The Jamar® dynamometer has well-established validity and reliability 5 and has emerged as the gold standard among clinicians, particularly hand therapists when compared to other hand dynamometers. 1, ...

Correspondence to: Yumiko Kanauchi, Department of Rehabilitation, Yamagata City Hospital Saiseikan, Nanukamachi 1-3-26, Yamagata 990-8533, Japan. Tel: +81-23-625-5555.

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