title: Validation of a new brief physical activity survey among men and women aged 60-69 years.
abstract: The Stanford Brief Activity Survey (SBAS), a new two-item physical activity survey, and the Stanford Seven-Day Physical Activity Recall (PAR) questionnaire were administered to men and women, aged 60-69 years, in the Atherosclerotic Disease VAscular functioN and genetiC Epidemiology (ADVANCE) Study. Frequency distributions of SBAS activity levels, as well as a receiver operating curve, were calculated to determine if the SBAS can detect recommended physical activity levels of 150 or more minutes/week at moderate or greater intensity, with PAR minutes/week. Data were collected between December 2001 and January 2004 from 1,010 participants (38% women) and recorded. Subjects were 65.8 (standard deviation: 2.8) years of age, 77% were married, 55% were retired, 23% were college graduates, and 68% were Caucasian. SBAS scores related significantly in an expected manner to PAR minutes/week (p < 0.01), energy expenditure (kcal/kg per day) (p < 0.01), and selected cardiovascular disease risk biomarkers (p < 0.01). The SBAS of physical activity at moderate intensity had a sensitivity of 0.73 and a specificity of 0.61. The SBAS is a quick assessment of the usual amount and intensity of physical activity that a person performs throughout the day. The SBAS needs further validation in other populations but demonstrated the potential of being a reasonably valid and inexpensive tool for quickly assessing habitual physical activity in large-scale epidemiology studies and clinical practice.
authors.affiliation: Stanford Prevention Research Center, Stanford University School of Medicine, Stanford, CA 94303-5705, USA. rpiliae@stanford.edu
authors.forename: Ruth E
authors.initials: RE
authors.lastname: Taylor-Piliae
authors.forename: Linda C
authors.initials: LC
authors.lastname: Norton
authors.forename: William L
authors.initials: WL
authors.lastname: Haskell
authors.forename: Mohammed H
authors.initials: MH
authors.lastname: Mahbouda
authors.forename: Joan M
authors.initials: JM
authors.lastname: Fair
authors.forename: Carlos
authors.initials: C
authors.lastname: Iribarren
authors.forename: Mark A
authors.initials: MA
authors.lastname: Hlatky
authors.forename: Alan S
authors.initials: AS
authors.lastname: Go
authors.forename: Stephen P
authors.initials: SP
authors.lastname: Fortmann
mesh_terms: D000203:Activities of Daily Living; D000368:Aged; D015415:Biomarkers / Q000032:analysis; D015992:Body Mass Index; D002318:Cardiovascular Diseases / Q000517:prevention & control; D016022:Case-Control Studies; D004734:Energy Metabolism; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008055:Lipids / Q000097:blood; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D011159:Population Surveillance; D012372:ROC Curve; D015203:Reproducibility of Results; D012680:Sensitivity and Specificity; D011795:Surveys and Questionnaires
chemical_list: D015415:Biomarkers; D008055:Lipids