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Does load uncertainty affect adaptation to catch training?

William P Berg1, Brian J Richards2, Aaron M Hannigan3

  • 1Department of Kinesiology and Health, Miami University, 202G Phillips Hall, Oxford, OH, 45056, USA. bergwp@miamioh.edu.

Experimental Brain Research
|May 25, 2016
PubMed
Summary
This summary is machine-generated.

Knowledge of load improved reaction and movement times in catching. Load uncertainty training did not enhance these benefits and hindered neuromotor effort reallocation for anticipatory control.

Keywords:
Anticipatory controlCatchingCompensatory controlLoad knowledgeLoad uncertaintyPlyometric training

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Area of Science:

  • Biomechanics
  • Motor Control
  • Sports Science

Background:

  • Catching involves anticipatory and compensatory neuromotor control.
  • Load uncertainty during catching increases neuromotor effort.

Purpose of the Study:

  • To investigate the effects of load knowledge versus load uncertainty in plyometric catch/throw training on elbow flexion.
  • To examine changes in reaction time (RT), movement time (MT), peak torque, and neuromotor effort distribution.

Main Methods:

  • Three groups of men (n=41) underwent 6 weeks of plyometric catch/throw training.
  • Training involved random 0.45-4.08 kg ball masses.
  • Group K (knowledge) knew ball mass each repetition; Group U (uncertainty) did not; Group C (control) received no training.

Main Results:

  • Group K showed significant improvements in RT (6.2%) and MT (12%).
  • Both Group K and U improved peak eccentric elbow flexion torque.
  • Group K reallocated neuromotor effort from compensatory to anticipatory control across multiple muscles; Group U only in triceps.

Conclusions:

  • Plyometric catch/throw training can reallocate neuromotor effort towards anticipatory control.
  • Load uncertainty training did not enhance performance or anticipatory control and may be detrimental.