Table 4.

Bivariate associations between recreational physical activity variables and breast density variables, benign controls (n = 224)

Recreational physical activity variableDense area
Non-dense area
Total breast area
% Density
Mean (SD)PMean (SD)PMean (SD)PMean (SD)P
Cumulative exercise, MET-h/wk
    No activity54.3 (33.4)0.97134.8 (81.0)0.02189.1 (86.2)0.00731.8 (17.4)0.44
    ≤551.4 (34.4)100.1 (74.7)151.5 (77.6)39.1 (21.0)
    5.1-1051.4 (25.3)99.5 (76.2)150.9 (80.4)39.3 (18.8)
    10.1-2049.0 (28.8)85.1 (51.5)134.1 (50.1)39.2 (20.4)
    20.1-4050.1 (27.2)95.1 (69.8)145.3 (74.2)39.9 (20.7)
    ≥4046.8 (25.5)67.2 (34.7)114.0 (34.6)42.5 (17.8)
Mild exercise, h/wk
    No activity54.1 (33.2)0.39114.2 (75.3)0.04168.3 (80.1)0.0235.3 (19.1)0.07
    <152.4 (31.2)79.8 (61.9)132.2 (59.8)44.7 (21.9)
    1.1-247.1 (26.5)104.4 (69.1)151.5 (72.9)36.3 (19.7)
    2.1-447.9 (24.9)89.4 (55.9)137.3 (61.7)37.8 (16.9)
    ≥436.0 (13.8)72.5 (94.2)108.5 (84.4)45.6 (21.1)
Moderate or strenuous exercise, h/wk
    No activity49.5 (30.6)0.70108.0 (74.0)0.15157.5 (75.0)0.1836.1 (20.0)0.37
    <157.2 (32.7)97.2 (77.1)154.4 (88.8)41.1 (16.8)
    1.1-250.0 (27.7)73.2 (46.9)123.2 (43.9)43.5 (22.0)
    2.1-449.6 (27.0)100.4 (66.5)150.0 (71.0)37.9 (21.0)
    ≥448.0 (26.8)74.3 (36.3)122.4 (38.4)40.4 (18.8)
  • NOTE: P from ANOVA.