Plotting gas exchange data over VO2 is likely to be the method of choice for determining VT. Although a minority of children have uninterpretable X-VO, plots, VT can be reliably interpreted in the remainder. Furthermore, VT is a valid marker of aerobic capacity. Thus, VT is a useful measure of aerobic fitness in children.

SLWAnT is a highly reliable method to measure single-leg power. The above equation provides good estimates of optimal braking force. The SLWAnT can, therefore, be used to monitor changes in single-leg power and to assess leg-dominance.

Peak torque during an isokinetic bilateral knee extension or flexion is usually lower than the summed peak torque of two unilateral contractions, and this phenomenon is designated as bilateral deficit (BD). The objectives of this study were to determine whether a BD also exists for more complex, alternating movements (e.g., short-term, high-intensity cycling), and to assess the possible effects of gender and maturity. Forty children and adolescents performed two unilateral (ULWAnT) and one bilateral Wingate anaerobic test (BLWAnT). The highest power reached in any 3-s interval (peak power; PP), and the total mechanical work (TMW) performed during the test was determined. Individual BD for PP (BDpp, %) was calculated by dividing the PP in the BLWAnT by the sum of the PP values of both ULWAnTs. The BD for TMW (BDTMw) was calculated in the same way. The sum of PP generated during the two ULWAnTs was larger than the PP measured in the BLWAnT (P<0.000001). The same difference was observed for TMW (P<0.0001). Maturity did not affect the BDpp or BDTMW (P=0.34). However, the BD was more pronounced in females compared to males (P= 0.03). In conclusion, a BD is evident during cycling exercise.

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