Fig. 18.

Sequences of detraining changes in citrate synthase (cit syn) and lactate dehydrogenase (LDH) in type I and type II vastus lateralis fibers from cyclist A (Holloszy). Fiber types are indicated by I and II. Each point is average ± SE for 6–23 fibers in the case of LDH and 6–16 fibers (chosen from the same groups) in the case of citrate synthase. Control indicates average for vastus lateralis fibers from both controls. Activities are in mol·kg dry wt⁻¹·h⁻¹ at 20°C. Note scale for citrate synthase is 0–8 instead of 0–80. [Reproduced from Chi et al. (16) with permission.]