Physical therapy
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In order to make inferences about strength related to development or treatment interventions, it is important to use measurement instruments that have sound clinimetric properties. ⋯ For measuring grip strength, the Jamar dynamometer is recommended. For other muscle groups, handheld dynamometry is recommended. Manual muscle testing (MMT) can be used in case of limited (below MMT grade 4) wrist strength or for total upper limb muscle strength. Based on lacking information regarding other clinimetric properties, caution is advised regarding interpretation of the results.