Distinguished Professor Emeritus, Herbert Wertheim School of Public Health and Human Longevity Science, University of California, San Diego
Professorial Fellow, Australian Catholic University, Melbourne

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System for Observing Fitness Instruction Time (SOFIT)


Published in 2009, the purpose of this instrument is to obtain simultaneous objective data on student activity levels, the lesson context in which they occur, and how teachers interact regarding promoting physical activity and fitness during physical education, exercise classes, and sport practices.

Main Citation:

McKenzie, T.L., Sallis, J.F., and Nader, P.R. (1991).SOFIT: System for observing fitness instruction time. Journal of Teaching in Physical Education, 11, 195-205.


General Description and Procedures Manual


A comprehensive tool for assessing physical education classes by providing for the simultaneous collection of data on student activity levels, the lesson context, and teacher behavior.

Thomas L. McKenzie, Ph.D.

    Training Videos for SOFIT and SOPARC


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