To examine the effects of 12 weeks of high-speed resistance training ( RT ) versus low-speed RT on muscle strength [ one repetition of maximum leg-press ( 1RMLP ) and bench-press ( 1RMBP ) , plus dominant ( HGd ) and non-dominant maximum isometric handgrip ] , power [ counter-movement jump ( CMJ ) , ball throwing ( BT ) and 10-m walking sprint ( S10 ) ] , functional performance [ 8-foot up-and-go test ( UG ) and sit-to-stand test ( STS ) ] , and perceived quality of life in older women .