Strength training isolated and in dual-task: randomized clinical trial of effects on physical and functional performance in older women

Abstract

This study investigated the effects of isolated muscle strength training and combined with dual-task activities on the physical and functional performance of 50 older women. Participants were allocated into a control group, strength training group, and dual-task group. The tests included chair sit-to-stand, elbow flexion, handgrip strength, forward reach, backward reach, Timed Up and Go, gait speed, and two-minute stationary walk. Interventions were conducted twice a week for nine weeks. Data were analysed using the descriptive and inferential statistic (p<0.05). An interaction effect between group and time was observed in the backward reach and chair sit-to-stand tests (p<0.001), with increased results in the experimental groups. Time and interaction effects between group and time were observed in the two-minute stationary walk test in the experimental groups (p<0.001). Both isolated muscle strength training and strength training combined with cognitive activities were practical in promoting physical and functional improvements in older women.