Table 1

Distribution of women according to physical activity indicators, Tromsø, Norway

All %Premenopausal %Postmenopausal %
n = 2720n = 1741n = 979
Hours physically active in 1986–1987a,b
 Seldom or never50.550.051.4
 ≤2 h/wk36.937.935.0
 >2 h/wk12.612.113.6
Physical activity at work in 1979–1980 and 1986–1987
 Sedentary (at both times)25.225.823.8
 Moderate (at both times)***d
Leisure-time physical activity in 1979–1980 and 1986–1987
 Sedentary (at both times)
 Moderate (at both times)*
Physical activity level todayb compared to earlierg
 More than before10.211.47.7
 Same as before66.167.463.6
 Less than before23.821.228.6***
  • a Physically active enough to cause sweating or hard breathing.

  • b From Third Tromsø study in 1986–1987.

  • c For work, required a lot of walking; for leisure, walked at least four times a week.

  • d ***P < 0.001; *P < 0.05.

  • e For work, women who did not work at least part-time.

  • f From Second Tromsø study in 1979–1980.

  • g Self-assessment of how physically active the woman was at the time of the mammogram relative to 5 yrs ago.