Bone Mineral Density and Body Composition of Adult Premenopausal Women with Three Levels of Physical Activity

Table 1

Characteristics of participants^a.

	Sedentary (𝑛=16)	Maintenance (𝑛=16)	Sport Team (𝑛=16)	𝑃^b
Age (years)	33.5±5.8	34.0±5.0	32.4±8.5	0.7770
Height (cm)	161.0±5.0	161.0±3.0	164±6.0	0.1681
Weight (kg)	61.6±6.5	57.5±5.3	60.5±8.7	0.2434
Body mass index (kg/m^2)	23.5 ± 1.8	22.2±1.8	22.5±2.5	0.1738
Calcium intake (mg/day)^c	500 (400–800)	400 (400–800)	800 (400–1100)	0.1026
Physical activity (MET-min/week)	485±152	667±127^d	1115±175^e	<0.0001

^aValues are mean ± standard deviation except for calcium intake, which is median (interquartile range).
^bAssessed by ANOVA, except for calcium intake, in which Kruskall-Wallis nonparametric test was used.
^cThe ranges of calcium intake were (in mg/day) 200 to 1000 for the Sedentary group, 100 to 1200 for the Maintenance group, and 400 to 1200 for the Sports group.
^dDifferent from Sedentary (𝑃<0.01)
^eDifferent from Sedentary and Maintenance (both 𝑃<0.001).