Descriptives of participants and mean values of assessments
| Sport | Age group | Gender | Years in sport | No of other sports | Sleeping problems/fatigue (GSQ) | Sleep quantity (GSQ) | Well-being (WHO-5 WBI) | Poor general mental health (GHQ-12) | Coach autonomy support (SCQ) | Pressure/activation (PASS) | ||||||
| Female/male/ other/not disclosed | Mean (SD) | Mean (SD) | n | Mean (SD) | n | Mean (SD) | n | Mean (SD) | n | Mean (SD) | n | Mean (SD) | n | Mean (SD) | ||
| Basketball | ≤12 | 15/0/0/0 | 3.50 (1.56) | 1.60 (.91) | 15 | 9.33 (2.29) | 14 | 9.46 (.87) | 15 | 16.07 (5.27) | 15 | 10.60 (4.05) | 15 | 31.53 (8.75) | 14 | 31.78 (10.04) |
| 13–15 | 12/17/0/1 | 4.90 (2.26) | 1.33 (.71) | 30 | 9.63 (1.90) | 30 | 8.48 (1.28) | 30 | 16.97 (4.79) | 30 | 10.47 (4.63) | 30 | 34.27 (5.52) | 26 | 30.19 (8.55) | |
| ≥16 | 16/14/0/0 | 8.03 (2.99) | 1.30 (.79) | 30 | 10.23 (2.43) | 29 | 8.15 (1.20) | 30 | 14.70 (4.12) | 30 | 14.73 (5.67) | 30 | 28.87 (10.01) | 28 | 38.96 (9.66) | |
| Total | 43/31/0/1 | 5.91 (3.10) | 1.37 (.79) | 75 | 9.81 (2.20) | 73 | 8.54 (1.26) | 75 | 15.88 (4.68) | 75 | 12.20 (5.33) | 75 | 31.56 (8.46) | 68 | 34.13 (10.07) | |
| Gymnastics | ≤12 | 67/8/1/2 | 5.13 (3.47) | 1.71 (.69) | 78 | 8.73 (1.78) | 76 | 9.08 (1.00) | 78 | 17.56 (4.42) | 78 | 9.26 (4.22) | 78 | 35.55 (6.71) | 59 | 25.02 (6.29) |
| 13–15 | 30/7/0/0 | 6.62 (3.22) | 1.65 (.68) | 37 | 10.22 (2.36) | 34 | 8.21 (.86) | 37 | 13.65 (5.06) | 37 | 13.46 (5.55) | 37 | 31.51 (7.59) | 34 | 33.65 (7.72) | |
| ≥16 | 15/0/0/0 | 10.27 (2.87) | 1.27 (.46) | 15 | 11.27 (1.75) | 15 | 7.97 (.92) | 15 | 10.07 (4.23) | 15 | 16.33 (3.15) | 15 | 33.00 (5.45) | 14 | 39.64 (5.23) | |
| Total | 112/15/1/2 | 6.16 (3.69) | 1.64 (.67) | 130 | 9.45 (2.15) | 125 | 8.71 (1.06) | 130 | 15.58 (5.27) | 130 | 11.27 (5.20) | 130 | 34.11 (7.03) | 107 | 29.67 (8.59) | |
| Total | ≤12 | 82/8/1/2 | 4.88 (3.30) | 1.69 (.73) | 93 | 8.83 (1.87) | 90 | 9.14 (.98) | 93 | 17.32 (4.57) | 93 | 9.47 (4.20) | 93 | 34.90 (7.18) | 73 | 26.31 (7.57) |
| 13–15 | 42/24/0/1 | 5.85 (2.94) | 1.51 (.50) | 67 | 9.95 (2.17) | 64 | 8.35 (1.08) | 67 | 15.13 (5.17) | 67 | 12.12 (5.33) | 67 | 32.75 (6.83) | 60 | 32.15 (8.20) | |
| ≥16 | 31/14/0/0 | 8.78 (3.10) | 1.29 (.70) | 45 | 10.58 (2.26) | 44 | 8.09 (1.11) | 45 | 13.15 (4.67) | 45 | 15.27 (4.99) | 45 | 30.24 (8.91) | 42 | 39.19 (8.38) | |
| Total | 155/46/1/3 | 6.06 (3.47) | 1.54 (.72) | 205 | 9.58 (2.17) | 198 | 8.65 (1.14) | 205 | 15.69 (5.05) | 205 | 11.61 (5.26) | 205 | 33.18 (7.67) | 175 | 31.40 (9.42) | |
GHQ-12, General Health Questionnaire; GSQ, Garmy Sleep Questionnaire; PASS, Pressure and Activation Stress Scale; SCQ, Sport Climate Questionnaire; WHO-5 WBI, WHO Well-being Index.