1. Introduction
In daily life, people must often perform motor and cognitive tasks at same time, such as shopping, counting coins while queuing up, or walking while answering a mobile phone call. Poor dual-task performance can greatly impact activities of daily life [EF continues to change throughout life [Aerobic exercise is a good non-pharmacological means of improving EF [Motor-cognitive dual-tasks might be more effective than single-domain tasks as a way to improve executive function because dual tasks have been reported to use greater cognitive resources than the same tasks done separately (aerobic exercise or cognitive training alone) [