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Total Exposure, Training, and Match Exposure, h (Mean ± SD), Through a Season for 674 Portuguese Youth Soccer Players by Competitive Age Group
| Exposure | Age Group |
|||
| U-13 (n = 179) | U-15 (n = 169) | U-17 (n = 165) | U-19 (n = 161) | |
| Total, h | 4674 ± 1315a | 5647 ± 1590 | 6119 ± 1311 | 6682 ± 724 |
| Training, h | 4311 ± 1291 | 5277 ± 1552 | 5666 ± 1282 | 6147 ± 754 |
| Match, h | 363 ± 50a | 370 ± 61a | 453 ± 81 | 535 ± 62 |
a Indicates different from U-19 (P < .05).
