Figure 4.

Plasma concentrations of lactate and ammonia in cubital venous blood at rest and after exhaustive static handgrip exercise at 30 % of MVC in six patients with McArdle's disease (□) and six matched healthy controls (○). Values are means ±s.e.m. Ammonia data from the patient with combined myophosphorylase and myoadenylate deaminase deficiency (▵) are shown separately from those of the other five McArdle patients in the top panel. All other data points are based on findings in six subjects in each group.