%0 Journal Article %T The effect of the inclusion of trunk-strengthening exercises to a multimodal exercise program on physical activity levels and psychological functioning in older adults: secondary data analysis of a randomized controlled trial %A Shahtahmassebi, Behnaz %A Jacinta Hatton %A Jeffrey J. Hebert %A Mark Hecimovich %A Helen Correia %A Timothy J. Fairchild %J BMC geriatrics %@ 1471-2318 %D 2022