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Table 1 Anthropometric characteristics of the study participants (mean ± standard deviation, n = 180)

From: One-year developmental changes in motor coordination and tennis skills in 10–12-year-old male and female tennis players

 

10-year-olds

11-year-olds

12-year-olds

Girls (n = 30)

Boys (n = 30)

Girls (n = 30)

Boys (n = 30)

Girls (n = 30)

Boys (n = 30)

Measurement

I

II

I

II

I

II

I

II

I

II

I

II

Body mass (kg)*

37.09 ± 5.78

38.18 ± 5.81

35.29 ± 4.06

36.52 ± 3.65

38.27±

3.79

40.20 ± 3.69

39.07 ± 4.51

40.76 ± 4.52

44.77 ± 5.25

46.79 ± 5.26

44.87 ± 4.35

46.56 ± 4.26

Body height (cm)*

141.10 ± 5.02

143.63 ± 4.72

142.53 ± 5.41

144.53 ± 4.90

148.70 ± 3.41

151.80 ± 3.43

148.53 ± 4.40

150.73 ± 4.01

155.77 ± 5.81

158.60 ± 5.75

155.30 ± 5.39

157.53 ± 5.48

  1. I, assessment in March; II, assessment in December. *Significant difference in I vs. II comparison for each sex and age group (p < 0.01).