Nutritional aspects of post exercise skeletal muscle glycogen synthesis in horses: a comparative review.

The research article provides a comparative analysis of muscle glycogen synthesis (the process through which the body creates and stores energy) following exercise in horses, humans, and rodents. The study suggests that glycogen synthesis in horses is significantly slower compared to humans and rats, despite a diet high in carbohydrates.

Understanding Muscle Glycogen Synthesis

• The research focuses on muscle glycogen synthesis, which is the process of creating glycogen, a form of energy storage, in the muscles.
• It notes that carbohydrate stored as muscle glycogen is the main source of energy for intense and prolonged exercise in mammals such as humans, horses, and dogs.
• The body uses this glycogen stored in the muscles for ATP (adenosine triphosphate) production, which fuels cellular activities and hence physical exercise.

Carbohydrate Utilisation and Glycogen Synthesis in Horses

• The study has found that in horses, muscle glycogen synthesis is 2-3 times slower than in humans and rats, even when the diet is rich in soluble carbohydrates.
• The researchers highlight that there seem to be significant differences in the metabolism of carbohydrates and glycogen in horses compared to other mammals.
• The data suggests that many conclusions derived from human exercise physiology studies may not be applicable to horses due to these differences.

Exploring Feeding Strategies and Dietary Implications

• The article provides a comprehensive summary of research on muscle glycogen synthesis in horses, humans, and rodents, highlighting the potential species differences in carbohydrate absorption and use.
• The study delves into the issues related to feeding horses with a high soluble carbohydrate diet, indicating potential drawbacks or inefficiencies in this approach.
• It suggests exploring alternative feeding strategies for horses, including supplementation with protein, long-chain and short-chain fatty acids,
• Besides, the importance of rehydration is also stressed, underlining that replenishing fluids is critical for optimal recovery and replenishment of glycogen stores post-exercise.