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Isometric exercise device
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<p>An isometric exercise device is a device used to exercise most body parts including the <a href="/facts/Wrist/scSMl0zG">wrist</a> and is often used as part of <a href="/facts/Physical_therapy/q24XDqHF">physical therapy</a> or in order to build muscle strength in a low impact manner. Devices can range in size from large bulky machines used by physicians to small hand-held devices that can be used by an individual. Isometric devices have been used for centuries. The first devices did not display the users' output; nowadays there are devices that can digitally output the users force. Before that some devices used an analog format. </p>