{"id":{"repo_id":"unlv","oai_identifier":"oai:oasis.library.unlv.edu:rtds-2260"},"canonical_url":"https://search.dev.ndltd.org/etd/unlv/oai:oasis.library.unlv.edu:rtds-2260","repository":{"repo_id":"unlv","name":"University of Nevada - Las Vegas","base_url":"https://oasis.library.unlv.edu/do/oai/"},"display":{"title":"The effect of surface compliance on the cost and benefit of performing drop-jumps","abstract":"The purpose of the study was to investigate the effect of surface compliance on the cost and benefit of performing drop jumps (DJ). The cost was quantified using peak ground reaction force (GRF) (FPEAK), time to peak GRF (TFPEAK) and loading rate (LR). The benefit was quantified using lower extremity stiffness (K) and amortization phase (AMORT). Ten female subjects performed five DJ trials each on a force plate (C1), turf surface (C2) and aerobics mat (C3). GRF and kinematic data were recorded concurrently at 1000 Hz and 200 Hz, respectively. Dependent variables were analyzed using a repeated measures ANOVA. FPEAK was different between C3 and C2 (p < 0.05). TFPEAK was different (p < 0.05) and LR was different (p 0.05). It was concluded that surface stiffness plays a role in the costs and benefits of performing a DJ.","abstract_html":"The purpose of the study was to investigate the effect of surface compliance on the cost and benefit of performing drop jumps (DJ). The cost was quantified using peak ground reaction force (GRF) (FPEAK), time to peak GRF (TFPEAK) and loading rate (LR). The benefit was quantified using lower extremity stiffness (K) and amortization phase (AMORT). Ten female subjects performed five DJ trials each on a force plate (C1), turf surface (C2) and aerobics mat (C3). GRF and kinematic data were recorded concurrently at 1000 Hz and 200 Hz, respectively. Dependent variables were analyzed using a repeated measures ANOVA. FPEAK was different between C3 and C2 (p &lt; 0.05). TFPEAK was different (p &lt; 0.05) and LR was different (p 0.05). It was concluded that surface stiffness plays a role in the costs and benefits of performing a DJ.","abstract_has_math":false,"creators":["Reid, Michele Nicole"],"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/1261"],"render_values":[{"text":"https://oasis.library.unlv.edu/rtds/1261","href":"https://oasis.library.unlv.edu/rtds/1261","code":true}]}]},"links":{"outbound_url":"https://doi.org/10.25669/u4jn-q9r7","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":["Reid, Michele Nicole"]}]},{"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/u4jn-q9r7","https://oasis.library.unlv.edu/rtds/1261","https://oasis.library.unlv.edu/context/rtds/article/2260/viewcontent/uc.pdf"]}]},{"id":"additional","label":"Additional Metadata","entries":[{"key":"dc:description.abstract","label":"Abstract","values":["The purpose of the study was to investigate the effect of surface compliance on the cost and benefit of performing drop jumps (DJ). The cost was quantified using peak ground reaction force (GRF) (FPEAK), time to peak GRF (TFPEAK) and loading rate (LR). The benefit was quantified using lower extremity stiffness (K) and amortization phase (AMORT). Ten female subjects performed five DJ trials each on a force plate (C1), turf surface (C2) and aerobics mat (C3). GRF and kinematic data were recorded concurrently at 1000 Hz and 200 Hz, respectively. Dependent variables were analyzed using a repeated measures ANOVA. FPEAK was different between C3 and C2 (p < 0.05). TFPEAK was different (p < 0.05) and LR was different (p 0.05). It was concluded that surface stiffness plays a role in the costs and benefits of performing a DJ."]},{"key":"dc:format","label":"Dc Format","values":["pdf"]},{"key":"dc:title","label":"Title","values":["The effect of surface compliance on the cost and benefit of performing drop-jumps"]}]}],"canonical_facts":{"dc:contributor":["John Mercer"],"dc:creator":["Reid, Michele Nicole"],"dc:description.abstract":["The purpose of the study was to investigate the effect of surface compliance on the cost and benefit of performing drop jumps (DJ). The cost was quantified using peak ground reaction force (GRF) (FPEAK), time to peak GRF (TFPEAK) and loading rate (LR). The benefit was quantified using lower extremity stiffness (K) and amortization phase (AMORT). Ten female subjects performed five DJ trials each on a force plate (C1), turf surface (C2) and aerobics mat (C3). GRF and kinematic data were recorded concurrently at 1000 Hz and 200 Hz, respectively. Dependent variables were analyzed using a repeated measures ANOVA. FPEAK was different between C3 and C2 (p < 0.05). TFPEAK was different (p < 0.05) and LR was different (p 0.05). It was concluded that surface stiffness plays a role in the costs and benefits of performing a DJ."],"dc:format":["pdf"],"dc:identifier":["10.25669/u4jn-q9r7","https://oasis.library.unlv.edu/rtds/1261","https://oasis.library.unlv.edu/context/rtds/article/2260/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":["The effect of surface compliance on the cost and benefit of performing drop-jumps"],"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"}