Table 5.

Any and hours per week of recreational physical activity and incident cancer of the proximal colon, distal colon, and rectum, number of cases and multivariate-adjusted RR and 95% CI, CPS II Nutrition Cohort men and women, 1992-1993 to 1999

Men and women
Proximal colon
Distal colon
Rectosigmoid and rectum
Recreational physical activity in the year before study enrollment
No. casesMultivariate-adjusted* RR (95% CI)No. casesMultivariate-adjusted* RR (95% CI)No. casesMultivariate-adjusted* RR (95% CI)
Total505339390
Recreational physical activity
No activity671.00 (reference)411.00 (reference)631.00 (reference)
Any activity4380.77 (0.59-1.01)2980.91 (0.65-1.28)3270.70 (0.53-0.93)
Recreational physical activity (h/wk)
No activity671.00 (reference)411.00 (reference)631.00 (reference)
    <21560.83 (0.62-1.10)1101.00 (0.69-1.43)1120.72 (0.52-0.98)
    2-3800.73 (0.52-1.01)540.87 (0.57-1.32)600.68 (0.47-0.97)
    4-61230.85 (0.62-1.15)740.89 (0.60-1.32)680.59 (0.41-0.83)
    ≥7790.63 (0.45-0.88)600.82 (0.55-1.24)870.83 (0.59-1.16)
P for trend, with and without reference group0.008, 0.030.15, 0.200.73, 0.45
Type of recreational activities (h/wk)
No activity671.00 (reference)411.00 (reference)631.00 (reference)
Walking only
    <41450.84 (0.62-1.12)950.93 (0.64-1.35)1000.71 (0.51-0.97)
    4-6700.82 (0.58-1.15)480.97 (0.63-1.48)410.60 (0.40-0.90)
    ≥7380.83 (0.56-1.25)301.08 (0.67-1.73)360.89 (0.59-1.34)
P for trend, with and without reference group0.44, 0.900.84, 0.560.44, 0.70
Walking plus other activities
    <4740.69 (0.49-0.97)540.89 (0.59-1.35)570.67 (0.46-0.97)
    4-6440.80 (0.54-1.18)220.71 (0.42-1.21)230.53 (0.33-0.87)
    ≥7390.50 (0.33-0.75)240.55 (0.33-0.92)460.72 (0.49-1.08)
P for trend, with and without reference group0.008, 0.120.15, 0.270.30, 0.32
  • * Models included age, sex, education, exercise level in 1982, cigarette smoking, alcohol, red meat, folate, fiber, multivitamin use in 1982, and hormone replacement therapy (women).

  • Included walking, jogging/running, lap swimming, tennis or racquetball, bicycling/stationary bike, aerobics/calisthenics, and dancing.