Table 1. Basic demographic characteristics of the participants.

Characteristic	Amateur group (n = 77)	Elite group (n = 70)
Age (years)	20.1 ± 0.8	20.0 ± 0.9
Height (cm)	167.4 ± 4.4	173.4 ± 5.1*
Mass (kg)	64.3 ± 4.0	67.6 ± 5.3*
BMI (kg/m2)	22.9 ± 0.7	22.5 ± 1.0
Table tennis training and competition experience (years)	4.4 ± 1.2	10.0 ± 1.6**

Notes:

BMI, body mass index (calculated as the weight in kilograms divided by the square of the height in meters). Values are given as mean ± SD.

^*p < 0.05.

^**p < 0.01 (student-t test, two-tails).