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American Journal of Health Education, v40 n1 p5-13 Jan-Feb 2009

Background: Most physical activity recall questionnaires assess activity over a 7-day period. However, questionnaires have been validated in adolescents and adults using shorter recall timeframes. Purpose: The purpose of this study was to assess the validity of a self-administered 3-day physical activity recall instrument (3DR) in young adults. Methods: Thirty-nine participants (age: 21.0 [plus or minus] 2.2 years; body mass index: 23.3 [plus or minus] 3.3 kg/m[superscript 2]) wore an accelerometer during all waking hours for seven consecutive days and completed the 3DR on the eighth day. Results: During the 3-day recall period, participants accumulated 283,488.1 [plus or minus] 86,792.3 counts/day, 347.0 [plus or minus] 102.5 counts/minute, and reported spending 23.3 (IQR = 35.0) and 11.7 (IQR = 43.3) minutes in moderate and vigorous intensity activity, respectively. Counts/day and counts/minute correlated with self-reported minutes of vigorous activity (rs=0.40, p=0.01 for both variables). Discussion: Results indicate that the validity indices of the vigorous 3DR items are similar to other self-report physical activity questionnaires. Translation to Health Education Practice: Health education and promotion professionals should consider using the 3DR when evaluating physical activity interventions in college students and young adults. (Contains 4 tables.)

Descriptors: Body Composition, Health Education, Physical Activities, Physical Activity Level, Validity, Questionnaires, Young Adults, Measurement Equipment, Intervention, College Students, Self Evaluation (Individuals)

American Alliance for Health, Physical Education, Recreation and Dance. 1900 Association Drive, Reston, VA 20191. Tel: 800-213-7193; Fax: 703-476-9527; e-mail: info[at]; Web site:

Autor: Han, Jennifer L.; Dinger, Mary K.


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