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- W1993461826 abstract "Efficiency of movement (energy cost/kg body mass) is an important ingredient for athletic success. The athlete with the highest efficiency can use his/her saved energy for increased speed of movement or to move at the same speed at a decreased physiological demand. PURPOSE: The purpose of this study was to evaluate the energy cost of the Flex Run by Ossur prosthetic carbon fiber foot at multiple prosthetic stiffness's (PS) performed at anaerobic threshold (AnT). METHODS: 12 athletic subjects (7 male, 5 females, body mass 67.2 kg, ht 174 cm, max VO2 48.5 mL/kg-m [range 35-59.7]) with unilateral transtibial amputation performed a treadmill max VO2 speed protocol with increments of 14.3 m/min per 3 min stage to volitional exhaustion, while using their prescribed prosthetic carbon fiber foot stiffness. AnT occurred at 85% of max VO2 between 188-255 m/min. All subjects were fitted by the same prosthetist and randomly assigned three PS in a blinded cross over design protocol. Statistical analysis by ANOVA was applied to these data (p<.05). RESULTS: The following data were obtained at PS of 5, 6, and 7, respectively: stride count 92.6, 95.3 & 94.4 /m; energy cost 46.4, 46.6, & 46.6 mLO2/kg-m; HR 177, 177, & 178 b/m. No significant difference was noted among any PS trial. CONCLUSION: Although mean values fail to reveal an ideal PS for all subjects, small but possibly clinically significant differences in efficiency were noted within the same athlete. Individual testing, with at least five PS and at various speeds (i.e. AnT, 10K race pace, marathon race pace, etc.) is necessary to determine one's optimal race performance efficiency." @default.
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- W1993461826 date "2010-05-01" @default.
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- W1993461826 title "The Run Efficiency of Transtibial Amputee Athletes at Anaerobic Threshold" @default.
- W1993461826 doi "https://doi.org/10.1249/01.mss.0000384429.68495.57" @default.
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