Výsledky vyhledávání - "Samuel F. Ray"

Akademický článek

Prosthetic energy return during walking increases after 3 weeks of adaptation to a new device

Autor: Samuel F. Ray, Shane R. Wurdeman, Kota Z. Takahashi

Publikováno v: Journal of NeuroEngineering and Rehabilitation, Vol 15, Iss 1, Pp 1-8 (2018)

Abstract Background There are many studies that have investigated biomechanical differences among prosthetic feet, but not changes due to adaptation over time. There is a need for objective measures to quantify the process of adaptation for individua

Externí odkaz: https://doaj.org/article/792adc7bfc3a402c8916102e4c95040c

Zobrazit plný text záznamu

Plný text ve formátu HTML

Does human foot anthropometry relate to plantar flexor fascicle mechanics and metabolic energy cost across various walking speeds?

Autor: Nikolaos Papachatzis, Samuel F. Ray, Kota Z. Takahashi

Publikováno v: Journal of Experimental Biology. 226

Foot structures define the leverage in which the ankle muscles push off against the ground during locomotion. While prior studies have indicated that inter-individual variation in anthropometry (e.g. heel and hallux lengths) can directly affect force

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::1689d3376ac1cd9bd0bf2b7529c326a4
https://doi.org/10.1242/jeb.245113

Zobrazit plný text záznamu

Akademický článek

Mechanical and dynamic characterization of prosthetic feet for high activity users during weighted and unweighted walking.

Autor: Sara R Koehler-McNicholas, Eric A Nickel, Kyle Barrons, Kathryn E Blaharski, Clifford A Dellamano, Samuel F Ray, Barri L Schnall, Brad D Hendershot, Andrew H Hansen

Publikováno v: PLoS ONE, Vol 13, Iss 9, p e0202884 (2018)

Many Service members and Veterans with lower-limb amputations have the potential for high function and the desire to resume physically demanding occupations that require them to carry heavy loads (e.g., military service, firefighters, farmers, ranche

Externí odkaz: https://doaj.org/article/28a358ea80634f22a56db82cbcb2b6c3

Zobrazit plný text záznamu

Plný text ve formátu HTML

Gearing Up the Human Ankle-Foot System to Reduce Energy Cost of Fast Walking

Autor: Samuel F. Ray, Kota Z. Takahashi

Publikováno v: Scientific Reports
Scientific Reports, Vol 10, Iss 1, Pp 1-12 (2020)

During locomotion, the human ankle-foot system dynamically alters its gearing, or leverage of the ankle joint on the ground. Shifting ankle-foot gearing regulates speed of plantarflexor (i.e., calf muscle) contraction, which influences economy of for

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::f64f655f534e78027af3a299843058a0
https://doi.org/10.1038/s41598-020-65626-5

Zobrazit plný text záznamu

A more compliant prosthetic foot better accommodates added load while walking among Servicemembers with transtibial limb loss

Autor: Barri L. Schnall, Samuel F. Ray, Jonathan M. Elrod, Brad D. Hendershot, Pawel R. Golyski, Sara R. Koehler-McNicholas, Andrew H. Hansen, Christopher L. Dearth

Publikováno v: Journal of biomechanics. 98

Selecting an optimal prosthetic foot is particularly challenging for highly active individuals with limb loss, such as military personnel, who need to seamlessly perform a variety of demanding activities/tasks (often with and without external loads)

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::351d5d8b731ef08d6a6b7780201c4165
https://pubmed.ncbi.nlm.nih.gov/31668413

Zobrazit plný text záznamu

Effects of age and locomotor demand on foot mechanics during walking

Autor: Rebecca L. Krupenevich, Kota Z. Takahashi, Howard E. Kashefsky, Samuel F. Ray, William H. Clark, Jason R. Franz

Publikováno v: J Biomech

Older adults exhibit reductions in push-off power that are often attributed to deficits in plantarflexor force-generating capacity. However, growing evidence suggests that the foot may also contribute to push-off power during walking. Thus, age-relat

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b6f1934989d82d09557354a75b612419
https://doi.org/10.1016/j.jbiomech.2021.110499

Zobrazit plný text záznamu