Table 1 Bone mineral content, bone mineral density and bone area measured at the femur, lumbar spine and whole body, for the three groups, before a 6wk exercise intervention. Data are means (±SD).
Bone mineral content (mg Bone mineral density (mg·cm−2) Bone area (cm2)
Femur
Control 164 (31) 174 (17) .94 (.09)
Swimmers 146 (22) 169 (12) .86 (.07)
Runners 178 (14) 180 (7) .99 (.05)
Lumbar spine
Control 301 (50) 160 (13) 1.87 (.16)
Swimmers 279 (38) 157 (10) 1.77 (.15)
Runners 339 (36) 168 (9) 2.01 (.12)
Whole body
Control 4497 (558) 111 (9) 40.54 (2.77)
Swimmers 4106 (371) 108 (6) 38.05 (2.10)
Runners 4681 (351) 118 (49 39.77 (2.74)