Grip strength - acupuncture

Japanese: 握力 - あくりょく
Grip strength - acupuncture

It is the strength of gripping something with the hand. In physical fitness tests, it is used along with back strength as an index of muscle strength. Generally, active grip strength, or how strongly one can grip something, is measured two or three times using a grip strength meter. When measuring, the flexor muscles extending from the arm are contracted. When measured repeatedly, some people's grip strength decreases after a few measurements, while others do not. Those with high maximum muscle strength are not necessarily able to maintain high values ​​continuously. Also, some people have a large difference in grip strength between their left and right hands, while others have a small difference. This is influenced by how they exert their grip strength in daily life. In contrast to active grip strength, which is continuous clenching, there is passive grip strength. This is measured by applying force to extend the fingers of the gripping hand or to open the palm, and how much they can withstand. Passive grip strength is the force exerted when hanging from an iron bar, etc., and is greater than active grip strength, but the correlation between the two is not very high.

[Ono Mitsutsugu]

Grip strength gauge

The most commonly used device for measuring grip strength is the Smedley dynamometer, which is used to measure active grip strength. When measuring, the grip width is adjusted so that the second joint of the index finger is at a right angle, and the subject is in an upright position, gripping the hand tightly without swinging or jumping. The needle that moves in this way indicates grip strength. During measurement, due to the nature of the device, which converts the mechanical force applied to a spring from the hand into kilograms and expresses it, it is important to adjust the dynamometer so that the reading it indicates is accurate in order to obtain an accurate value.

[Ono Mitsutsugu]

[Reference] | Physical fitness test | Grab

Source: Shogakukan Encyclopedia Nipponica About Encyclopedia Nipponica Information | Legend

Japanese:

手で物を握る力のこと。体力測定の際、筋力の指標として背筋力などとともに用いられる。一般的には、どれだけ強く握れるかという能動的握力を、握力計を使って、2~3回測定している。測定時には、腕から伸びている屈筋群が収縮している。連続して測定すると、人によって数回のうちに握力が低下する者と、低下しにくい者とがあり、最大筋力の大きい者が、かならずしも高い値を連続して維持できるとは限らない。また、左右の手で握力差が大きい者と小さい者とがある。これらは日常生活において、どのように握力を発揮しているかに影響される。継続的に握り締める能動的握力に対して、受動的握力がある。これは、握った手の指を伸ばそうとする、あるいは手のひらを開かせようとする力をかけて、どこまで耐えられるかを測定する。鉄棒などにつかまってぶら下がったりするときに発揮される力が受動的握力で、能動的握力よりも大きいが、両者間の相関はそれほど高くない。

[小野三嗣]

握力計

握力測定の器具で、一般的に使われているのは、能動的握力を測定するのに用いられるスメドレー式握力計である。測定時には、グリップの幅を調節して人差し指の第二関節が直角になるようにし、立位姿勢をとり、振り回したり跳びはねたりしないようにして握り締める。これによって移動した針の目盛りが握力である。測定に際しては、手からばねに加えられる機械的な力をキログラム単位に置き換えて表す器具の性質上、正確な値を得るためには、握力計の示す値が正確であるよう調節しておくことがたいせつである。

[小野三嗣]

[参照項目] | 体力測定 | つかむ

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