https://www.jmir.org/2012/5/e123/citations
Background: Online or Web-based measurement systems have been proposed as convenient methods for collecting physical activity data. We developed two Web-based...
internet researchweb basedjournalmedicalvalidation
https://www.scirp.org/reference/ReferencesPapers?ReferenceID=2061230
Duda, J. L., & Whitehead, J. (1998). Measurement of Goal Perspectives in the Physical Domain. In J. Duda (Ed.), Advances in Sport and Exercise Psychology...
j ldudawhiteheadmeasurementgoal