Control of a Whole-Body Task with Uncertain Initial Conditions: Application to the Upstart On Bars

J Mot Behav. 2021;53(3):287-295. doi: 10.1080/00222895.2020.1772712. Epub 2020 Jun 1.

Abstract

The aim was to determine whether operating a feedforward schema for generating movement pattern parameters was more successful than an open loop strategy for coping with uncertain initial conditions. A computer simulation model was used to determine the optimal solutions that maximised the likelihood of performing a successful upstart. Feedforward schema were established between movement pattern parameters and initial angular velocity. The success of modifying a pre-planned movement pattern based on the parameter relationships (feedforward) was compared with optimal solutions unable to adapt (open loop) to initial angular velocity. The open loop solution was successful 28% and 20% of the time for a full strength (elite) and weaker gymnast. The feedforward strategy had success rates of 99% and 96% respectively.

Keywords: control; gymnastics; optimisation; schema; simulation modelling.

MeSH terms

  • Adaptation, Physiological*
  • Biomechanical Phenomena
  • Computer Simulation
  • Gymnastics*
  • Humans
  • Movement