{"id":{"repo_id":"unlv","oai_identifier":"oai:oasis.library.unlv.edu:rtds-2251"},"canonical_url":"https://search.dev.ndltd.org/etd/unlv/oai:oasis.library.unlv.edu:rtds-2251","repository":{"repo_id":"unlv","name":"University of Nevada - Las Vegas","base_url":"https://oasis.library.unlv.edu/do/oai/"},"display":{"title":"Muscle performance during slow isokinetic speeds","abstract":"The purpose of this study was to investigate the possible mechanism responsible for the decrease in force during the 5°/sec velocity compared to the isometric velocity. Subjects (n = 9) completed MVC knee extension exercises during eccentric speeds of 5, 10, and 15°/sec, as well as isometric contractions. Extensor force and average EMG (aEMG) of the vastus lateralis (VL) and biceps femoris (BF) were quantified at knee angles of 55° and 65°. Six ANOVA (alpha = 0.05) tests determined a decrease in FT (p < 0.05) at both knee angles and a decrease in VL aEMG (p < 0.05) at 55° during 5°/sec condition compared to the isometric condition. No change in BF aEMG was observed across speeds (p > 0.05). It was concluded that there is a controlling mechanism which is neurological in nature which reduces F T during slow eccentric conditions.","abstract_html":"The purpose of this study was to investigate the possible mechanism responsible for the decrease in force during the 5°/sec velocity compared to the isometric velocity. Subjects (n = 9) completed MVC knee extension exercises during eccentric speeds of 5, 10, and 15°/sec, as well as isometric contractions. Extensor force and average EMG (aEMG) of the vastus lateralis (VL) and biceps femoris (BF) were quantified at knee angles of 55° and 65°. Six ANOVA (alpha = 0.05) tests determined a decrease in FT (p &lt; 0.05) at both knee angles and a decrease in VL aEMG (p &lt; 0.05) at 55° during 5°/sec condition compared to the isometric condition. No change in BF aEMG was observed across speeds (p &gt; 0.05). It was concluded that there is a controlling mechanism which is neurological in nature which reduces F T during slow eccentric conditions.","abstract_has_math":false,"creators":["Kwantes, Jonathan Michael"],"institution":"University of Nevada, Las Vegas","degree_name":"Master of Science (MS)","degree_level":"Thesis","degree_discipline":"Kinesiology","degree_department":null,"school":null,"contributors":["John Mercer"],"advisors":[],"committee_chairs":[],"committee_members":[],"year":2001,"date_issued":"2001-01-01T08:00:00Z","date_published":"2001-01-01T08:00:00Z","updated_at":"2026-07-24T05:25:18Z","subjects":[],"languages":["English"],"rights":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"],"rights_urls":[],"identifier_entries":[{"key":"dc:identifier","label":"Identifier","values":["https://oasis.library.unlv.edu/rtds/1252"],"render_values":[{"text":"https://oasis.library.unlv.edu/rtds/1252","href":"https://oasis.library.unlv.edu/rtds/1252","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.25669/0n63-zptb","outbound_label":"DOI","outbound_source":"dc:identifier"},"metadata_groups":[{"id":"people","label":"People","entries":[{"key":"dc:contributor","label":"Contributor","values":["John Mercer"]},{"key":"dc:creator","label":"Author","values":["Kwantes, Jonathan Michael"]}]},{"id":"academic_context","label":"Academic Context","entries":[{"key":"dc:publisher","label":"Institution","values":["University of Nevada, Las Vegas"]},{"key":"dc:type","label":"Dc Type","values":["Text"]},{"key":"thesis:degree_discipline","label":"Discipline","values":["Kinesiology"]},{"key":"thesis:degree_level","label":"Degree Level","values":["Thesis"]},{"key":"thesis:degree_name","label":"Degree Name","values":["Master of Science (MS)"]}]},{"id":"language_rights","label":"Language and Rights","entries":[{"key":"dc:language","label":"Dc Language","values":["English"]},{"key":"dc:rights","label":"Dc Rights","values":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"]}]},{"id":"identifiers","label":"Identifiers","entries":[{"key":"dc:identifier","label":"Identifier","values":["10.25669/0n63-zptb","https://oasis.library.unlv.edu/rtds/1252","https://oasis.library.unlv.edu/context/rtds/article/2251/viewcontent/uc.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of this study was to investigate the possible mechanism responsible for the decrease in force during the 5°/sec velocity compared to the isometric velocity. Subjects (n = 9) completed MVC knee extension exercises during eccentric speeds of 5, 10, and 15°/sec, as well as isometric contractions. Extensor force and average EMG (aEMG) of the vastus lateralis (VL) and biceps femoris (BF) were quantified at knee angles of 55° and 65°. Six ANOVA (alpha = 0.05) tests determined a decrease in FT (p < 0.05) at both knee angles and a decrease in VL aEMG (p < 0.05) at 55° during 5°/sec condition compared to the isometric condition. No change in BF aEMG was observed across speeds (p > 0.05). It was concluded that there is a controlling mechanism which is neurological in nature which reduces F T during slow eccentric conditions."]},{"key":"dc:format","label":"Dc Format","values":["pdf"]},{"key":"dc:title","label":"Title","values":["Muscle performance during slow isokinetic speeds"]}]}],"canonical_facts":{"dc:contributor":["John Mercer"],"dc:creator":["Kwantes, Jonathan Michael"],"dc:description.abstract":["The purpose of this study was to investigate the possible mechanism responsible for the decrease in force during the 5°/sec velocity compared to the isometric velocity. Subjects (n = 9) completed MVC knee extension exercises during eccentric speeds of 5, 10, and 15°/sec, as well as isometric contractions. Extensor force and average EMG (aEMG) of the vastus lateralis (VL) and biceps femoris (BF) were quantified at knee angles of 55° and 65°. Six ANOVA (alpha = 0.05) tests determined a decrease in FT (p < 0.05) at both knee angles and a decrease in VL aEMG (p < 0.05) at 55° during 5°/sec condition compared to the isometric condition. No change in BF aEMG was observed across speeds (p > 0.05). It was concluded that there is a controlling mechanism which is neurological in nature which reduces F T during slow eccentric conditions."],"dc:format":["pdf"],"dc:identifier":["10.25669/0n63-zptb","https://oasis.library.unlv.edu/rtds/1252","https://oasis.library.unlv.edu/context/rtds/article/2251/viewcontent/uc.pdf"],"dc:language":["English"],"dc:publisher":["University of Nevada, Las Vegas"],"dc:rights":["IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/"],"dc:title":["Muscle performance during slow isokinetic speeds"],"dc:type":["Text"],"thesis:degree_discipline":["Kinesiology"],"thesis:degree_level":["Thesis"],"thesis:degree_name":["Master of Science (MS)"]},"updated_at":"2026-07-24T05:25:18Z"}