IntroductionPostural control becomes increasingly critical with aging.1 The negative effect of age on balance stability is dependent on sen- sorimotor dysfunctions,2 muscle weakness,3 and structural changes in brain grey and white matter.4 Evidence from other studies sug- gests that, despite the previously mentioned neural deficits, older adults may recruit additional neural resources to reach sufficient level of sensorimotor control by increasing attention to the task.5 Since accessibility of attentional resources and the ability to allocate attention efficiently is declining with aging,6 the distribution of attentional resources toward a secondary cognitive task is expected to have a larger interference effect on balance in older adults compared with young adults.7 This makes dual-task testing a sensitive predictor of age-or pathology-associated declines in bal- ance control.8Impaired behavior may appear particularly in complex tasks,9 such as performing a dual-task, where cognitive functioning is usually involved as well. Normal aging is associated with progres- sive functional loss in many cognitive domains including working memory, attention10 and executive functions11,35 responsible for the control of behavioral activities.12However, scientists argue that physical activity can be beneficial for old adults’ physical and mental health.13 It has been proven that resistance training increases muscular mass and strength in seniors and might positively influence cognitive performance.14 Neverthe-