No elevation in 1[lactate] or change in RERmax at the aerobic capacity was evident after training (Table 1). Muscleglycolyticfluxduringexercisewas 50%lowerwith ET in these subjects (Jubrias et al. 2001). In addition, no change in muscle fibre types was found (Jubrias et al. 2001). Thus, there was no evidence for higher glycolytic ATP production or a shift to more efficient muscle fibres. Instead, the increase in Pmax was associated with the rise