Table 4.

Comparison among the outdoor athletes with past stress fractures and without any past fractures

	With stress fractures (n=3)	Without any fractures (n=10)	P Value
Height, cm	174.3±10.2	171.5±3.9	NS
Body weight, kg	62.7±5.2	60.7±11.9	NS
BMI, kg/m2	20.6±1.7	20.6±3.6	NS
Body fat percentage, %	11.2±1.8	10.8±4.9	NS
Muscle mass, kg	52.7±4.4	50.9±6.4	NS
Bone mass, kg	2.9±0.3	2.8±0.3	NS
Practice time with sunlight exposure, h/wk	17.3±1.15	16.9±1.9	NS
Time of sleeping, h/dy	5.3±2.1	6.7±1.2	NS
S-25(OH) D, ng/mL	21.1±4.3	26.4±3.0	<0.05

The values are given as means±standard deviation.

^♰ Stundent’s t-test.

NS: not significant