The change could be the result of continued evolutionary pressure from selective breeding, or it could reflect a shift in the focus of British breeders who might value sprint speed over marathon speed. (sciencemag.org)
You earn cards by completing challenges and range from having a powerful gun to giving you faster sprint speed. (thatvideogameblog.com)
By increasing flexibility, an athlete's personal sprint speed, power, and strength can be optimized. (blog.bridgeathletic.com)