The effect of surface compliance on the cost and benefit of performing drop-jumps

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.

Name thesis:degree_name

Master of Science (MS)

Level thesis:degree_level

Thesis

Discipline thesis:degree_discipline

Kinesiology

Grantor dc:publisher

University of Nevada, Las Vegas

Year

2001

Author dc:creator

• Reid, Michele Nicole

Contributors dc:contributor

• John Mercer

Statement dc:rights

• IN COPYRIGHT. For more information about this rights statement, please visit http://rightsstatements.org/vocab/InC/1.0/

Language dc:language

English

Identifier

https://oasis.library.unlv.edu/rtds/1261

OAI identifier oai:identifier

oai:oasis.library.unlv.edu:rtds-2260