Hand grip dynamometers measure hand strength and grip ability. There are three types: hydraulic, pneumatic, and Myogrip strain gauge. They are primarily used in healthcare for assessment and rehabilitation, but are also used by the public for measuring and increasing grip strength. The JAMAR is the most accurate and versatile model.
A hand grip dynamometer is an instrument used to measure the strength and grip ability of a person’s hand. While styles and manufacturers vary, there are three basic types of dynamometer, namely a hydraulic dynamometer, a pneumatic dynamometer, and a Myogrip strain gauge dynamometer. Each of these dynamometers is used primarily in the healthcare industry to assist in the assessment and rehabilitation of patients for hand motion and strength.
One of the most common types of hydraulic dynamometers is called a JAMAR dynamometer. This tool generally has a curved metal or plastic handle that a person holds and squeezes. The handle itself does not normally move, but a hydraulic mechanism measures the pressure exerted by the handle, which is then displayed on an indicator on the top of the tool. Some models do not use a gauge but instead have a digital display. The JAMAR chassis dynamometer is considered one of the most accurate and reliable models in the industry.
Another type of force gauge is known as a pneumatic hand force gauge. This type of grip force gauge uses a rubber compression ball on the end of a tube. The patient squeezes the ball and the force exerted is then measured by a gauge at the other end of the tube. Models using digital displays are also available for this type of dynamometer. The most commonly used pneumatic force gauge is called the Martin Force Gauge and is regarded by many healthcare facilities for its ease of use and accuracy.
The Myogrip force gauge is a type of grip force gauge that uses a strain gauge. This type of force gauge is smaller than the JAMAR or Martin force gauge. It is also much more sensitive and is mainly used with patients who are frail, weak or have very little grip strength.
Regardless of the type of grip dynamometer, most will measure grip strength up to 200 lbs (about 90 kg). Each force gauge can be used in different ways to conduct a variety of different tests, each measuring a different capacity. The most versatile chassis dynamometer in this sense is the JAMAR, or hydraulic dynamometer. While primarily used in the medical field, hydraulic and pneumatic grip dynamometers are available to the public and are used by people interested in measuring and increasing grip strength for professional or other reasons. By its nature, the Myogrip force gauge is used almost exclusively in the healthcare sector.
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