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An understanding of the habitual physical activity levels of children with chronic disorders is an important consideration relevant to both treatment and clinical monitoring (8). However, a feasible and useful tool for measuring the physical activity levels of children with chronic illness in clinical settings is not readily available. In this article, we review the development and initial psychometric testing (i.e., construct and reliability) of the Habitual Activity Estimation Scale (HAES), a measure developed for use in clinical research. A summary of these investigations suggests that the HAES appears both valid and reliable as a measure of activity in pediatric populations.
Hay et al. (Mon,) studied this question.