{"id":"https://openalex.org/W7225314915","doi":"https://doi.org/10.3389/fphys.2026.1991345","title":"Lower-limb kinematics and relative EMG amplitude distributions during role\u2013task-specific volleyball spike-jump take-off in middle blockers and opposite hitters","display_name":"Lower-limb kinematics and relative EMG amplitude distributions during role\u2013task-specific volleyball spike-jump take-off in middle blockers and opposite hitters","publication_year":2026,"publication_date":"2026-11-05","ids":{"openalex":"https://openalex.org/W7225314915","doi":"https://doi.org/10.3389/fphys.2026.1991345"},"language":"en","primary_location":{"id":"doi:10.3389/fphys.2026.1991345","doi":"https://doi.org/10.3389/fphys.2026.1991345","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fphys.2026.1991345","pdf_url":"https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2026.1991345/pdf","source":{"id":"https://openalex.org/S52732750","display_name":"Frontiers in Physiology","issn_l":"1664-042X","issn":["1664-042X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Physiology","raw_type":"journal-article"},"volume":null,"type":"article","is_traditional":true,"indexed_in":["crossref","doaj"],"open_access":{"is_oa":true,"oa_status":"gold","oa_url":"https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2026.1991345/pdf","any_repository_has_fulltext":false},"authorships":[{"author_position":"first","author":{"id":"https://openalex.org/A5006393319","display_name":"Hongjian Gao","orcid":"https://orcid.org/0009-0003-1667-9601","observed_orcids":["https://orcid.org/0009-0003-1667-9601"]},"institutions":[{"id":"https://openalex.org/I120158604","display_name":"Kunsan National University","ror":"https://ror.org/02yj55q56","country_code":"KR","type":"education","lineage":["https://openalex.org/I120158604"]}],"countries":["KR"],"is_corresponding":false,"raw_author_name":"Hongjian Gao","raw_affiliation_strings":["Department of Physical Education, Kunsan National University","Department of Physical Education, Zhengzhou University of Finance and Economics"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physical Education, Kunsan National University","institution_ids":["https://openalex.org/I120158604"]},{"raw_affiliation_string":"Department of Physical Education, Zhengzhou University of Finance and Economics","institution_ids":[]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5036227450","display_name":"Song Bin","orcid":"https://orcid.org/0000-0001-5156-3784","observed_orcids":["https://orcid.org/0000-0001-5156-3784"]},"institutions":[{"id":"https://openalex.org/I4210117382","display_name":"Anyang Normal University","ror":"https://ror.org/02g9nss57","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210117382"]}],"countries":["CN"],"is_corresponding":false,"raw_author_name":"Bin Song","raw_affiliation_strings":["School of Physical Education, Anyang Normal University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"School of Physical Education, Anyang Normal University","institution_ids":["https://openalex.org/I4210117382"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5100418383","display_name":"Chen Chen","orcid":"https://orcid.org/0000-0001-8572-0856","observed_orcids":["https://orcid.org/0000-0001-8572-0856"]},"institutions":[{"id":"https://openalex.org/I120158604","display_name":"Kunsan National University","ror":"https://ror.org/02yj55q56","country_code":"KR","type":"education","lineage":["https://openalex.org/I120158604"]},{"id":"https://openalex.org/I4405282488","display_name":"Shandong Polytechnic","ror":"https://ror.org/05xc6df26","country_code":"CN","type":"education","lineage":["https://openalex.org/I4210096525","https://openalex.org/I4387155179","https://openalex.org/I4405282488"]}],"countries":["CN","KR"],"is_corresponding":true,"raw_author_name":"Chen Chen","raw_affiliation_strings":["Department of Physical Education and Aesthetic Education, Shandong Polytechnic","Department of Physical Education, Kunsan National University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physical Education and Aesthetic Education, Shandong Polytechnic","institution_ids":["https://openalex.org/I4405282488"]},{"raw_affiliation_string":"Department of Physical Education, Kunsan National University","institution_ids":["https://openalex.org/I120158604"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5160842574","display_name":"Hongshan Yang","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I120158604","display_name":"Kunsan National University","ror":"https://ror.org/02yj55q56","country_code":"KR","type":"education","lineage":["https://openalex.org/I120158604"]}],"countries":["KR"],"is_corresponding":true,"raw_author_name":"Hongshan Yang","raw_affiliation_strings":["Department of Physical Education, Kunsan National University"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"Department of Physical Education, Kunsan National University","institution_ids":["https://openalex.org/I120158604"]}]}],"institutions":[],"countries_distinct_count":2,"institutions_distinct_count":3,"corresponding_author_ids":["https://openalex.org/A5100418383","https://openalex.org/A5160842574"],"corresponding_institution_ids":["https://openalex.org/I120158604","https://openalex.org/I4405282488"],"apc_list":{"value":3150,"currency":"CHF","value_usd":3801},"apc_paid":{"value":3150,"currency":"CHF","value_usd":3801},"fwci":0.0,"has_fulltext":true,"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":"17","issue":null,"first_page":null,"last_page":null},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T12677","display_name":"Sports Dynamics and Biomechanics","score":0.8012999892234802,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},"topics":[{"id":"https://openalex.org/T12677","display_name":"Sports Dynamics and Biomechanics","score":0.8012999892234802,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}},{"id":"https://openalex.org/T10157","display_name":"Sports Performance and Training","score":0.09989999979734421,"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/T10784","display_name":"Muscle activation and electromyography studies","score":0.047600001096725464,"subfield":{"id":"https://openalex.org/subfields/2204","display_name":"Biomedical Engineering"},"field":{"id":"https://openalex.org/fields/22","display_name":"Engineering"},"domain":{"id":"https://openalex.org/domains/3","display_name":"Physical Sciences"}}],"keywords":[{"id":"https://openalex.org/keywords/volleyball","display_name":"volleyball","score":0.777999997138977},{"id":"https://openalex.org/keywords/middle-blocker","display_name":"middle blockers","score":0.7860000133514404},{"id":"https://openalex.org/keywords/lower-limb-kinematics","display_name":"lower limb kinematics","score":0.984000027179718}],"concepts":[{"id":"https://openalex.org/C39920418","wikidata":"https://www.wikidata.org/wiki/Q11476","display_name":"Kinematics","level":2,"score":0.7419999837875366},{"id":"https://openalex.org/C2780451532","wikidata":"https://www.wikidata.org/wiki/Q759676","display_name":"Task (project management)","level":2,"score":0.5843999981880188},{"id":"https://openalex.org/C180205008","wikidata":"https://www.wikidata.org/wiki/Q159190","display_name":"Amplitude","level":2,"score":0.5616999864578247},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.5475999712944031},{"id":"https://openalex.org/C2777515770","wikidata":"https://www.wikidata.org/wiki/Q507369","display_name":"Electromyography","level":2,"score":0.5307000279426575},{"id":"https://openalex.org/C2778640784","wikidata":"https://www.wikidata.org/wiki/Q168002","display_name":"Ankle","level":2,"score":0.5055000185966492},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.5015000104904175},{"id":"https://openalex.org/C2780695682","wikidata":"https://www.wikidata.org/wiki/Q4005959","display_name":"Jump","level":2,"score":0.4894999861717224},{"id":"https://openalex.org/C2781054738","wikidata":"https://www.wikidata.org/wiki/Q4813730","display_name":"Athletes","level":2,"score":0.4284000098705292},{"id":"https://openalex.org/C105795698","wikidata":"https://www.wikidata.org/wiki/Q12483","display_name":"Statistics","level":1,"score":0.4083000123500824},{"id":"https://openalex.org/C2778067643","wikidata":"https://www.wikidata.org/wiki/Q166507","display_name":"Interval (graph theory)","level":2,"score":0.3422999978065491},{"id":"https://openalex.org/C198082294","wikidata":"https://www.wikidata.org/wiki/Q3399648","display_name":"Position (finance)","level":2,"score":0.33970001339912415},{"id":"https://openalex.org/C130367717","wikidata":"https://www.wikidata.org/wiki/Q189791","display_name":"Diagonal","level":2,"score":0.31540000438690186},{"id":"https://openalex.org/C2779897013","wikidata":"https://www.wikidata.org/wiki/Q1151752","display_name":"Jumping","level":2,"score":0.3052999973297119},{"id":"https://openalex.org/C104114177","wikidata":"https://www.wikidata.org/wiki/Q79782","display_name":"Motion (physics)","level":2,"score":0.3046000003814697},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.29760000109672546},{"id":"https://openalex.org/C41008148","wikidata":"https://www.wikidata.org/wiki/Q21198","display_name":"Computer science","level":0,"score":0.29600000381469727},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.27869999408721924},{"id":"https://openalex.org/C44154836","wikidata":"https://www.wikidata.org/wiki/Q45045","display_name":"Simulation","level":1,"score":0.26109999418258667},{"id":"https://openalex.org/C44249647","wikidata":"https://www.wikidata.org/wiki/Q208498","display_name":"Confidence interval","level":2,"score":0.2565000057220459}],"mesh":[],"locations_count":2,"locations":[{"id":"doi:10.3389/fphys.2026.1991345","doi":"https://doi.org/10.3389/fphys.2026.1991345","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fphys.2026.1991345","pdf_url":"https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2026.1991345/pdf","source":{"id":"https://openalex.org/S52732750","display_name":"Frontiers in Physiology","issn_l":"1664-042X","issn":["1664-042X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Physiology","raw_type":"journal-article"},{"id":"pmh:oai:doaj.org/article:d38962c00f3b413ab4ec04f3bf55fa40","doi":null,"is_oa":false,"landing_page_url":"https://doaj.org/article/d38962c00f3b413ab4ec04f3bf55fa40","pdf_url":null,"source":{"id":"https://openalex.org/S4306401280","display_name":"DOAJ (DOAJ: Directory of Open Access Journals)","issn_l":null,"issn":null,"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":null,"host_organization_name":null,"host_organization_lineage":[],"host_organization_lineage_names":[],"type":"repository"},"license":null,"license_id":null,"version":"submittedVersion","is_accepted":false,"is_published":false,"raw_source_name":"Frontiers in Physiology, Vol 17 (2026)","raw_type":"article"}],"best_oa_location":{"id":"doi:10.3389/fphys.2026.1991345","doi":"https://doi.org/10.3389/fphys.2026.1991345","is_oa":true,"landing_page_url":"https://doi.org/10.3389/fphys.2026.1991345","pdf_url":"https://www.frontiersin.org/journals/physiology/articles/10.3389/fphys.2026.1991345/pdf","source":{"id":"https://openalex.org/S52732750","display_name":"Frontiers in Physiology","issn_l":"1664-042X","issn":["1664-042X"],"is_oa":true,"is_in_doaj":true,"is_core":true,"listed_in":["anvur-scientific","cwts-core","doaj","norway-1","poland-100","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310320527","host_organization_name":"Frontiers Media","host_organization_lineage":["https://openalex.org/P4310320527"],"host_organization_lineage_names":["Frontiers Media"],"type":"journal"},"license":"cc-by","license_id":"https://openalex.org/licenses/cc-by","version":"publishedVersion","is_accepted":true,"is_published":true,"raw_source_name":"Frontiers in Physiology","raw_type":"journal-article"},"sustainable_development_goals":[],"study_designs":[],"awards":[],"funders":[],"has_content":{"pdf":true,"grobid_xml":true},"content_urls":{"pdf":"https://content.openalex.org/works/W7225314915.pdf","grobid_xml":"https://content.openalex.org/works/W7225314915.grobid-xml"},"referenced_works_count":36,"referenced_works":["https://openalex.org/W2000439420","https://openalex.org/W2006034315","https://openalex.org/W2019865869","https://openalex.org/W2071529525","https://openalex.org/W2083903753","https://openalex.org/W2084176026","https://openalex.org/W2086801037","https://openalex.org/W2092548218","https://openalex.org/W2157365163","https://openalex.org/W2165575471","https://openalex.org/W2488164446","https://openalex.org/W2551902263","https://openalex.org/W2740861244","https://openalex.org/W2756051753","https://openalex.org/W2781828337","https://openalex.org/W2783099771","https://openalex.org/W2907950591","https://openalex.org/W2912846241","https://openalex.org/W2955218025","https://openalex.org/W2960962081","https://openalex.org/W3000319722","https://openalex.org/W3012192400","https://openalex.org/W3035386766","https://openalex.org/W3036365299","https://openalex.org/W3123175297","https://openalex.org/W3136890834","https://openalex.org/W3177508314","https://openalex.org/W3200702650","https://openalex.org/W4387949686","https://openalex.org/W4393390073","https://openalex.org/W4403560518","https://openalex.org/W4405563785","https://openalex.org/W4406989978","https://openalex.org/W7117515149","https://openalex.org/W7135010931","https://openalex.org/W7167787568"],"related_works":["https://openalex.org/W7215120210","https://openalex.org/W7213544247","https://openalex.org/W3135489395","https://openalex.org/W4411738055","https://openalex.org/W2371173423","https://openalex.org/W7216372962","https://openalex.org/W4393868593","https://openalex.org/W2183341116","https://openalex.org/W4389766402","https://openalex.org/W1877542216"],"abstract_inverted_index":{"Background":[0],"Volleyball":[1],"spike-jump":[2],"take-off":[3,9,168],"requires":[4],"coordinated":[5],"lower-limb":[6,28,73],"movement,":[7],"yet":[8],"organization":[10],"during":[11,35,259],"customary":[12,64],"attack":[13,65,105,122],"tasks":[14],"of":[15,117,137],"middle":[16],"blockers":[17],"(MBs)":[18],"and":[19,30,41,58,71,84,104,125,166,198,205,246,263],"opposite":[20],"hitters":[21],"(OPPs)":[22],"remains":[23],"unclear.":[24],"This":[25],"study":[26],"compared":[27],"kinematics":[29],"relative":[31,255],"EMG":[32,256],"amplitude":[33,225],"distributions":[34,258],"near-net":[36],"quick":[37],"attacks":[38,44],"by":[39,45,99,134],"MBs":[40,57],"back-row":[42],"diagonal":[43],"OPPs.":[46],"Methods":[47],"Eighteen":[48],"male":[49],"Chinese":[50],"National":[51],"Level":[52],"I":[53],"volleyball":[54,88],"athletes":[55],"(9":[56],"9":[59],"OPPs)":[60],"performed":[61],"their":[62],"corresponding":[63],"tasks.":[66],"Synchronized":[67],"three-dimensional":[68],"motion":[69],"capture":[70],"bilateral":[72,247,264],"surface":[74],"electromyography":[75],"were":[76,107,127,211],"recorded.":[77],"Each":[78],"athlete":[79],"completed":[80],"six":[81],"formal":[82],"trials,":[83],"three":[85],"nationally":[86],"qualified":[87],"referees":[89],"selected":[90],"the":[91,135,191,230],"trial":[92],"that":[93],"best":[94],"met":[95],"predefined":[96],"task":[97,106,144],"criteria":[98],"consensus.":[100],"Because":[101],"player":[102,119],"position":[103],"coupled,":[108],"comparisons":[109],"represented":[110],"role\u2013task":[111,231,241],"contexts":[112,242],"rather":[113],"than":[114,190],"independent":[115],"effects":[116],"either":[118,220],"role":[120],"or":[121],"task.":[123,193],"T1\u2013T3":[124],"T3\u2013T4":[126,148],"defined":[128],"as":[129,271],"operational":[130],"kinematic":[131],"intervals":[132],"separated":[133],"instant":[136],"maximum":[138],"right-knee":[139],"flexion.":[140],"Results":[141],"The":[142,239],"OPP":[143],"showed":[145],"a":[146],"longer":[147],"interval":[149],"(0.17":[150],"\u00b1":[151,155,171,175],"0.01":[152,156],"vs.":[153,173],"0.12":[154],"s;":[157,177],"adjusted":[158,178],"p":[159,179],"=":[160,180,188],"4.98":[161],"\u00d7":[162,182],"10":[163,183],"-9":[164],")":[165],"total":[167],"time":[169],"(0.43":[170],"0.02":[172],"0.35":[174],"0.03":[176],"2.64":[181],"-5":[184],";":[185],"Hedges\u2019":[186],"g":[187],"2.94)":[189],"MB":[192],"Most":[194],"statistically":[195],"significant":[196,209],"ankle-":[197],"knee-angle":[199],"differences":[200,210,253],"occurred":[201],"at":[202,207],"T1,":[203],"T2,":[204],"T3;":[206],"T4,":[208],"detected":[212],"for":[213,219,274],"both":[214],"ankle":[215],"angles":[216],"but":[217,233],"not":[218],"knee":[221],"angle.":[222],"Relative":[223],"RMS":[224],"shares":[226],"also":[227],"differed":[228],"between":[229],"contexts,":[232],"these":[234],"findings":[235],"remain":[236],"exploratory.":[237],"Conclusion":[238],"two":[240],"demonstrated":[243],"distinct":[244],"temporal":[245],"joint-motion":[248],"profiles,":[249],"together":[250],"with":[251],"exploratory":[252],"in":[254],"signal":[257],"take-off.":[260],"Take-off":[261],"duration":[262],"joint-angle":[265],"change":[266],"measures":[267,273],"warrant":[268],"further":[269],"evaluation":[270],"candidate":[272],"task-specific":[275],"assessment.":[276]},"counts_by_year":[],"updated_date":"2026-11-08T12:12:28.789561","created_date":"2026-11-06T00:00:00"}
