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Hand Grip Force-Time Curve Indicators Evaluated by Dynamometer: A Systematic Review.

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Exploring handgrip strength (HGS) beyond maximum force reveals new indicators from the force-time curve. These metrics offer a more comprehensive assessment of muscle function for various applications.

Keywords:
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Area of Science:

  • Biomechanics
  • Musculoskeletal Physiology

Background:

  • Handgrip strength (HGS) is a key indicator of muscular strength, vital for diagnosing conditions like sarcopenia and physical frailty.
  • Current assessments typically rely on maximum HGS, but new evidence highlights the potential of force-time curve analysis for deeper insights into muscle function.

Approach:

  • A systematic review was conducted, analyzing studies that measured HGS using digital or adapted dynamometers.
  • The review focused on identifying and cataloging HGS profile indicators derived from the force-time curve.

Key Points:

  • Fifteen studies were included in the review.
  • Identified indicators include grip fatigue, fatigability index, time to maximum value, release rate, power factor, grip work, and endurance, among others.
  • These indicators provide a more nuanced understanding of muscle performance beyond peak force.

Conclusions:

  • Digital and adapted dynamometers can effectively measure various HGS force-time curve indicators.
  • Further research is needed to standardize evaluation procedures, understand clinical relevance, and clarify the implications of these indicators in clinical practice.