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<p>This study assesses the Sit-To-Stand (STS) power across different age groups, and revises the biomechanical basis of existing power equations. Cross-sectional data from 159 Argentinian individuals (18 to 90 years) were analyzed, including 5 repetitions STS, ultrasonography, handgrip and leg press tests. Regression analysis and statistical hypothesis tests where used to find correlations and differences within obtained data. A large correlation (<InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(r=0.976\)</EquationSource> </InlineEquation>) was observed between average power and root mean squared (RMS) power, suggesting that existing mean power equations are clinically sufficient, as inertial effects are negligible. STS power peaked at approximately (<InlineEquation ID="IEq2"> <EquationSource Format="TEX">\(36\pm 15\)</EquationSource> </InlineEquation>) years, followed by a decline. The strongest correlations were found for peak leg press force (<InlineEquation ID="IEq3"> <EquationSource Format="TEX">\(r=0.678\)</EquationSource> </InlineEquation>) and leg press rate of force development (<InlineEquation ID="IEq4"> <EquationSource Format="TEX">\(r=0.691\)</EquationSource> </InlineEquation>). STS power correlated significantly with handgrip strength but not with the echogenicity index, highlighting the clinical relevance of separately evaluating each of these indicators.</p>

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The STS test and its correlation with common clinical indicators for an Argentinian population sample

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年1月19日

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  • Leonardo Intelangelo,
  • Agustín Peñalba,
  • Gonzalo Arcuri,
  • Daniel Jerez-Mayorga,
  • Gastón Alonso

摘要

This study assesses the Sit-To-Stand (STS) power across different age groups, and revises the biomechanical basis of existing power equations. Cross-sectional data from 159 Argentinian individuals (18 to 90 years) were analyzed, including 5 repetitions STS, ultrasonography, handgrip and leg press tests. Regression analysis and statistical hypothesis tests where used to find correlations and differences within obtained data. A large correlation ( \(r=0.976\) ) was observed between average power and root mean squared (RMS) power, suggesting that existing mean power equations are clinically sufficient, as inertial effects are negligible. STS power peaked at approximately ( \(36\pm 15\) ) years, followed by a decline. The strongest correlations were found for peak leg press force ( \(r=0.678\) ) and leg press rate of force development ( \(r=0.691\) ). STS power correlated significantly with handgrip strength but not with the echogenicity index, highlighting the clinical relevance of separately evaluating each of these indicators.