The Jamar Hydraulic Hand Dynamometer

Jamar Hydraulic Hand Dynamometer

A hand dynamometer is a device used to measure grip strength. The Jamar hydraulic hand dynamometer is a widely used and well-validated tool for measuring grip strength. It is easy to use and can be administered by anyone with minimal training. The Jamar hydraulic hand dynamometer is a reliable and valid measure of grip strength.

The Jamar Hydraulic Handgrip Dynamometer is a tried and tested handgrip strength device that accurately and consistently measures maximal isometric handgrip strength as an important component of a clinical evaluation. The Jamar dynamometer system developed and used the first normative handgrip strength data by relying on digital load sensor technology and high-quality hydraulics to provide accurate and reliable measurements over multiple years of use.

Jamar Hydraulic Hand Dynamometer Coordinates in both precision and ease of use

For more than 45 years, the Jamar Hand Dynamometer has been the industry standard for grip strength data collection. Many states use Jamar as a testing tool for compensation determinations. A dual-scale reading shows an isometric force ranging from 0 to 200 pounds (90 kg). The needle for the quarter scale holds at its highest reading until reset, and the counter by hand can quickly and easily be adjusted to five grip positions, ranging from 1-3/8” – 3-3/8”, in half-inch increments.

The Benefits of the Jamar Hydraulic Hand Dynamometer

The Jamar Hand dynamometer is an excellent option for use in scientific studies because it offers reliable and durable grip test results. Regularly, the Jamar dynamometer produces grip strength outputs that are directly available and easily replicated.

• Accurate and verifiable results are achieved.
• Comfortable and steady hand grip.
• A handle that's adjustable to suit different hand sizes.
• Peak-hold needle holds the highest reading.
• Displays in pounds and kilograms.
• Quantifies Strength of Grip for Different Objects.

What are the Features of the Jamar Hydraulic Hand Dynamometer? 

• Measures isometric grip force and strength in rehabilitation and physical therapy programs.
• Ideal for a routine recording of strength and initial and ongoing evaluation of hand injury or dysfunction.
• A peak hold needle retains the highest reading of multiple readings until reset.
• Automatic calibrations of average grip strength and standard deviations are performed automatically.
• The shock-resistant cap which protects the stainless steel gauge from damage is combined with a wristband which protects the cable from sudden drops and unintentional shocks.
• The unique adjustable handle allows users to estimate their hand strength for different-sized objects based on five grip positions that range from 1.375" to 375".
• Dual scale readout measures isometric grip force in both pounds and kilograms, up to 200 lbs. or 90 kgs. with its highest needle that retains reading until reset.
• The unit comes with a carrying case, certificate of calibration, year of warranty, and complete instructions for hand strength and flexibility screening.

Jamar Hand Dynamometer Evaluation Tools

Hydraulic Dynamometers

 Jamar hydraulic dynamometers are the standard for evaluating grip and squeeze strength. Physical therapists, massage therapists, and other professionals can use a hand dynamometer to assess the patient's progress before and after treatments.

Smart and Plus+ Dynamometers

Digital Hand Dynamometers are an advanced tool for measuring hand strength. The Jamar Plus has a digital display for viewing the data more clearly. In addition to having a digital display, the Jamar Smart is also compatible with a free app that tracks progress and saves more data than ordinary hydraulic hand dynamometers.

Evaluation Kits

Evaluation kits include a hand dynamometer, a pinch gauge, and a finger goniometer. Use these instruments together for a complete hand evaluation. Measure the strength, range of motion, and pinch strength of any patient, and track their progress while undergoing therapy.

Professions and Settings that use Handgrip Dynamometers

1. Physical Therapists, Occupational Therapists, and Hand Therapists: To establish baseline strength measurements in the monitoring of rehabilitation progress in patients receiving treatment for hand and elbow injury and associated disability.
2. Medical Clinics and Research: A basic and easy-to-administer protocol to assess muscle strength across populations and in performing related research.
3. Geriatric Populations: Handgrip strength data may provide valuable information pertaining to muscle wasting progression and frailty in older individuals, relating to the design of medical interventions and its use for monitoring conditions.
4. Workforce: This tool can be used as a screening for the capability of and possible injury to the hands for careers in which frequent and intense handheld activity takes place. It may be used to measure compensation for work-related injuries.
5. Educational: The measurement of handgrip strength can be used to demonstrate various kinesiology principles and train posture and bodily positioning through demonstration.

How to use Jamar Hand Dynamometer?

• Be sure that the adjustable handle is located in the correct position, making sure that the knob is at the lower level of the instrument. If you do not place the handle in the right position, inaccurate readings will occur.
• Turn the peak-hold knob counterclockwise until it hits zero.
• Using the safety strap helps ensure the ongoing accuracy of the Hydraulic Hand Dynamometer by reducing the chance of dropping and damaging the device. Allow the patient to set up the tool in a way that he or she can comfortably hold the device. Request the patient squeeze with maximum force. The peak-hold needle will automatically record the highest force exerted.
• Show the Hydraulic Hand Dynamometer's reading to the patient after the patient has used it.
• Reset the peak-hold needle to zero before recording new readings.

Recommended Standard Procedures for using the Jamar Hydraulic Hand Dynamometer:

• Make sure the affected patient's body is as comfortable as possible before proceeding. The shoulder should be adducted and rotated into an essentially neutral position. The elbow should be bent to 90 degrees and should be flexed to a minimal degree. The forearm and wrist should be in a neutral position.
• Place the Jamar Hydraulic Hand Dynamometer in the injured person's hand. Use the wrist safety strap and lock the base plate securely to prevent unintentional dropping.
• Grip force should be applied smoothly, without abrupt pulling or jerking motion. 0 to 30 degrees’ wrist extension is acceptable so long as it transitions smoothly between grip levels. Modifications in the hand position other than the extension range or beyond 30 degrees should be noted in the graph.

Use and Care Instructions

1. Set the spacing from the knob to the corresponding adjustment value. If the knob is not placed in the proper position, the readings will not be accurate.
2. Turn the red peak-hold dial counterclockwise to zero.
3. Let the patient comfortably position the instrument in their hand. Have the patient squeeze with maximum strength. The peak-hold needle automatically records the strongest grip.
4. Record the reading and Reset the peak hold value to zero for future recording.
5. Extreme temperature changes during delivery may cause the gauge needle to actuate slightly out of zero. If this is the case, utilize these steps so you can reposition the gauge needle.
6. Unscrew the crystal until you get the screw that firmly holds the meter needle.
7. Hold the needle between the thumb and forefinger.
8. Using a screwdriver, use the screwdriver to turn the screw clockwise to lower or counterclockwise to raise the needle.
9. Examine the needle to see if it's bent before replacing the crystal.
10. Be sure to keep the dynamometer at room temperature whenever not in use.

The Jamar hand dynamometer remains one of the medical industry's leading choices for grip strength testing because the results it provides are trustworthy and dependable. From medical and rehabilitative applications to work-related studies and assessments, look no further than the Jamar hydraulic dynamometer for grip strength results you can count on.

In conclusion, the Jamar hand dynamometer is a great tool for those looking to measure their grip strength. It is available at Pro Therapy Supplies and is easy to use. Give it a try today!