Reliability of hand-held dynamometry in spinal muscular atrophy

Luciano Merlini, Elena Stacy Mazzone, Alessandra Solari, Lucia Morandi

Research output: Contribution to journalArticlepeer-review


We have assessed the reliability of hand-held myometry in 33 patients with spinal muscular atrophy (SMA), testing elbow flexion, handgrip, three-point pinch, knee flexion, knee extension, and foot dorsiflexion, and determining intraclass correlation coefficients (ICC). Interrater reliability was high for upper limbs, with an ICC of 0.92 for three-point pinch and 0.98 for elbow flexion and grip. For lower limbs interrater reliability was good with ICC >0.85 for all measures except foot dorsiflexion. Test-retest results were excellent with ICC >0.91 in all instances. Hand-held myometry is easily performed in SMA patients of various ages and muscle strengths, is a reliable measure of limb muscle strength, and can be used in longitudinal studies and clinical trials.

Original languageEnglish
Pages (from-to)64-70
Number of pages7
JournalMuscle and Nerve
Issue number1
Publication statusPublished - 2002


  • Clinical trial
  • Hand-held myometry
  • Maximal voluntary isometric contraction
  • Reliability
  • Spinal muscular atrophy

ASJC Scopus subject areas

  • Clinical Neurology
  • Neuroscience(all)


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