{"id":"https://openalex.org/W55584526","doi":null,"title":"Isokinetic hamstring and quadriceps muscle strength profiles of elite South African football players","display_name":"Isokinetic hamstring and quadriceps muscle strength profiles of elite South African football players","publication_year":2014,"publication_date":"2014-09-01","ids":{"openalex":"https://openalex.org/W55584526","mag":"55584526"},"language":"en","primary_location":{"id":"mag:2271967896","doi":null,"is_oa":false,"landing_page_url":"https://journals.co.za/content/ajpherd/20/3/EJC166025","pdf_url":null,"source":{"id":"https://openalex.org/S133472793","display_name":"African Journal for Physical Health Education Recreation and Dance","issn_l":"1117-4315","issn":["1117-4315"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310321518","host_organization_name":"African Journals OnLine","host_organization_lineage":["https://openalex.org/P4310321518"],"host_organization_lineage_names":["African Journals OnLine"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"African Journal for Physical Health Education Recreation and Dance","raw_type":null},"volume":null,"type":"article","is_traditional":true,"indexed_in":[],"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/A5028287682","display_name":"JD Aginsky","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I192619145","display_name":"University of the Witwatersrand","ror":"https://ror.org/03rp50x72","country_code":"ZA","type":"education","lineage":["https://openalex.org/I192619145"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Kerith D. Aginsky","raw_affiliation_strings":["university of the Witwatersrand"],"raw_orcid":"https://orcid.org/0000-0001-8460-9347","affiliations":[{"raw_affiliation_string":"university of the Witwatersrand","institution_ids":["https://openalex.org/I192619145"]}]},{"author_position":"middle","author":{"id":"https://openalex.org/A5090056374","display_name":"Natalia Neophytou","orcid":"https://orcid.org/0000-0002-0085-2970","observed_orcids":["https://orcid.org/0000-0002-0085-2970"]},"institutions":[{"id":"https://openalex.org/I192619145","display_name":"University of the Witwatersrand","ror":"https://ror.org/03rp50x72","country_code":"ZA","type":"education","lineage":["https://openalex.org/I192619145"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Natalia Neophytou","raw_affiliation_strings":["university of the Witwatersrand"],"raw_orcid":"https://orcid.org/0000-0002-0085-2970","affiliations":[{"raw_affiliation_string":"university of the Witwatersrand","institution_ids":["https://openalex.org/I192619145"]}]},{"author_position":"last","author":{"id":"https://openalex.org/A5014120522","display_name":"Thalia Charalambous","orcid":null,"observed_orcids":[]},"institutions":[{"id":"https://openalex.org/I192619145","display_name":"University of the Witwatersrand","ror":"https://ror.org/03rp50x72","country_code":"ZA","type":"education","lineage":["https://openalex.org/I192619145"]}],"countries":["ZA"],"is_corresponding":false,"raw_author_name":"Thalia Charalambous","raw_affiliation_strings":["university of the Witwatersrand"],"raw_orcid":null,"affiliations":[{"raw_affiliation_string":"university of the Witwatersrand","institution_ids":["https://openalex.org/I192619145"]}]}],"institutions":[],"countries_distinct_count":1,"institutions_distinct_count":1,"corresponding_author_ids":[],"corresponding_institution_ids":["https://openalex.org/I192619145"],"apc_list":null,"apc_paid":null,"fwci":0.6954,"has_fulltext":false,"cited_by_count":11,"citation_normalized_percentile":{"value":0.70843499,"is_in_top_1_percent":false,"is_in_top_10_percent":false},"cited_by_percentile_year":{"min":87,"max":96},"biblio":{"volume":"20","issue":"3","first_page":"1225","last_page":"1236"},"is_retracted":false,"is_paratext":false,"is_xpac":false,"primary_topic":{"id":"https://openalex.org/T11246","display_name":"Sports injuries and prevention","score":0.5952000021934509,"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"}},"topics":[{"id":"https://openalex.org/T11246","display_name":"Sports injuries and prevention","score":0.5952000021934509,"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/T10157","display_name":"Sports Performance and Training","score":0.3792000114917755,"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/T10442","display_name":"Knee injuries and reconstruction techniques","score":0.007799999788403511,"subfield":{"id":"https://openalex.org/subfields/2746","display_name":"Surgery"},"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/isokinetic-strength","display_name":"isokinetic strength","score":0.8920000195503235},{"id":"https://openalex.org/keywords/hamstring-strength","display_name":"hamstring strength","score":0.9229999780654907},{"id":"https://openalex.org/keywords/quadriceps-strength","display_name":"quadriceps strength","score":0.9990000128746033},{"id":"https://openalex.org/keywords/muscular-endurance","display_name":"muscular endurance","score":0.6949999928474426},{"id":"https://openalex.org/keywords/football-players","display_name":"football players","score":0.7829999923706055},{"id":"https://openalex.org/keywords/muscle-imbalance","display_name":"muscle imbalance","score":0.7110000252723694},{"id":"https://openalex.org/keywords/hamstring-strain-injury","display_name":"hamstring strain","score":0.5950000286102295},{"id":"https://openalex.org/keywords/anterior-cruciate-ligament-injury","display_name":"anterior cruciate ligament injury","score":0.7929999828338623},{"id":"https://openalex.org/keywords/lower-limb-injuries","display_name":"lower limb injuries","score":0.5059999823570251},{"id":"https://openalex.org/keywords/elite-athletes","display_name":"elite athletes","score":0.4189999997615814}],"concepts":[{"id":"https://openalex.org/C2776141760","wikidata":"https://www.wikidata.org/wiki/Q196002","display_name":"Hamstring","level":2,"score":0.9079967737197876},{"id":"https://openalex.org/C90296322","wikidata":"https://www.wikidata.org/wiki/Q619776","display_name":"Concentric","level":2,"score":0.742896318435669},{"id":"https://openalex.org/C3017797855","wikidata":"https://www.wikidata.org/wiki/Q937857","display_name":"Football players","level":3,"score":0.69478440284729},{"id":"https://openalex.org/C100784341","wikidata":"https://www.wikidata.org/wiki/Q1340491","display_name":"Eccentric","level":2,"score":0.6929054260253906},{"id":"https://openalex.org/C2778444522","wikidata":"https://www.wikidata.org/wiki/Q1081491","display_name":"Football","level":2,"score":0.5185266733169556},{"id":"https://openalex.org/C71924100","wikidata":"https://www.wikidata.org/wiki/Q11190","display_name":"Medicine","level":0,"score":0.5123818516731262},{"id":"https://openalex.org/C1862650","wikidata":"https://www.wikidata.org/wiki/Q186005","display_name":"Physical therapy","level":1,"score":0.5113624930381775},{"id":"https://openalex.org/C2779136467","wikidata":"https://www.wikidata.org/wiki/Q359090","display_name":"Hamstring injury","level":4,"score":0.49988818168640137},{"id":"https://openalex.org/C99508421","wikidata":"https://www.wikidata.org/wiki/Q2678675","display_name":"Physical medicine and rehabilitation","level":1,"score":0.46323248744010925},{"id":"https://openalex.org/C33923547","wikidata":"https://www.wikidata.org/wiki/Q395","display_name":"Mathematics","level":0,"score":0.21576568484306335},{"id":"https://openalex.org/C3017944768","wikidata":"https://www.wikidata.org/wiki/Q1450463","display_name":"Poison control","level":2,"score":0.12080368399620056},{"id":"https://openalex.org/C121332964","wikidata":"https://www.wikidata.org/wiki/Q413","display_name":"Physics","level":0,"score":0.11876404285430908},{"id":"https://openalex.org/C190385971","wikidata":"https://www.wikidata.org/wiki/Q373494","display_name":"Injury prevention","level":3,"score":0.11315897107124329},{"id":"https://openalex.org/C2524010","wikidata":"https://www.wikidata.org/wiki/Q8087","display_name":"Geometry","level":1,"score":0.06148886680603027},{"id":"https://openalex.org/C17744445","wikidata":"https://www.wikidata.org/wiki/Q36442","display_name":"Political science","level":0,"score":0.0},{"id":"https://openalex.org/C199539241","wikidata":"https://www.wikidata.org/wiki/Q7748","display_name":"Law","level":1,"score":0.0},{"id":"https://openalex.org/C62520636","wikidata":"https://www.wikidata.org/wiki/Q944","display_name":"Quantum mechanics","level":1,"score":0.0},{"id":"https://openalex.org/C99454951","wikidata":"https://www.wikidata.org/wiki/Q932068","display_name":"Environmental health","level":1,"score":0.0}],"mesh":[],"locations_count":2,"locations":[{"id":"mag:2271967896","doi":null,"is_oa":false,"landing_page_url":"https://journals.co.za/content/ajpherd/20/3/EJC166025","pdf_url":null,"source":{"id":"https://openalex.org/S133472793","display_name":"African Journal for Physical Health Education Recreation and Dance","issn_l":"1117-4315","issn":["1117-4315"],"is_oa":false,"is_in_doaj":false,"is_core":false,"listed_in":[],"host_organization":"https://openalex.org/P4310321518","host_organization_name":"African Journals OnLine","host_organization_lineage":["https://openalex.org/P4310321518"],"host_organization_lineage_names":["African Journals OnLine"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"African Journal for Physical Health Education Recreation and Dance","raw_type":null},{"id":"mag:55584526","doi":null,"is_oa":false,"landing_page_url":"https://www.researchgate.net/profile/Natalia_Neophytou/publication/274066890_Isokinetic_hamstring_and_quadriceps_muscle_strength_profiles_of_elite_South_African_football_players/links/5513c31a0cf23203199cc2cc.pdf","pdf_url":null,"source":{"id":"https://openalex.org/S2755080209","display_name":"Journal of Physical Activity and Health","issn_l":"1543-3080","issn":["1543-3080","1543-5474"],"is_oa":false,"is_in_doaj":false,"is_core":true,"listed_in":["anvur-scientific","cwts-core","dongbi-c","doyens","jufo-1","ki-jl-1","medline","norway-1","poland-70","russia-white-list-1","vabb-shw"],"host_organization":"https://openalex.org/P4310322142","host_organization_name":"Human Kinetics","host_organization_lineage":["https://openalex.org/P4310322142"],"host_organization_lineage_names":["Human Kinetics"],"type":"journal"},"license":null,"license_id":null,"version":null,"is_accepted":false,"is_published":false,"raw_source_name":"Journal of Physical Activity and Health","raw_type":null}],"best_oa_location":null,"sustainable_development_goals":[{"id":"https://metadata.un.org/sdg/3","score":0.9391000270843506,"display_name":"Good health and well-being"}],"study_designs":[{"id":"https://openalex.org/study-designs/observational-study","display_name":"Observational Study"}],"awards":[],"funders":[],"has_content":{"grobid_xml":false,"pdf":false},"content_urls":null,"referenced_works_count":43,"referenced_works":["https://openalex.org/W50631770","https://openalex.org/W58589440","https://openalex.org/W97624237","https://openalex.org/W214374611","https://openalex.org/W560151326","https://openalex.org/W1493707677","https://openalex.org/W1778571194","https://openalex.org/W1872928853","https://openalex.org/W1889916832","https://openalex.org/W1974985696","https://openalex.org/W1981481975","https://openalex.org/W1992243813","https://openalex.org/W2023088079","https://openalex.org/W2023620718","https://openalex.org/W2025075842","https://openalex.org/W2030147519","https://openalex.org/W2037067347","https://openalex.org/W2049677572","https://openalex.org/W2059322051","https://openalex.org/W2069060639","https://openalex.org/W2070093064","https://openalex.org/W2078530281","https://openalex.org/W2096570385","https://openalex.org/W2097865861","https://openalex.org/W2099511871","https://openalex.org/W2099922968","https://openalex.org/W2102905035","https://openalex.org/W2109187444","https://openalex.org/W2114643475","https://openalex.org/W2119067061","https://openalex.org/W2123737647","https://openalex.org/W2123935779","https://openalex.org/W2126065895","https://openalex.org/W2126642707","https://openalex.org/W2128213777","https://openalex.org/W2132633634","https://openalex.org/W2134183422","https://openalex.org/W2147606380","https://openalex.org/W2166377170","https://openalex.org/W2189545724","https://openalex.org/W2274617992","https://openalex.org/W2413564614","https://openalex.org/W2795337844"],"related_works":["https://openalex.org/W2271967896","https://openalex.org/W2018308851","https://openalex.org/W2165650509","https://openalex.org/W2803968106","https://openalex.org/W3000590969","https://openalex.org/W2142332460","https://openalex.org/W2008569684","https://openalex.org/W2154855008","https://openalex.org/W3034117762","https://openalex.org/W4387472749"],"abstract_inverted_index":{"Football":[0],"players":[1],"are":[2],"at":[3,47,61,121],"risk":[4],"of":[5],"lower":[6],"limb":[7],"injuries,":[8],"specifically":[9],"hamstring":[10,28],"muscle":[11,18,31],"strains":[12],"and":[13,29,33,55,84,104,109,116],"ACL":[14],"injuries":[15],"due":[16],"to":[17,70],"imbalances.":[19],"This":[20],"was":[21,45,59],"a":[22,93],"descriptive":[23],"study":[24],"assessing":[25],"the":[26],"isokinetic":[27],"quadriceps":[30],"strength":[32,44],"endurance":[34,58],"in":[35],"28":[36],"elite,":[37],"male,":[38],"South":[39],"African":[40],"football":[41],"players.":[42],"Muscle":[43,57],"tested":[46,60],"60":[48,122],"\u25e6":[49,63],"/s":[50,64],"over":[51,65],"5":[52],"repetitions":[53],"concentrically":[54],"eccentrically.":[56],"180":[62],"15":[66],"repetitions.":[67],"Peak":[68],"torque":[69],"body":[71],"weight":[72],"ratio":[73,76,80,83],"(PT/BW);":[74],"reciprocal":[75],"(H/Q);":[77],"dynamic":[78],"control":[79],"(DCR),":[81],"bilateral":[82],"relative":[85],"fatigue":[86],"were":[87,90],"calculated.":[88],"Data":[89],"analyzed":[91],"using":[92],"Levene\u2018s":[94],"t-test.":[95],"The":[96],"concentric":[97],"H/Q":[98],"ratios":[99,111],"(Dominant:":[100,112],"64.7":[101],"\u00b1":[102,107,114,119],"9.3%":[103],"Non-dominant:":[105,117],"60.9":[106],"11.1%)":[108],"eccentric":[110],"69.0":[113],"12.2%":[115],"67.0":[118],"12.8%)":[120],"o":[123]},"counts_by_year":[{"year":2024,"cited_by_count":1},{"year":2023,"cited_by_count":1},{"year":2022,"cited_by_count":1},{"year":2021,"cited_by_count":1},{"year":2020,"cited_by_count":1},{"year":2019,"cited_by_count":2},{"year":2018,"cited_by_count":2},{"year":2017,"cited_by_count":1},{"year":2016,"cited_by_count":1}],"updated_date":"2026-11-05T12:25:35.769452","created_date":"2016-06-24T00:00:00"}