Measures of Feasibility and Acceptability
The feasibility was investigated through attrition rates and use patterns on each platform. For TCT and CG, use was defined as the total hours of training completed and training intensity (hours of training completed per week). Acceptability was measured through participant ratings of satisfaction, interest, and enjoyment in PRIME and in the TCT and CG conditions and the anticipated benefits of the TCT and CG conditions. Accuracy in TCT exercises was used as an indicator of engagement and to screen for participants who were not meaningfully participating. For PRIME, use patterns include log-in frequency, number of user-initiated interactions with a motivational coach, number of peer interactions, number of community posts, number of goals set, and number of goals achieved.