Effect of alcohol consumption on in vivo-determined protein synthesis in gastrocnemius of adult and aged female rats: total protein synthesis (A), sarcoplasmic protein synthesis (B), and myofibrillar protein synthesis (C). Values are expressed as means ± SE; n = 8 or 9 rats per group. a,b,cValues with different letters are statistically different (P < 0.05), while values with the same letter are not statistically different.