Table 1. Mean ± standard deviation of participant characteristics by maturity classification and group allocation. Characteristics HIIT (n=27) Control (n=27) Post Mature Mid Mature Pre Mature Pre Mature Pre Mature Pre Mature Decimal Age (years) 15.35±0.89 12.18±1.25 11.75±0.73 14.86±1.63 12.30±1.48 11.96±0.22 Maturity Offset (years) 1.11±0.17 0.40±0.44 -1.29±0.28 0.98±0.23 0.23±0.23 -1.09±0.35 Stature (cm) 166.44±2.87 157.83±7.50 142.72±6.42 162.72±7.03 156.44±5.12 144.94±7.42 Body Mass (kg) 75.60±2.05 56.96±8.28 34.39±3.25 69.76±5.17 52.69±8.23 36.44±2.89 Sitting Height (cm) 88.56±1.01 81.72±3.65 73.33±2.92 85.50±6.27 81.78±4.41 74.50±3.73 Leg Length (cm) 79.17±0.77 74.94±4.09 70.83±4.19 76.83±3.20 74.83±2.94 71.94±4.42