Table 2.

Estimated Variance Components and Their Contributions (in Percentages) to the Error Variance of Repeated Measurements of 7 Arm Movements (n=48)

• a Negative variance components (ranging from −0.027 to −0.517) were set to 0.

• b Error variance expressed as a percentage of total variance. For example, for shoulder external rotation, the calculation would be as follows: total variance (626.4) minus participant variance (385.0) equals error variance (241.3); error variance therefore represents 38.6% of total variance.