Speed dependant influence of attentional focusing instructions on force production and muscular activity during isokinetic elbow flexions

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Abstract

This experiment assessed the influence of internal (movement) or external (outcome) attentional focusing instructions on force production and muscular activity at different movement speeds. Twenty five participants completed 10 reps of single arm elbow flexions on an isokinetic dynamometer at speeds of 60, 180 and 300 s1 under three conditions (control trial, followed by counterbalanced internal and external focus trials). EMG activity of the biceps brachii and net joint elbow flexor torque were measured. An external focus was associated with significantly lower EMG at all speeds when compared to an internal focus. However, an external focus resulted in greater torque production only at 60 s1 when compared to an internal focus. These findings suggest that movement speed may influence the efficacy of different attentional focusing instructions, with implications for the instruction of movements in sport, exercise and rehabilitation settings.
Original languageEnglish
Pages (from-to)135-148
Number of pages14
JournalHuman Movement Science
Volume33
Issue number1
Early online date20 Sep 2013
DOIs
Publication statusPublished - 28 Feb 2014

Keywords

  • Dynamometry
  • Electromyography
  • External focus
  • Instruction
  • Internal focus

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