Nutrition for post-exercise recovery. 1997

L M Burke
Australian Institute of Sport, ACT, Australia.

Recovery after exercise poses an important challenge to the modern athlete. Important issues include restoration of liver and muscle glycogen stores, and the replacement of fluid and electrolytes lost in sweat. Rapid resynthesis of muscle glycogen stores is aided by the immediate intake of carbohydrate (I g.kg-1 BM each 2 hours), particularly of high glycemic index carbohydrate foods, leading to a total intake over 24 hours of 7-10 g.kg-1 BM. Provided adequate carbohydrate is consumed it appears that the frequency of intake, the form (liquid versus solid) and the presence of other macronutrients does not affect the rate of glycogen storage. Practical considerations, such as the availability and appetite appeal of foods or drinks, and gastrointestinal comfort may determine ideal carbohydrate choices and intake patterns. Rehydration requires a special fluid intake plan since thirst and voluntary intake will not provide for full restoration of sweat losses in the acute phase (0-6 hr) of recovery. Steps should be taken to ensure that a supply of palatable drinks is available after exercise. Sweetened drinks are generally preferred and can contribute towards achieving carbohydrate intake goals. Replacement of sodium lost in sweat is important in maximising the retention of ingested fluids. A sodium content of 50-90 mmol.L-1 may be necessary for optimal rehydration; however commercial sports drinks are formulated with a more moderate sodium content (10-25 mmol.L-1). It may be necessary to consume 150% of fluid losses to allow for complete fluid restoration. Caffeine and alcohol containing beverages are not ideal rehydration fluids since they promote an increased rate of diuresis.

UI MeSH Term Description Entries
D008112 Liver Glycogen Glycogen stored in the liver. (Dorland, 28th ed) Hepatic Glycogen,Glycogen, Hepatic,Glycogen, Liver
D009747 Nutritional Physiological Phenomena The processes and properties of living organisms by which they take in and balance the use of nutritive materials for energy, heat production, or building material for the growth, maintenance, or repair of tissues and the nutritive properties of FOOD. Nutrition Physiological Phenomena,Nutrition Physiology,Nutrition Processes,Nutritional Physiology Phenomena,Nutrition Phenomena,Nutrition Physiological Concepts,Nutrition Physiological Phenomenon,Nutrition Process,Nutritional Phenomena,Nutritional Physiological Phenomenon,Nutritional Physiology,Nutritional Physiology Concepts,Nutritional Physiology Phenomenon,Nutritional Process,Nutritional Processes,Concept, Nutrition Physiological,Concept, Nutritional Physiology,Concepts, Nutrition Physiological,Concepts, Nutritional Physiology,Nutrition Physiological Concept,Nutritional Physiology Concept,Phenomena, Nutrition,Phenomena, Nutrition Physiological,Phenomena, Nutritional,Phenomena, Nutritional Physiological,Phenomena, Nutritional Physiology,Phenomenon, Nutrition Physiological,Phenomenon, Nutritional Physiological,Phenomenon, Nutritional Physiology,Physiological Concept, Nutrition,Physiological Concepts, Nutrition,Physiological Phenomena, Nutrition,Physiological Phenomena, Nutritional,Physiological Phenomenon, Nutrition,Physiological Phenomenon, Nutritional,Physiology Concept, Nutritional,Physiology Concepts, Nutritional,Physiology Phenomena, Nutritional,Physiology Phenomenon, Nutritional,Physiology, Nutrition,Physiology, Nutritional,Process, Nutrition,Process, Nutritional,Processes, Nutrition,Processes, Nutritional
D003681 Dehydration The condition that results from excessive loss of water from a living organism. Water Stress,Stress, Water
D004040 Dietary Carbohydrates Carbohydrates present in food comprising digestible sugars and starches and indigestible cellulose and other dietary fibers. The former are the major source of energy. The sugars are in beet and cane sugar, fruits, honey, sweet corn, corn syrup, milk and milk products, etc.; the starches are in cereal grains, legumes (FABACEAE), tubers, etc. (From Claudio & Lagua, Nutrition and Diet Therapy Dictionary, 3d ed, p32, p277) Carbohydrates, Dietary,Carbohydrate, Dietary,Dietary Carbohydrate
D006003 Glycogen
D006801 Humans Members of the species Homo sapiens. Homo sapiens,Man (Taxonomy),Human,Man, Modern,Modern Man
D015444 Exercise Physical activity which is usually regular and done with the intention of improving or maintaining PHYSICAL FITNESS or HEALTH. Contrast with PHYSICAL EXERTION which is concerned largely with the physiologic and metabolic response to energy expenditure. Aerobic Exercise,Exercise, Aerobic,Exercise, Isometric,Exercise, Physical,Isometric Exercise,Physical Activity,Acute Exercise,Exercise Training,Activities, Physical,Activity, Physical,Acute Exercises,Aerobic Exercises,Exercise Trainings,Exercise, Acute,Exercises,Exercises, Acute,Exercises, Aerobic,Exercises, Isometric,Exercises, Physical,Isometric Exercises,Physical Activities,Physical Exercise,Physical Exercises,Training, Exercise,Trainings, Exercise
D015532 Rehydration Solutions Fluids restored to the body in order to maintain normal water-electrolyte balance. Rehydration Solution,Solutions, Rehydration,Solution, Rehydration
D018482 Muscle, Skeletal A subtype of striated muscle, attached by TENDONS to the SKELETON. Skeletal muscles are innervated and their movement can be consciously controlled. They are also called voluntary muscles. Anterior Tibial Muscle,Gastrocnemius Muscle,Muscle, Voluntary,Plantaris Muscle,Skeletal Muscle,Soleus Muscle,Muscle, Anterior Tibial,Muscle, Gastrocnemius,Muscle, Plantaris,Muscle, Soleus,Muscles, Skeletal,Muscles, Voluntary,Skeletal Muscles,Tibial Muscle, Anterior,Voluntary Muscle,Voluntary Muscles
D018763 Muscle Fatigue A state arrived at through prolonged and strong contraction of a muscle. Studies in athletes during prolonged submaximal exercise have shown that muscle fatigue increases in almost direct proportion to the rate of muscle glycogen depletion. Muscle fatigue in short-term maximal exercise is associated with oxygen lack and an increased level of blood and muscle lactic acid, and an accompanying increase in hydrogen-ion concentration in the exercised muscle. Fatigue, Muscle,Muscular Fatigue,Fatigue, Muscular

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