Table 1 Descriptive characteristics of the sample stratified by sports at baseline and resistance training engagement (n = 91)
Resistance Training Engagement | ||||||
|---|---|---|---|---|---|---|
Impact sports + RT (n = 21) | Impact sport-only (n = 45) | p-value | Swimming + RT (n = 8) | Swimming-only (n = 17) | p-value | |
Variables-Baseline | Mean (SD) | Mean (SD) | Mean (SD) | Mean (SD) | ||
Boys / Girls | 10 / 11 | 38/7 | --- | 5 / 3 | 12 / 5 | --- |
Age (year) | 14.7 (1.6) | 13.3 (1.6) | 0.003 | 16.1 (1.9) | 13.4 (2.2) | 0.009 |
Body weight (kg) | 58.3 (14.4) | 58.0 (13.3) | 0.941 | 64.8 (9.6) | 50.9 (11.4) | 0.007 |
Height (cm) | 167.7 (9.0) | 168.0 (12.6) | 0.935 | 171.8 (7.7) | 158.7 (9.9) | 0.003 |
Body fatness (%) | 21.6 (8.3) | 20.4 (10.9) | 0.322 | 16.7 (6.8) | 22.3 (8.9) | 0.131 |
LST (kg) | 43.7 (9.90 | 42.9 (10.6) | 0.767 | 50.0 (13.3) | 36.9 (9.3) | 0.011 |
Maturity offset (year) | 1.6 (1.5) | 0.2 (1.4) | < 0.001 | 2.5 (1.4) | 0.1 (1.8) | 0.003 |
Training parameters | ||||||
Frequency of training (days/week) | 3.3 (1.9) | 3.5 (1.7) | 0.674 | 5.9 (0.4) | 5.7 (0.8) | 0.842 |
Training volume (minutes/day) | 152.9 (74.6) | 162.0 (58.9) | 0.678 | 178.1 (76.2) | 142.9 (16.0) | 0.215 |
Weekly training volume (min/week) | 590.0 (473.4) | 619.3 (407.6) | 0.547 | 1050.0 (468.3) | 817.1 (153.9) | 0.262 |
Time of engagement (months) | 49.7 (28.8) | 40.0 (29.5) | 0.095 | 94.5 (32.0) | 57.5 (44.2) | 0.023 |