The purpose of this study was to examine the influence of no-error knowledge of results (KR) and relative frequency of feedback on the performance and retention of an isokinetic, internal shoulder rotation exercise. Males(
$N =32$
), who were free of any shoulder injuries, uninvolved in organized athletics, and unfamiliar with isokinetic testing; performed 90 acquisition trials over a period of three days at 70% after the last acquisition session followed a 10-trial delayed retention test. Participants received error KR in either a 10% bandwidth, yoked, verbal 100% KR condition. Retention results revealed that participants in the 10% bandwidth and yoked conditions performed more consistently than both of the 100% to be more accurate than their yoked counterparts. Our findings support previous research and provide empirical support for using reduced amounts of extrinsic feedback when learning a sub-maximal, isokinetic strength task.
