From: Vitamin D levels and bone mineral density of middle-aged premenopausal female football and volleyball players in Japan: a cross-sectional study
Non-exercise
Volleyball
Football
P-value b
(n = 25)
(n = 40)
(n = 27)
Calcium intake score
5.3 ± 2.3a
5.3 ± 2.5
6.3 ± 2.4
0.74