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Audi wrote:I also understand that the index finger and little finger combine, sort of like a Yin-Yang pair to swivel the sword grip in the palm, with the thumb, middle, and ring finger helping to hold the pivot center. This action allows the contact with the palm to act like an additional joint to provide greater flexibility beyond what the wrist alone can provide.
Bob Ashmore wrote:The video zooms in on his hand and shows very clearly how he's holding the sword and he very clearly states how the fingers and thumb grasp the hilts; where on the hilt to grasp and which fingers are used both for grasping and controlling (he holds up his extended thumb, forefinger and middle finger) and which are used mostly for controlling the blade direction (the other two fingers, clearly indicating ring and pinky fingers).
He also clearly states how firmly to grasp the handle; "flexible, light and not too stiff".
Bob Ashmore wrote:The point of balance is about three and a hair inches up the blade
The middle finger is seen to be the pivotal digit in that it serves the needs of both precision and strength. Normally, it supports the index digit in matters of precision, but if need be it alone can assume the role as the only finger of precision. When its special ability of precision is not required, its great size and strength contribute a considerable portion of the gripping power provided by the medial side of the hand.
Precision prehension of the hand involves the thumb, index, and middle fingers. Prehension by these three digits is derived through the median nerve which supplies the extrinsic superficialis muscles, profundus muscles, and the flexor pollicis longus. In addition the same nerve supplies the lumbricals of the index and middle fingers and the positioning muscles of the thumb, the opponens, and the palmar abductor. The median nerve also supplies the tactile surfaces of the three digits.
In contrast to precision prehension, grip strength of the hand is primarily an ulnar nerve function and is obtained through the medial three digits and the thumb. The extrinsic profundus muscles of the ring and little fingers as well as their intrinsic muscles are supplied by the ulnar nerve. The tactile sense of the little finger and the medial half of the ring finger are also of ulnar nerve origin. In grip strength, the adductor of the thumb provides the power of contra force, and it too is supplied by the ulnar nerve.
The hand that holds the sword must be relaxed and flexible. You must not grasp with all five fingers too tightly, for that would be a hindrance to using the sword in a lively way. You need only grip it with your thumb, middle finger, and ring finger. Your forefinger and little finger should be constantly loose. There should be an emptiness in the palm so that it is like holding a writing brush.
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