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Change in heart rate or breathing when weight lifting

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For sample adults who had participated in weight lifting in the past 2 weeks (EXLIFT), EXLIFTBR reports whether respondents usually experienced a small, moderate, or large increase, or no increase at all in their heart rate or breathing while weight lifting.

After determining that a respondent participated in aerobics or aerobic dancing, respondents were first asked, "How many times in the past 2 weeks did you go weight lifting?" (EXLIFTNO). They were then asked, "On the average, about how many minutes did you spend weight lifting each time?" (EXLIFTMIN). Finally, to obtain information for EXLIFTBR, respondents were asked, "What usually happened to your heart rate or breathing when you weight lifted? Did you have a small, moderate, or large increase, or no increase at all in your heart rate or breathing?"


Apart from universe changes, EXLIFTBR is fully comparable across all years.


  • 1985; 1990: Sample persons aged 18-64 who did weight lifting/training, past 2 weeks.
  • 1991; 1998: Sample adults age 18+ who lifted weights in the past 2 weeks.
  • 1995: Half of sample persons age 18+ (excluded from AIDS supplement) who weightlifted or did other exercise to increase muscle strength in the past two weeks.


  • 1985, 1990-1991, 1995, 1998