I'm Aoi Hashima , an occupational therapist working in Saga Sumai and Fukuoka.
The other day, I saw a piece of news online that made me think, "This will be useful!"
I'm used to being vigilant about all kinds of things, so I read the news on the internet every morning and night.
When I put up my antenna almost every day, I see messages that I think are "good for you"!
Research on how fingers are used when turning a knob changes the number of fingers used depending on the size of the knob to receive an "Ig Nobel Prize" sent to unique scientific research, is news. 
Source: Asahi Shimbun
How many fingers do you use to turn the handle?
[New York Union News] The "Ig Nobel Prize" award ceremony for unique scientific research was held online on the 15th. Matsuzaki, a former professor at Chiba Institute of Technology, and his colleagues won the engineering award for studying how many fingers it takes to turn cylindrical handles and knobs with one hand.
association
jp.reuters.com
The number of fingers turning the knob changes with the diameter Professor Matsuzaki, Chiba Institute of Technology, Ig Nobel Prize: Asahi Shimbun Digital
Moto Matsuzaki of Chiba Institute of Technology, who studies how to turn knobs with his fingers, announced the "Ig Nobel Prize" on the 15th (16th Japan time) for his achievements that make people laugh and think. Professor (design) selected for "Engineering" award"
association
www.asahi.com
When we turn a bottle cap or doorknob, we measure it with our eyes, program the correct action in our mind, and issue the command to move.
Moto Matsuzaki, a professor at Chiba Institute of Technology, clarified the relationship between the thickness of the pinch and the number of fingers used.
Seeing this news gave me an epiphany for finger rehabilitation.
The idea is to use a tool with a diameter of 23 to 26 mm when you want to use three fingers, and a tool with a diameter of 45 to 50 mm when you want to use five fingers.
I'd be happy if you gave me a hint when considering the size of the tool to use, depending on how many fingers you're going to use when doing self-training.
☆*:.｡.Thank you for reading till the end.｡.:*☆
ーーーーーーーーーーーーーーーーーーーーーーー
This article was reprinted on September 18 , 2022 on Aoi Hashima's blog " Stroke Rehabilitation Longevity Consultation Center " .