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Force and time error for the fast and slow contractions as a function of target force. Each data point corresponds to the mean ± SE for 1 block of 15 trials at each target force for fast (filled circles) and slow (open circles) contractions. a The force error increased with target force for the fast and slow contractions (P < 0.001). b The time error was greater for the slow contractions compared with the fast contractions (P < 0.001)
