The proactive transfer effect refers to the phenomenon that a previously learned motor skill influences the performance of subsequent similar motor skills. The retroactive transfer effect is a reverse phenomenon that subsequently learned motor skill influences the performance of the previous motor skill (Hanseeuw et al., 2012). Age-related differences have been well studied in terms of executive functions (particularly inhibitory control and working memory) (Murphy et al., 2007) and fine motor skills such as typing, grasping, or assembly tasks (Verneau et al., 2015) but not in gross motor skills such as gait. In the current study, we aim to examine transfer effects related to aging and the number of repetitions in a specific gross motor skill i.e., voluntary gait adaptability.