2.1. Subjects

A summary of subject general characteristics is provided in Table 1. Of the 23 study subjects, 11 were assigned to the old group (6 males, 5 females; mean age 63.36 ± 4.25 years) and 12 to the young group (7 males, 5 females; mean age 28.42 ± 4.40 years). The subjects were recruited for this study at Yeungnam University Hospital. The study inclusion criteria were as follows: (1) no history of musculoskeletal or neurologic disease or cognitive problem and (2) no medical problem associated with the vestibular system. All subjects provided informed consent before undergoing DTI. DTI and balance ability assessments, which were performed after DTI, were conducted from 1 January 2019 to 1 March 2019. The study was approved beforehand by the institutional review board of Yeungnam University Hospital (YUH-18-05-028).

Demographic data of the young and old healthy adults.

Values represent mean (±standard deviation).