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dc.contributor.advisorHurley, Ben F.en_US
dc.contributor.authorDoldo, Neilen_US
dc.date.accessioned2005-08-03T13:12:28Z
dc.date.available2005-08-03T13:12:28Z
dc.date.issued2005-01-11en_US
dc.identifier.urihttp://hdl.handle.net/1903/2331
dc.description.abstractTo determine sex and race differences in strength, muscle power, movement velocity, and functional ability, knee extensor strength and muscle power normalized for muscle volume was measured in 79 middle-aged and older adults (30 men and 49 women, age range 50-85 yrs). Results indicated that men had 55% greater muscle volume (MV; P < 0.001), 24% greater 1 RM strength (P < 0.01), 9% greater muscle quality (MQ; 1 RM/MV; P < 0.05), 26% greater peak muscle power (PP; P < 0.01), and 14% greater MPQ (PP/MV; P < 0.001) than women. However, women displayed a 38% faster peak movement velocity than men when expressed per unit of muscle (movement velocity quality) (PV/MV; P < 0.001). Race analysis showed that African Americans had 20% greater MV than Caucasians (P < 0.001), but 11% lower MQ (P < 0.01) and a 17% lower PV/MV (P < 0.05) than Caucasians of similar age. Men displayed a 22% faster stair climb time than women, while Caucasians exhibited 19% and 16% faster times in rapid pace gait and 8-ft up-and-go, respectively. Thus, despite greater strength and power per unit of muscle in men, women have a faster knee movement velocity per unit of muscle than men. Moreover, African Americans have greater knee extensor muscle volume than Caucasians, but exhibit lower muscle quality and movement velocity quality.en_US
dc.format.extent655543 bytes
dc.format.mimetypeapplication/pdf
dc.language.isoen_US
dc.titleRacial and sex differences in strength, peak power, movement velocity, and functional ability in middle aged and older adultsen_US
dc.typeThesisen_US
dc.contributor.publisherDigital Repository at the University of Marylanden_US
dc.contributor.publisherUniversity of Maryland (College Park, Md.)en_US
dc.contributor.departmentKinesiologyen_US
dc.subject.pqcontrolledHealth Sciences, Generalen_US


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