Predicting one repetition maximum using hand-held dynamometry

Isometric assessment of muscular function using a hand held dynamometer (HHD) is frequently used in clinic environments. However, there is controversy in terms of the validity of isometric assessment to monitor changes in dynamic performance. One repetition maximum (1RM) is considered the gold standard for evaluating dynamic strength, though clinician's do not often use 1RM testing, preferring to be cautious with clients who have pre-existing impairments. If strength testing using a HHD could be used to predict 1RM, this may have significant implications for the use of isometric testing to prescribe exercise in clinical environments.

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