Table 1.

Physical characteristics and sports participation of altitude (Alt) and sea-level (SL) runners.

	Alt [n = 13 (10 males, 3 females)]	SL [n = 13 (10 males, 3 females)]
Age (yrs)	15.0 ± 1.3	14.7 ± 1.9
Tanner stage	4.5 ± 0.7	4.2 ± 0.8
Weight (kg)	58.2 ± 3.6	58.0 ± 1.6
Height (cm)	173.2 ± 6.2	172.4 ± 4.4
BMI (kg/m2)	19.4 ± 0.8	19.5 ± 0.9
VO2max (mL·kg−1·min−1)	61.2 ± 4.8	60.1 ± 6.5
Years of training	3.2 ± 0.5	2.9 ± 0.7
Number of races per year	4–7	4–7

Values are mean ± SD.