{"id":"https://openalex.org/W21456331","doi":null,"title":"Combination of alfacalcidol with calcium can improve quadriceps muscle strength in elderly ambulatory Thai women who have hypovitaminosis D: a randomized controlled trial.","display_name":"Combination of alfacalcidol with calcium can improve quadriceps muscle strength in elderly ambulatory Thai women who have hypovitaminosis D: a randomized controlled trial.","publication_year":2009,"publication_date":"2009-09-01","ids":{"openalex":"https://openalex.org/W21456331","mag":"21456331","pmid":"https://pubmed.ncbi.nlm.nih.gov/19894330"},"language":"en","primary_location":{"id":"pmid:19894330","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/19894330","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":"Journal of the Medical Association of Thailand = Chotmaihet thangphaet","raw_type":"Journal Article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["pubmed"],"open_access":{"is_oa":false,"oa_status":"closed","oa_url":null,"any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5057464383","display_name":"Thawee Songpatanasilp","orcid":"https://orcid.org/0000-0002-0612-5299","observed_orcids":["https://orcid.org/0000-0002-0612-5299"]},"institutions":[{"id":"https://openalex.org/I4210087968","display_name":"Phramongkutklao Hospital","ror":"https://ror.org/007h1qz76","country_code":"TH","type":"healthcare","lineage":["https://openalex.org/I4210087968"]},{"id":"https://openalex.org/I4401726974","display_name":"Phramongkutklao College of Medicine","ror":"https://ror.org/04md5yc36","country_code":"TH","type":"education","lineage":["https://openalex.org/I4401726974"]}],"countries":["TH"],"is_corresponding":false,"raw_author_name":"Thawee Songpatanasilp","raw_affiliation_strings":["Department of Orthopedics, Phramongkutklao Army Hospital and College of Medicine, Bangkok, Thailand. thaweesps@yahoo.com"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Orthopedics, Phramongkutklao Army Hospital and College of Medicine, Bangkok, Thailand. thaweesps@yahoo.com","institution_ids":["https://openalex.org/I4210087968","https://openalex.org/I4401726974"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5015735489","display_name":"La\u2010or Chailurkit","orcid":"https://orcid.org/0000-0002-1603-979X","observed_orcids":["https://orcid.org/0000-0002-1603-979X"]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"La-Or Chailurkit","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"middle","author":{"id":"https://openalex.org/A5060470731","display_name":"Akekachai Nichachotsalid","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Akekachai Nichachotsalid","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]},{"author_position":"last","author":{"id":"https://openalex.org/A5066095381","display_name":"Manoj Chantarasorn","orcid":null,"observed_orcids":[]},"institutions":[],"countries":[],"is_corresponding":false,"raw_author_name":"Manoj Chantarasorn","raw_affiliation_strings":[],"raw_orcid":null,"affiliations":[]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":2,"corresponding_author_ids":[],"corresponding_institution_ids":[],"apc_list":null,"apc_paid":null,"fwci":0.9886,"has_fulltext":false,"cited_by_count":22,"citation_normalized_percentile":{"value":0.76484129,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":88,"max":97},"biblio":{"volume":"92 Suppl5","issue":null,"first_page":"S30","last_page":"41"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T10277","display_name":"Vitamin D Research Studies","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/2712","display_name":"Endocrinology, Diabetes and Metabolism"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}},"topics":[{"id":"https://openalex.org/T10277","display_name":"Vitamin D Research Studies","score":0.9965999722480774,"subfield":{"id":"https://openalex.org/subfields/2712","display_name":"Endocrinology, Diabetes and Metabolism"},"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/T10071","display_name":"Bone health and osteoporosis research","score":0.001500000013038516,"subfield":{"id":"https://openalex.org/subfields/2732","display_name":"Orthopedics and Sports Medicine"},"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/T10397","display_name":"Nutrition and Health in Aging","score":0.000699999975040555,"subfield":{"id":"https://openalex.org/subfields/2737","display_name":"Physiology (medical)"},"field":{"id":"https://openalex.org/fields/27","display_name":"Medicine"},"domain":{"id":"https://openalex.org/domains/4","display_name":"Health Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/alfacalcidol","display_name":"alfacalcidol","score":0.9990000128746033},{"id":"https://openalex.org/keywords/calcium-supplementation","display_name":"calcium supplementation","score":0.968999981880188},{"id":"https://openalex.org/keywords/vitamin-d-deficiency","display_name":"vitamin D deficiency","score":0.9639999866485596},{"id":"https://openalex.org/keywords/quadriceps-strength","display_name":"quadriceps strength","score":0.9520000219345093},{"id":"https://openalex.org/keywords/postmenopausal-women","display_name":"postmenopausal women","score":0.8960000276565552},{"id":"https://openalex.org/keywords/older-women","display_name":"older women","score":0.8790000081062317},{"id":"https://openalex.org/keywords/25-hydroxyvitamin-d","display_name":"25-hydroxyvitamin D","score":0.9010000228881836},{"id":"https://openalex.org/keywords/parathyroid-hormone","display_name":"parathyroid hormone","score":0.8619999885559082},{"id":"https://openalex.org/keywords/thai-women","display_name":"Thai women","score":0.7099999785423279}],"concepts":[{"id":"https://openalex.org/C2779126354","wikidata":"https://www.wikidata.org/wiki/Q155883","display_name":"Alfacalcidol","level":4,"score":0.9716477394104004},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.9491435289382935},{"id":"https://openalex.org/C124490489","wikidata":"https://www.wikidata.org/wiki/Q7936963","display_name":"Vitamin D and neurology","level":2,"score":0.6842638254165649},{"id":"https://openalex.org/C27081682","wikidata":"https://www.wikidata.org/wiki/Q269829","display_name":"Placebo","level":3,"score":0.6109268665313721},{"id":"https://openalex.org/C168563851","wikidata":"https://www.wikidata.org/wiki/Q1436668","display_name":"Randomized controlled trial","level":2,"score":0.5698521733283997},{"id":"https://openalex.org/C126322002","wikidata":"https://www.wikidata.org/wiki/Q11180","display_name":"Internal medicine","level":1,"score":0.5352542996406555},{"id":"https://openalex.org/C35785553","wikidata":"https://www.wikidata.org/wiki/Q756720","display_name":"Ambulatory","level":2,"score":0.5197091698646545},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.4138231873512268},{"id":"https://openalex.org/C2776886416","wikidata":"https://www.wikidata.org/wiki/Q4941567","display_name":"Bone mineral","level":3,"score":0.2448851764202118},{"id":"https://openalex.org/C2776541429","wikidata":"https://www.wikidata.org/wiki/Q165328","display_name":"Osteoporosis","level":2,"score":0.11333712935447693},{"id":"https://openalex.org/C204787440","wikidata":"https://www.wikidata.org/wiki/Q188504","display_name":"Alternative medicine","level":2,"score":0.0},{"id":"https://openalex.org/C142724271","wikidata":"https://www.wikidata.org/wiki/Q7208","display_name":"Pathology","level":1,"score":0.0}],"mesh":[{"descriptor_ui":"D000368","descriptor_name":"Aged","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D000704","descriptor_name":"Analysis of Variance","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D002118","descriptor_name":"Calcium","qualifier_ui":"Q000008","qualifier_name":"administration & dosage","is_major_topic":true},{"descriptor_ui":"D004311","descriptor_name":"Double-Blind Method","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"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":"D006887","descriptor_name":"Hydroxycholecalciferols","qualifier_ui":"Q000008","qualifier_name":"administration & dosage","is_major_topic":true},{"descriptor_ui":"D010919","descriptor_name":"Placebos","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D013785","descriptor_name":"Thailand","qualifier_ui":"Q000453","qualifier_name":"epidemiology","is_major_topic":false},{"descriptor_ui":"D014808","descriptor_name":"Vitamin D Deficiency","qualifier_ui":"Q000097","qualifier_name":"blood","is_major_topic":false},{"descriptor_ui":"D014808","descriptor_name":"Vitamin D Deficiency","qualifier_ui":"Q000188","qualifier_name":"drug therapy","is_major_topic":true},{"descriptor_ui":"D016896","descriptor_name":"Treatment Outcome","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D017698","descriptor_name":"Postmenopause","qualifier_ui":null,"qualifier_name":null,"is_major_topic":false},{"descriptor_ui":"D050071","descriptor_name":"Bone Density Conservation Agents","qualifier_ui":"Q000008","qualifier_name":"administration & dosage","is_major_topic":true},{"descriptor_ui":"D052097","descriptor_name":"Quadriceps Muscle","qualifier_ui":"Q000187","qualifier_name":"drug effects","is_major_topic":true},{"descriptor_ui":"D053580","descriptor_name":"Muscle Strength","qualifier_ui":"Q000187","qualifier_name":"drug effects","is_major_topic":true}],"locations_count":1,"locations":[{"id":"pmid:19894330","doi":null,"is_oa":false,"landing_page_url":"https://pubmed.ncbi.nlm.nih.gov/19894330","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":"Journal of the Medical Association of Thailand = Chotmaihet thangphaet","raw_type":"Journal Article"}],"best_oa_location":null,"sustainable_development_goals":[{"display_name":"Good health and well-being","score":0.9907000064849854,"id":"https://metadata.un.org/sdg/3"}],"study_designs":[{"display_name":"Randomized Controlled Trial","id":"https://openalex.org/study-designs/randomized-controlled-trial"},{"display_name":"Clinical Trial","id":"https://openalex.org/study-designs/clinical-trial"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":0,"referenced_works":[],"related_works":["https://openalex.org/W4408546874","https://openalex.org/W2069571104","https://openalex.org/W2072146640","https://openalex.org/W2013629748","https://openalex.org/W2033324236","https://openalex.org/W2103271799","https://openalex.org/W2505114485","https://openalex.org/W7044041236","https://openalex.org/W2013977772","https://openalex.org/W2049492703"],"abstract_inverted_index":{"OBJECTIVE:":[0],"The":[1],"purpose":[2],"of":[3,11,18,29,61,133,153,188,206],"this":[4,51],"study":[5],"was":[6,54,78],"to":[7,50,96,163,209],"evaluate":[8],"the":[9,16,74,81,91,99,138,157],"efficacy":[10],"alfacalcidol":[12,118,161,191],"and":[13,65,94,174],"calcium":[14,113,124,193,210],"on":[15],"improvement":[17,152],"muscle":[19,76,140,154,196],"strength":[20,77,141,155,197],"in":[21,26,98,156,165,198],"ambulatory":[22],"elderly":[23,199],"Thai":[24,200],"women":[25,42,201],"age":[27,43],"group":[28,122,158],"65":[30,44],"or":[31,46],"more":[32,47],"who":[33,89,202],"have":[34],"hypovitaminosis":[35],"D.":[36],"MATERIAL":[37],"AND":[38],"METHOD:":[39],"Seventy-two":[40],"postmenopausal":[41],"years":[45],"were":[48,86,106,150],"enrolled":[49],"study.":[52,103],"Blood":[53],"collected":[55],"from":[56],"all":[57],"participants":[58],"for":[59],"measured":[60,79],"25(OH)D3,":[62],"intact":[63],"PTH":[64],"vitamin":[66],"D":[67],"receptor":[68],"(VDR)":[69],"genotypes.":[70],"After":[71,130],"blood":[72],"collection,":[73],"quadriceps":[75],"using":[80],"isokinetic":[82],"dynamometer":[83],"device.":[84],"There":[85],"42":[87],"subjects":[88,105,136],"satisfy":[90],"eligible":[92],"criteria":[93],"agreed":[95],"participate":[97],"experimental":[100],"randomized":[101,107],"controlled":[102],"These":[104],"into":[108],"two":[109],"groups,":[110],"one":[111],"received":[112,123,160],"1500":[114,125],"g/day":[115,126],"combined":[116],"with":[117,127,192],"0.5":[119,189],"mg/day.":[120],"Another":[121],"placebo.":[128],"RESULTS:":[129],"12":[131],"weeks":[132],"intervention,":[134],"40":[135],"had":[137,203],"second":[139],"measurement":[142],"(2":[143],"dropped":[144],"out).":[145],"By":[146],"ANCOVA":[147],"analysis,":[148],"there":[149],"significant":[151],"that":[159],"compared":[162,208],"placebo":[164],"both":[166],"30":[167],"degrees/sec":[168,176],"(20.28":[169],"vs.16.29,":[170],"p":[171,180],"=":[172,181],"0.025)":[173],"60":[175],"(20.32":[177],"vs.":[178],"15.05,":[179],"0.002)":[182],"angular":[183],"velocities.":[184],"CONCLUSION:":[185],"Daily":[186],"doses":[187],"mg":[190],"effectively":[194],"improved":[195],"low":[204],"level":[205],"25(OH)D3":[207],"alone.":[211]},"counts_by_year":[{"year":2026,"cited_by_count":1},{"year":2024,"cited_by_count":2},{"year":2020,"cited_by_count":2},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":1},{"year":2017,"cited_by_count":2},{"year":2016,"cited_by_count":1},{"year":2015,"cited_by_count":3},{"year":2014,"cited_by_count":2},{"year":2013,"cited_by_count":1},{"year":2012,"cited_by_count":1}],"updated_date":"2026-11-10T11:39:43.021295","created_date":"2016-06-24T00:00:00"}
