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Nowadays more and more people,especially the elders,spend lots of time on watching TV.
Just pinching it,this slight action helps the elders
exercise thier wrist muscles in order to prevent muscle atrophy,and at the same time it can save power for being used.
National Cheng Kung University
Tainan, Taiwan
National Cheng Kung University
Tainan, Taiwan
Lian Ya Lin
Jian-Hong Shih
Kuo Ping Chang