{"doi":"10.1111/jgs.16524","title":"Identification of Sarcopenia Components That Discriminate Slow Walking Speed: A Pooled Data Analysis","abstract":"BACKGROUND: The Sarcopenia Definitions and Outcomes Consortium (SDOC) sought to identify cut points for muscle strength and body composition measures derived from dual-energy x-ray absorptiometry (DXA) that discriminate older adults with slow walking speed. This article presents the core analyses used to guide the SDOC position statements. DESIGN: Cross-sectional data analyses of pooled data. SETTING: University-based research assessment centers. PARTICIPANTS: Community-dwelling men (n = 13,652) and women: (n = 5,115) with information on lean mass by DXA, grip strength (GR), and walking speed. MEASUREMENTS: Thirty-five candidate sarcopenia variables were entered into sex-stratified classification and regression tree (CART) models to agnostically choose variables and cut points that discriminate slow walkers (<0.80 m/s). Models with alternative walking speed outcomes were also evaluated (<0.60 and <1.0 m/s and walking speed treated continuously). RESULTS: . Women with GRTBF of less than 0.65 kg/kg were twice as likely to be slow walkers than women with GRTBF of 0.65 kg/kg or greater. Models with alternative walking speed outcomes selected only functions of GR as primary discriminators of slowness in both men and women. DXA-derived lean mass measures did not consistently discriminate slow walkers. CONCLUSION: GR with and without adjustments for body size and composition consistently discriminated older adults with slowness. CART models did not select DXA-based lean mass as a primary discriminator of slowness. These results were presented to an SDOC Consensus Panel, who used them and other information to develop the SDOC Position Statements. J Am Geriatr Soc 68:1419-1428, 2020.","journal":"Journal of the American Geriatrics Society","year":2020,"id":60413,"datarank":0.0,"base_score":0.0,"endowment":0.0,"self_citation_contribution":0.0,"citation_network_contribution":0.0,"self_endowment_contribution":0.0,"citer_contribution":0.0,"corpus_percentile":null,"corpus_rank":null,"citation_count":62,"citer_count":0,"citers_with_citation_signal":0,"citers_with_endowment":0,"datacite_reuse_total":0,"is_dataset":false,"is_dataset_confidence":0.5917,"is_data_producer":false,"deposit_databanks":null,"is_oa":true,"file_count":0,"downloads":0,"has_version_chain":false,"published_date":"2020-01-01","fair_score":null,"fair_percentile":null,"algorithm_id":"datarank_citation_only_1hop_v6","ranking_scope":"data_only","authors":[{"id":109417,"name":"Sheena Patel","orcid":null,"position":1,"is_corresponding":false},{"id":57360,"name":"Anne B. Newman","orcid":"0000-0002-0106-1150","position":2,"is_corresponding":false},{"id":109415,"name":"Thomas G. Travison","orcid":"0000-0002-1030-7175","position":3,"is_corresponding":false},{"id":37304,"name":"Douglas P. Kiel","orcid":"0000-0001-8474-0310","position":4,"is_corresponding":false},{"id":36350,"name":"Michelle Shardell","orcid":"0000-0002-5283-2082","position":5,"is_corresponding":false},{"id":109418,"name":"Karol M. Pencina","orcid":"0000-0003-1824-7047","position":6,"is_corresponding":false},{"id":319499,"name":"Kevin E. Wilson","orcid":null,"position":7,"is_corresponding":false},{"id":319500,"name":"Thomas L. Kelly","orcid":null,"position":8,"is_corresponding":false},{"id":263000,"name":"Joseph M. Massaro","orcid":"0000-0002-2682-4812","position":9,"is_corresponding":false},{"id":109419,"name":"Roger A. Fielding","orcid":"0000-0003-2236-9020","position":10,"is_corresponding":false},{"id":109420,"name":"Jay Magaziner","orcid":null,"position":11,"is_corresponding":false},{"id":109434,"name":"Rosaly Correa‐de‐Araujo","orcid":null,"position":12,"is_corresponding":false},{"id":242506,"name":"Timothy Kwok","orcid":"0000-0001-9253-3549","position":13,"is_corresponding":false},{"id":242509,"name":"Vasant Hirani","orcid":"0000-0003-0131-3079","position":14,"is_corresponding":false},{"id":242507,"name":"Magnus K. Karlsson","orcid":"0000-0002-0616-5928","position":15,"is_corresponding":false},{"id":43418,"name":"Ralph B. D’Agostino","orcid":"0000-0002-3550-8395","position":16,"is_corresponding":false},{"id":242508,"name":"Dan Mellström","orcid":"0000-0003-2761-3723","position":17,"is_corresponding":false},{"id":21920,"name":"Claes Ohlsson","orcid":"0000-0002-9633-2805","position":18,"is_corresponding":false},{"id":242510,"name":"Eva Ribom","orcid":"0009-0002-2648-152X","position":19,"is_corresponding":false},{"id":318561,"name":"Joanne M. Jordan","orcid":"0000-0003-2469-9955","position":20,"is_corresponding":false},{"id":109414,"name":"Shalender Bhasin","orcid":"0000-0002-3982-6200","position":21,"is_corresponding":false},{"id":109435,"name":"Peggy M. Cawthon","orcid":"0000-0003-4938-9478","position":22,"is_corresponding":false},{"id":109416,"name":"Todd M. Manini","orcid":"0000-0002-5970-4462","position":0,"is_corresponding":true}],"reference_count":36,"raw_metadata":null,"created_at":"2026-07-18T21:08:47.852401Z","pmid":"32633834","pmcid":null,"fwci":null,"citation_percentile":null,"influential_citations":0,"oa_status":null,"license":null,"views":0,"total_file_size_bytes":0,"version_count":0,"fair_f":null,"fair_a":null,"fair_i":null,"fair_r":null,"fair_zscore":null,"fair_rationale":null,"fair_model":null,"fair_agent_version":null,"fair_fulltext_source":null,"fair_has_llm":null,"fair_computed_at":null,"clinical_trials":[],"software_tools":[],"db_accessions":[],"linked_datasets":[],"topics":[]}