Table 1: Distance covered (meters: m) in each training intensity level and biological maturity of swimmers (Tanner stage) at year-1 compared to year-2, *: p<0.05.

Training Intensity Levels	Year-1	Year-2
Level I (~2 mmol.L-1)	136100	169725
Level II (~4 mmol.L-1)	100700	89800
Level III (~6 mmol.L-1)	24000	28850
Level IV (~10 mmol.L-1)	1800	3600
Level V (Max)	6250	10150
Biological Maturity
Tanner Stage	3.1 ± 1.1	4.0 ± 0.9*