Rao G M, Girija N, Chari N
Physiol Bohemoslov. 1981;30(4):359-64.
The heart muscle is characterized by a high glycogen, lactic acid, lipid and fatty acids content and by high activities of phosphorylase , LDH, SDH, and GDH as an adaptation to its dynamic action of constantly pumping blood. The leg muscles behave as "fast muscles" and are characterized by having high myofibrillar. ATPase activity and relatively high activities of LDH, SDH and GDH as compared to the claw muscle which may explain their repetitive action during walking. The claw muscle is adapted to a tonic function as revealed by its low myofibrillar ATPase activity, high glycogen, high lipid and low values of LDH, SDH and GDH which further support its tonic action of short duration.
心肌的特点是糖原、乳酸、脂质和脂肪酸含量高，磷酸化酶、乳酸脱氢酶（LDH）、琥珀酸脱氢酶（SDH）和谷氨酸脱氢酶（GDH）活性高，这是对其持续泵血动态作用的一种适应。腿部肌肉表现为“快肌”，其特点是肌原纤维ATP酶活性高，与爪肌相比，乳酸脱氢酶、琥珀酸脱氢酶和谷氨酸脱氢酶的活性相对较高，这可能解释了它们在行走过程中的重复动作。爪肌适应紧张性功能，其肌原纤维ATP酶活性低、糖原含量高、脂质含量高，乳酸脱氢酶、琥珀酸脱氢酶和谷氨酸脱氢酶的值低，这进一步支持了其短时间的紧张性作用。
