Effects of Wearable Sensor-based Interactive Cognitive-motor Training in Older Adults.

Activation of the prefrontal cortex will be assessed by changes in HbO, and differences in PFC activity will be identified during cognitive tasks (memory, attention, and visuospatial cognition) before and after the assessment.

For cognitive assessment, we will use the Montreal Cognitive Assessment (MoCA). The MoCA is a cognitive assessment tool used to identify MCI that assesses multiple cognitive domains, including memory, attention, language, visuospatial skills, executive function, and orientation to time and place.

Aerobic capacity is measured using the 6-minute walk test (6MWT). The 6MWT measures the distance a subject can walk in six minutes. You can take as many breaks as you like and the examiner can provide a chair. The examiner records the distance you walk in six minutes, the number of breaks you take, and the duration of the breaks.

The Four Square Step Test (FSST) is used to assess dynamic balance ability. The FSST consists of stepping safely and as quickly as possible, without touching the sticks, over four sticks placed in a criss-cross configuration on the floor, and is scored by recording the time in seconds.

Dynamic balance is assessed using the Functional Reach Test (FRT). The FRT measures the distance (in centimeters) that the head of the third metacarpal of the hand moves by extending the arm forward without moving the foot from a standing position.

To assess static balance, using the Single Leg Stance Test (SLS). The SLS measures the number of seconds standing on one leg with hands on hips and eyes open.

Upper extremity strength is assessed with the arm curl test. On women perform a biceps curl with a 2.3 kg dumbbell and men with a 3.6 kg dumbbell. They are seated in a chair with no armrests or backrest. Scoring is based on the number of repetitions performed in 30 seconds.

Grip strength is measured using a dynamometer and the subject is seated in a chair with arms extended, natural rotation, elbow flexed 90 degrees, forearm at natural angle and wrist in dorsiflexion between 0 and 30 degrees. The subject is then asked to grip the dynamometer for 3 seconds and the average value (kg) over 3 trials is recorded.

Lower extremity strength is assessed using the 5 sit to stand test (5xSST). The 5xSST measures the number of seconds a subject can go from sitting to standing and back to sitting five times, with the shorter the time, the better the strength.

IADLs require higher cognitive skills than basic activities of daily living, and IADLs can detect functional changes in the early stages of dementia. Instrumental IADLs are assessed using the Functional Activities Questionnaire (FAQ). The FAQ can differentiate between Mild cognitive impairment(MCI) and mild Alzheimer's disease(AD).