Bilateral deficit during short-term, high-intensity cycle ergometry in girls and boys.

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.

Ventilatory threshold: a useful method to determine aerobic fitness in children?

Purpose: The objective of this study was to assess intra- and inter-evaluator reliability and validity of ventilatory threshold (VT) determination in children.

Methods: At the age of 6-12 yr, 35 children born prematurely and 20 controls born at term performed an incremental continuous cycling task until volitional fatigue. Fifteen-second averages of VE/VO2, VE/VCO2, and respiratory exchange ratio were plotted 1) over time (X-time) and 2) over VO2 (X-VO2).

Single-leg Wingate Test in children: reliability and optimal braking force.

Purpose: Single-leg cycle ergometry employing the protocol of the Wingate Test (WAnT) has been used to assess unilateral muscle power and leg-dominance. The objectives of this study were to determine the reliability of the single-leg WAnT (SLWAnT) and to establish optimal braking force for the SLWAnT.

Methods: Twenty female and 19 male subjects (prepubertals: 6.