title: Frequently reported activities by intensity for U.S. adults: the American Time Use Survey.
abstract: BACKGROUND
  Knowing the most-frequently reported physical activities can inform intervention strategies, enhance questionnaire design, and inform objective monitor calibration studies.
  
  
  OBJECTIVE
  To determine the 10 most-frequently reported nonwork and nonsleep activities by intensity (sedentary, light, moderate, vigorous) in American Time Use Survey (ATUS) adult respondents.
  
  
  METHODS
  The ATUS is a nationally representative telephone-based survey that captures activities that people recall doing during the preceding 24 hours. ATUS databases from 2003 to 2008 were combined and matched to previously published MET intensity values. Prevalences were rank ordered by weighted frequency within MET-defined intensity categories. Analyses took place in spring 2010.
  
  
  RESULTS
  Data from 79,652 ATUS respondents, all aged ≥20 years, were considered. Overall, the most-frequently reported nonwork, nonsleep sedentary (1.0≤MET<1.6) behavior was eating and drinking (95.6%), followed by watching TV/movies (80.1%); the most-frequently reported light activities (1.6≤MET<3.0) were washing, dressing, and grooming oneself (78.9%), followed by driving a car, truck, or motorcycle (71.4%); the most-frequently reported moderate activities (3.0≤MET<6.0) were housework/interior cleaning [corrected] (25.7%) followed by lawn, garden, and houseplant care (10.6%); and the most-frequently reported vigorous activities were using cardiovascular equipment (2.2%) and running (1.1%).
  
  
  CONCLUSIONS
  On any given day, most U.S. adults reported performing predominantly sedentary and light activities. The greatest prevalence for reported moderate activities was food and drink preparation for both men (12.8%) and women (37.63%), and overall only 5.07% report any vigorous-intensity activity.
authors.affiliation: Walking Behavior Laboratory, Pennington Biomedical Research Center, Baton Rouge LA 70808, USA. tudor-locke@pbrc.edu
authors.forename: Catrine
authors.initials: C
authors.lastname: Tudor-Locke
authors.forename: William D
authors.initials: WD
authors.lastname: Johnson
authors.forename: Peter T
authors.initials: PT
authors.lastname: Katzmarzyk
mesh_terms: D000203:Activities of Daily Living; D000328:Adult; D005260:Female; D006801:Humans; D007899:Leisure Activities; D008297:Male; D009043:Motor Activity; D012737:Sex Factors; D011795:Surveys and Questionnaires; D014481:United States; D055815:Young Adult