Home exercise adherence is significantly overestimated using both exercise diaries and self-reported scales, as compared to accelerometer data. This the conclusion of a recent study that aimed to determine the validity of exercise diaries and self-reported scales for evaluating home exercise adherence compared to accelerometer data.

On top of that, both measures showed large variability between subjects; self-reporting also showed low test-retest reliability. Compared to accelerometer data, exercise journals and self-reporting seem to be inadequate measures of home exercise adherence.