Cross-country skiers

Speed skaters

Male

Female

Boys

Girls

(n = 18)

(n = 10)

(n = 5)

(n = 4)

Age (years)

16.2 ± 1.4

15.8 ± 1.0

17.0 ± 1.0

16.0 ± 0.8

Body height (cm)

170.2 ± 6.9

159.0 ± 3.3^ab

170.8 ± 6.3

159.3 ± 8.3^ab

Body weight (kg)

60.3 ± 7.2

53.4 ±5.1^ab

59.6 ± 7.9

56.8 ± 2.1^ab

Body mass index (kg/m²)

20.8 ± 1.9

21.2 ± 1.7

20.3 ± 1.5

22.2 ± 2.0

Percent of body fat (%)

11.5 ± 4.1

25.1 ± 4.4^ab

8.9 ± 2.0

29.4 ± 4.5^ab

Body fat mass (kg)

7.1 ± 3.1

13.6 ± 3.5^ab

5.4 ± 1.7

16.7 ± 2.6^ab

Lean body mass (kg)

51.6 ± 10.4

40.0 ±2.0^ab

54.2 ± 6.2

40.1 ± 2.8

Skeletal muscle mass (kg)

50.4 ± 5.1

37.6 ± 1.8^ab

51.4 ± 5.9

37.8 ± 2.5

Stiffness index

116.1 ± 14.3

116.9 ± 11.5

109.4 ± 21.6

119.0 ± 18.5^ab

Physical activity level

2.8 ± 0.6

2.6 ± 0.4

2.9 ± 0.1

2.8 ± 0.1