Physical Activity Self-Report
There are seven instruments that collect physical activity data by self reports.
ACT24
The ACT24 is a web-based data collection instrument that allows participants to self-report their activity in the past 24 hours. Participants completed the ACT24 six times during the study with two months between tasks (administrations). At each assigned interval, the study center contacted participants and asked them to complete the ACT24 within 24 hours. Participants received email and telephone reminders from the study center to complete the ACT24. If the participant did not complete the ACT24 in the specified timeframe, it was reassigned three to five days after the missed completion date. An ACT24 administration was reassigned up to two times within the month before it was considered incomplete. In summary: each participant was allowed three attempts, assigned on different days, to complete the assigned ACT24 task for each interval. A few participants provided more than one complete ACT24 within a specified timeframe.
ACT24 data are provided in multiple files and formats:
- 5-minute epoch files (contain multiple activities occurring within a 5 minute block and related MET information)
- First complete ACT24 within scheduled timeframe (act24_5min.sas7bdat)
- Additional complete ACT24s within scheduled timeframe (act24_5min_secondary_complete.sas7bdat)
- Incomplete ACT24s (act24_5min_not_complete.sas7bdat)
- Per Activity files (contain additional detailed information about each activity)
- First complete ACT24 within scheduled timeframe (act24_activity.sas7bdat)
- Additional complete ACT24s within scheduled timeframe (act24_activity_secondary_complete.sas7bdat)
- Incomplete ACT24s (act24_activity_not_complete.sas7bdat)
- Respondent files (contain information about participant interface with web-based system)
All free-text responses provided by participants have been removed from these data files. Activities with free-text responses were reviewed and either placed into existing activities defined by the ACT24, or in newly created activity levels if no appropriate predefined activity existed.
The ACT24 web tool provides MET levels according to the 2000 Compendium of Physical Activities. An up-converted set of MET levels using the 2011 Compendium of Physical Activities is also provided in these datasets.
Click here for data dictionaries and formats for the ACT24 files. Datasets can be obtained by submitting a request.
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NIH-AARP Study PAQ
The AARP Physical Activity Questionnaire asked participants to recall the time spent engaging in household, leisure time, transportation, and sedentary activities over the past 12 months.
Click here for data dictionaries and formats for the PAQ-AARP files. Datasets can be obtained by submitting a request.
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CHAMPS
The Community Health Activities Model Program (CHAMPS) physical activity questionnaire is a self-administered computer questionnaire designed for older adults. Participants were asked to recall if they engaged in 40 specific activities in the last 4 weeks. The weekly frequency and duration were asked for each activity completed.
Click here for data dictionaries and formats for the CHAMPS file. Datasets can be obtained by submitting a request.
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Harvard PAQ
The Harvard Physical Activity Questionnaire asked participants to recall the time spent engaging in various physical and sedentary activities over the past 12 months. The Harvard Physical Activity Questionnaire is a subset of a questionnaire given out for the Harvard Alumni Health Study in 1962. The questionnaire quantifies each participant's activity level estimates energy expenditure per activity and at various energy levels, light intensity, moderate, vigorous, active, or sedentary.
Click here for data dictionaries and formats for the PAQ-Harvard files. Datasets can be obtained by submitting a request.
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Stanford PAQ
The Stanford Brief Activity Survey, Stanford PAQ, asked participants two questions about typical physical activity associated with a participant’s job/household and leisure time activities over the past year. It then scores participants and puts them into an activity category. The survey was given to participants twice, 6 months apart. Click here for more information on The Stanford Brief Activity Survey.
Click here for data dictionaries and formats for the PAQ-Stanford files. Datasets can be obtained by submitting a request.
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