A brief contraction has complex effects on summation of twitch pairs in human adductor pollicis

  title={A brief contraction has complex effects on summation of twitch pairs in human adductor pollicis},
  author={Ian C. Smith and Helen Adam and Walter Herzog},
  journal={Experimental Physiology},
  pages={676 - 689}
What is the central question of this study? How do contraction‐induced reductions in twitch duration, without changes in twitch force, affect summation of twitch pairs into higher force contractions in skeletal muscle? What is the main finding and its importance? Abbreviating twitch duration with a brief contraction resulted in enhanced summation of fully fused twitch pairs, but impaired summation in partially fused twitch pairs even after accounting for the differences in relaxation of the… 
1 Citations

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  • W. Herzog
  • Biology
    Journal of applied physiology
  • 2014
The proposed mechanism for residual force enhancement explains all basic findings in this area of research and is based on the engagement of the structural protein titin upon muscle activation and an increase in titin's resistance to active compared with passive stretching.