Table 1.

Athletes and controls’ data

Group	Number	Main event	M/F	Top/national level	Age (mean + SD, range)
Runners
Long distance	65	5000 m marathon	50/15	21/44	31.4 + 9.2 (17–50)
Power event (sprinters and jumpers)	72	100–200 m, jumps	48/24	23/49	30.1 + 12.7 (17–50)
Swimmers
Long distance	43	800–1500 m	27/16	15/28	23.6 + 7.9 (16–49)
Short distance	48	50–100 m	33/15	16/32	23.3 + 8.3 (16–48)
Controls	217	nr	137/80	nr	26.4 + 5.8 (19–29)

nr not relevant