_name":"Observational Study","id":"https://openalex.org/study-designs/observational-study"}],"awards":[],"funders":[],"has_content":{"pdf":false,"grobid_xml":false},"content_urls":null,"referenced_works_count":19,"referenced_works":["https://openalex.org/W1900956557","https://openalex.org/W1986947391","https://openalex.org/W1987971958","https://openalex.org/W1994070656","https://openalex.org/W2030594499","https://openalex.org/W2051224630","https://openalex.org/W2119958965","https://openalex.org/W2125785969","https://openalex.org/W2164059021","https://openalex.org/W2611059976","https://openalex.org/W2921774312","https://openalex.org/W2956119142","https://openalex.org/W3022105835","https://openalex.org/W3032592468","https://openalex.org/W3143069573","https://openalex.org/W4292528167","https://openalex.org/W4294204352","https://openalex.org/W4399302667","https://openalex.org/W4408139150"],"related_works":["https://openalex.org/W4408139150","https://openalex.org/W3127071158","https://openalex.org/W4410815097","https://openalex.org/W3210190620","https://openalex.org/W6980753716","https://openalex.org/W7204400417","https://openalex.org/W2912290989","https://openalex.org/W2174420911","https://openalex.org/W4366602780","https://openalex.org/W4405220478"],"abstract_inverted_index":{"Abstract":[0],"Background":[1],"Maintaining":[2],"functional":[3,61,77,119,160,348,368],"ability":[4],"is":[5,17],"essential":[6],"for":[7,55,314],"healthy":[8],"aging.":[9],"The":[10,198],"Five":[11],"Times":[12],"Chair":[13],"Rise":[14],"Test":[15],"(5CRT)":[16],"widely":[18],"used":[19],"to":[20,75,90,105,126,209,220,225],"assess":[21],"lower-extremity":[22],"function,":[23],"yet":[24],"conventional":[25,137,372],"stopwatch":[26,335],"timing":[27,140,357,373],"provides":[28,132],"limited":[29],"insight":[30],"into":[31,379],"movement":[32,48,70,93,110,130,227,249,377],"quality":[33],"and":[34,50,58,72,79,112,118,124,166,195,206,215,260,270,277,296,328,350,391,395],"compensatory":[35],"strategies.":[36],"Sensor-based":[37],"biomechanics":[38],"combined":[39],"with":[40],"machine":[41],"learning":[42],"(ML)":[43],"enables":[44],"detailed":[45],"analysis":[46,237,361],"of":[47,60,67,115,362,388],"dynamics":[49],"supports":[51],"digital":[52,143,380],"health":[53,144,381],"approaches":[54],"early":[56,386],"detection":[57,387],"monitoring":[59,394],"decline.":[62],"However,":[63],"the":[64,235,315],"clinical":[65],"relevance":[66],"ML-based":[68,109,129,344,360],"5CRT":[69,92,139,321],"patterns":[71,94],"their":[73],"relationship":[74],"established":[76,97],"outcomes":[78],"aging":[80],"trajectories":[81],"remains":[82],"insufficiently":[83],"understood.":[84],"Objective":[85],"This":[86],"study":[87],"aimed":[88],"(1)":[89],"classify":[91],"using":[95,202],"an":[96],"dynamic":[98],"time":[99],"warping":[100],"(DTW)-based":[101],"clustering":[102,217,345],"workflow;":[103],"(2)":[104],"examine":[106],"associations":[107],"between":[108],"clusters":[111,250],"multidimensional":[113],"indicators":[114],"strength,":[116,287],"mobility,":[117,292],"performance":[120,259,366,369],"across":[121],"24":[122,167,307],"months;":[123],"(3)":[125],"evaluate":[127],"whether":[128],"classification":[131],"clinically":[133,351],"meaningful":[134,352],"differentiation":[135],"beyond":[136,371],"stopwatch-based":[138],"within":[141],"a":[142,203],"assessment":[145,382],"context.":[146],"Methods":[147],"In":[148],"this":[149],"longitudinal":[150,393],"observational":[151],"study,":[152],"community-dwelling":[153],"adults":[154],"aged":[155],"\u226570":[156],"years":[157],"completed":[158],"standardized":[159],"assessments":[161,199],"at":[162],"baseline,":[163,275],"6":[164],"months,":[165,168,308],"including":[169],"Handgrip":[170],"Strength,":[171],"Stair":[172],"Climb":[173],"Power":[174],"Test,":[175,180,194,320],"Timed":[176,316],"\u201cUp":[177,317],"&":[178,318],"Go\u201d":[179,319],"Short":[181,329],"Physical":[182,330],"Performance":[183,331],"Battery":[184,332],"(including":[185],"5CRT),":[186],"4-meter":[187],"Gait":[188],"Speed,":[189],"Balance":[190],"Testing,":[191],"6-minute":[192,325],"Walking":[193],"Countermovement":[196],"Jump.":[197],"were":[200,218,251,312],"recorded":[201],"force":[204,223],"plate":[205],"depth":[207],"camera":[208],"capture":[210],"biomechanical":[211,376],"time-series":[212],"data.":[213],"DTW":[214],"k-means":[216],"applied":[219],"ground":[221],"reaction":[222],"signals":[224],"identify":[226],"patterns.":[228],"Results":[229],"Among":[230],"172":[231],"participants":[232,339],"included":[233],"in":[234,399],"final":[236],"(mean":[238],"age":[239],"76.9,":[240],"SD":[241],"3.40":[242],"years;":[243],"96/172,":[244],"56%":[245],"female),":[246],"2":[247,266,302],"distinct":[248],"identified.":[252],"Cluster":[253],"1":[254,282],"demonstrated":[255],"faster":[256,291],"chair":[257,364],"rise":[258,365],"lower":[261],"stabilization":[262,272],"forces,":[263],"whereas":[264,343],"cluster":[265,281,301],"exhibited":[267],"slower":[268],"execution":[269],"increased":[271],"demands.":[273],"Across":[274],"6-month,":[276],"24-month":[278],"follow-up":[279],"assessments,":[280],"consistently":[283],"showed":[284],"higher":[285,293],"muscle":[286],"greater":[288],"leg":[289],"power,":[290],"gait":[294,323],"speed,":[295,324],"longer":[297],"walking":[298],"distance":[299],"than":[300],"(all":[303],"P":[304],"<.01).":[305],"At":[306],"large":[309],"between-cluster":[310],"differences":[311],"observed":[313],"duration,":[322],"walk":[326],"distance,":[327],"score.":[333],"Conventional":[334],"scoring":[336],"categorized":[337],"most":[338],"as":[340],"high":[341],"functioning,":[342],"revealed":[346],"substantial":[347],"heterogeneity":[349],"information":[353],"not":[354],"reflected":[355],"by":[356],"alone.":[358],"Conclusions":[359],"sensor-based":[363],"identifies":[367],"profiles":[370],"metrics.":[374],"Integrating":[375],"analytics":[378],"frameworks":[383],"may":[384],"improve":[385],"mobility":[389],"decline":[390],"support":[392],"personalized":[396],"intervention":[397],"planning":[398],"older":[400],"adults.":[401]},"counts_by_year":[],"updated_date":"2026-11-11T12:16:26.678958","created_date":"2026-11-10T00:00:00"}
