Effect of 12-wk low intensity exercise with slow movement and tonic force generation: is it possible to improve the motor functions in older men?

To determine whether variation in resistance exercise affects muscle and motor functions (MF) response in elderly, in a randomized control trial, 19 community-dwelling men (65+/-4 yrs) assigned to 2 exercise groups. Progressive resistance trainings targeting the lower body on exercise machines were performed twice weekly for 12 weeks at low intensity (50% of one-repetition maximum) following each regimen: with slow movement and tonic force generation (LST group); with normal movement (LN group). Leg press power and MF (sit-to-stand time, Grip strength, Sit and reach, 1-leg balance, Walking speed) were measured before and after 12-wk intervention. Both low-intensity trainings are similarly improved Leg press power, and not sufficient to significantly enhance MF. 12-wk LST is not effective for optimizing MF in elderly.