Activity component(s) assessed: Leisure-timeTime frame of recall: Past week or past yearOriginal mode of administration: Interviewer- or self-administeredPrimary source of information: Dr. Ralph S. Paffenbarger, Jr.; Stanford University School of Medicine; Department of Health Research and Policy; HRP Redwood Bldg., Room T213B; Stanford, CA 94305-5092Primary reference: Paffenbarger, R. S., A. L. Wing, and R. T. Hyde. Physical activity as an index of heart attack risk in college alumni.Am. J. Epidemiol. 108:161-175, 1978.Primary reference: Paffenb PaffenbargerRSALWingRTHydePhysical activity as an index of heart attack risk in college alumni.Am J Epidemiol108161-1751978Note: The Paffenbarger Physical Activity Questionnaire was designed primarily to identify leisure-time physical activities associated with hypertensive cardiovascular disease in college alumni. To supplement the material included here, the reader should refer to a previous article by Paffenbarger and colleagues (9). A sample questionnaire to assess physical activity, physiological fitness, diet, and health was presented by these authors (9). Part “C” of the questionnaire includes the questions on physical activity that are described herein.RELIABILITY AND VALIDITY STUDIESTables 37,38Paffenbarger Physical Activity QuestionnaireTableINSTRUCTIONSAdministering or completing the Paffenbarger questionnaire is self-explanatory. The individual is asked explicitly about walking and stair climbing, which are modes of “getting about” required of almost everyone. In addition, information on recreation and sports play is requested through open-ended questions concerning frequency of times played annually and years of participation together with duration of play/episode.CALCULATIONSThe kilocalorie scores for city blocks walked and flights of stairs climbed were defined by Paffenbarger and colleagues in 1978(11). The original source of the kilocalorie scores used for sports play and recreation is Passmore and Durnin(13).KilocaloriesWalking1 city block = 8 kcal12 city blocks = 1 mile = 96 kcalClimbing stairs1 flight of stairs = 10 steps = 4 kcalSports and recreational activitiesLight intensity = 5 kcal/minVigorous intensity = 10 kcal/minMixed intensity = 7.5 kcal/minKilocalories per week: EquationPhysical Activities Ranked by MET ValueReprinted with permission of the publisher from Lee, I-M., R. S. Paffenbarger, Jr., and C. C. Hsieh. Time trends in physical activity among college alumni, 1962-1988. Am. J. Epidemiol. 108:161-175, 1992. Copyright 1992 by the American Journal of Epidemiology.MET value = 2.5: boating, sailing; croquet; trail bike ridingMET value = 3.0: bocci ball, lawn ball; bowling; candlepin bowling, duckpin bowling; carpentry in workshop, do-it-yourself projects; diving; horseshoes; Indian clubs; shuffleboard; surfing and wind surfingMET value = 3.5: archery; catch, frisbee, games with children; coaching sports; fishing from riverbank or boat, surf casting; home maintenance, home repair, housekeeping; hunting, shooting, working dogs in the field; mowing lawn with power mowerMET value = 4.0: boat maintenance; curling; gardening; golf; raking lawn; walkingMET value = 4.5: badminton; body building, Nautilus, weight lifting; canoeing for pleasure, kayaking, white water rafting; farming, ranching; horseback riding, fox hunting; painting, paper hanging; platform tennis, table tennis; snorkeling, spear fishing; volleyballMET value = 5.0: baseball, cricket, kickball, softball, track ball, whiffleball; basketball; dancing; digging, spading; gymnastics, trampoline; skateboardingMET value = 5.5: aerobics, calisthenics, home exercise, tai chi chuan; bicycling; cardiac rehabilitation therapy, health clubMET value = 6.