ResultsThe results for the pilot study found that test-retest reliability forTrA thickness between snapshot 1 and 2 was shown to be excellentwith an intra-class correlation coefficient (ICC) of 0.967 (p < 0.001)with a typical error of 0.04 cm. Within-participant test-retest reli-ability for TrA thickness was also calculated to be excellent with anICC of 0.968 (p < 0.001) with a typical error of 0.03 cm.Sixteen potential participants did not attend appointmentsleaving complete data for fifty participants for analysis. Physicalcharacteristics for the participants in each sub-groups, as defined bythe frequency of ETAP experience, are displayed in Table 1. Age wasshown to be significantly different between-groups (df, 3, F ratio2.923, p = 0.044), with participants who never experienced ETAPbeing significantly older (p = 0.009). Significant differences betweengroups were present for the average total number of training hoursper week (p = 0.006). Analysis showed significantly lower trainingvolume for the participants who experienced monthly comparedto the yearly and never groups (p = 0.008 and 0.019, respectively).No other significant differences between groups were found.