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)