The participants of GMG received motor-cognitive dual-task training. The sensors used by the participants were four different colored buttons. The participants wear a suit with two buttons on the shoulders and the other two fasten on the knees by velcros. To accomplish the tasks, the participants had to slap the correct colored buttons. The stretching of upper or lower limbs was demanding while slapping, so the participants of GMG received a training which required cognitive and motor functions at the same time.

The participants attended 2 sessions per week and lasted for 4 weeks. Each session lasted 75 minutes, mainly including 30 minutes for game introduction and warm-up, 30 minutes for game training, and 15 minutes for rest during the training. Each task lasted 10 minutes, and each session contained 3 tasks. The game difficulty could be adjusted automatically according to the performance of participants.

The participants of FMG received cognitive training only. Four colored sensors used by the participants were the keys on the keyboard of the laptop. The participants simply pressed correct colored keys by fingers to complete the tasks.

The participants attended 2 sessions per week and lasted for 4 weeks. Each session lasted 75 minutes, mainly including 30 minutes for game introduction and warm-up, 30 minutes for game training, and 15 minutes for rest during the training. Each task lasted 10 minutes, and each session contained 3 tasks. The game difficulty could be adjusted automatically according to the performance of participants.

First task was short-term memory training. Participants were instructed to memorize different colored circles with ordinal numbers which would disappear later. They triggered correct colored sensor in sequence according to their memory.

Second task was divided attention training. Different colored circles with ordinal numbers would not disappear this time.The participants should trigger correct colored sensor according to their sequence.

Third task was inhibitory function training. There were red and green lights, just like the traffic light, hung up at the upper left of the scene. Red light represented prohibition of triggering the colored sensor, while green light urged to trigger it. Yellow, red, blue and green circles showed up randomly and moved toward the beige region. When the circle came extremely closer to the beige region, the traffic light was randomized to lighten up red or green.The participants should judge and trigger the correct colored sensor.

overall cognitive function

short-term memory

divided attention

inhibitory function

motor function of upper limbs

motor function of lower limbs and balance

motor function of lower limbs and balance

Game assessment was a new way to evaluate cognitive performance of the participant through the score. All participants proceeded all three scenarios but challenged same degree of difficulty.