Grip force at object lift onset and object hold.

<p>Grip force (F<i>_G</i>) at object lift onset and during object hold on the 1^st trial (averaged across all weights), and averaged across trials 2 through 7 are shown for the CTS and control groups (filled and open symbols, respectively) and each weight condition. Note that F<i>_G</i> during object hold on the first trial is not plotted since F<i>_G</i> did not change significantly across trials, i.e., F<i>_G</i> during hold on the first trial = F<i>_G</i> on trials 2-7. Vertical error bars denote standard errors.