bars, bagels, graham crackers) in addition to liquid foods and fluids.71
Recreational athletes oſten travel
away from their home training base for races, which can create uncertainly in their results. Tey may train in a hot, humid environment and travel to race in a cooler, drier part of the country or world. Tey may train at low elevation in an area with little elevation change but race in the mountains. Tis makes it ex- tremely important to gather data (eg, average heart rates, sweat tests) year-round, not only during the time of year the race will occur. Tis might also dictate the type of fueling and hydration plan the athlete should practice at home. For example, if there will be a large amount of elevation change, liquid nutrition might be easier to consume while climbing vs eating solid food. If the athlete will race at altitude, he or she may require a higher energy intake compared with what they would consume where they normally train. Tese are just a few of the reasons it is important to know about the environmental conditions where the race will occur, the time of year, and some details about the race course.
After Training
Restoring muscle and liver glycogen stores, replacing fluid and electrolyte losses, and promoting muscle re- pair are important for recovery aſter strenuous endurance training and multiday events. When there is less than 8 hours between workouts or competitions that deplete muscle glycogen stores,
the athlete should start consuming carbohydrate immediately aſter the first exercise session to maximize the effective recovery time between sessions. Te athlete should consume carbohydrate at a rate of 1 to 1.2 g/kg/h for the first 4 hours aſter glycogen-depleting exercise. Consuming small amounts of carbo- hydrate frequently (every 15 to 30 minutes) further enhances muscle glycogen synthesis. During longer periods of recovery (24 hours), it does not matter how carbohydrate intake is spaced throughout the day as long as the athlete consumes adequate carbohydrate and energy.64
Liquid forms of carbohydrate may be de-
sirable when athletes have decreased appetites due to fatigue or dehydration. In addition to carbohydrate, the athlete’s initial recovery snack or meal should include 15 to 25 g high-quality protein.64
Te protein can be consumed through liquids, such as a recovery drink, or through
solid food, such as a meal or snack. Consuming protein with recovery snacks and meals helps to increase net muscle protein balance, promote muscle tissue repair, and enhance adaptations involving synthesis of new proteins.72
kg/h) also accelerates muscle glycogen restoration.73 lete’s daily protein and carbohydrate requirements.13
Adding a small amount of protein (~0.3 g/kg/h) to a suboptimal carbohydrate intake (<1 g/ Recovery meals and snacks contribute toward the ath- In consideration of multiday events, García-Rovés and
colleagues noted that the Tour of Spain cyclists consumed carbohydrate at a rate of 1.1 g/kg/h and protein at a rate of 0.35 g/kg/h for the first 6 hours aſter the race.17
Tis combined dose of carbohydrate and protein
helped promote muscle glycogen restoration and muscle tissue repair. Te foods consumed during recovery meals and snacks should contribute to the athlete’s overall nutri-
ent intake. Nutritious carbohydrate-rich foods and lean sources of protein and dairy also contain vitamins and minerals that are essential for health and performance. Tese micronutrients are important for post- exercise recovery processes. Athletes should avoid consuming large amounts of foods high in fat or protein when total energy requirements or gastrointestinal distress limits food intake during recovery. Tese foods can displace carbohydrate-rich foods and reduce muscle glycogen storage.13 It is common for endurance athletes not to feel hungry aſter long training sessions, especially in hot
weather. Working with them to try a liquid recovery option could be important to improve compliance and ensure that the athlete consumes an adequate amount of recovery calories and macronutrients.
FLUID AND SODIUM NEEDS DURING TRAINING AND RACING
Tere are limited data on fluid and sodium intakes and body-weight changes during endurance events, although new research is being conducted. As illustrated in the daily nutrition section of this chap- ter, fluid and sodium requirements for endurance athletes have large degrees of variability. Te same holds true for during training and racing, thereby making it necessary to consider each athlete’s needs
502 SECTION 4: SPORTS-SPECIFIC NUTRITION GUIDELINES
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