As one coach aptly stated, “Too many athletes show up for training, but they don’t show up for meals. They might as well not show up for training.”  So true! Pre-exercise fueling makes a big difference in terms of how well athletes can enhance their performance. Food eaten within the hour before exercise does get put to good use, helping athletes train harder and longer. (It also helps curb the post-exercise hunger and sugar cravings that can easily end up as overeating.)

You can only perform at your best if you are well-fueled on a daily basis. Yet too many athletes wonder what (and if) they should eat before exercise. Rowers want to know what to grab (if anything) as they roll out of bed and head to the boathouse. Triathletes ask about how to fuel for their second workout of the day. Runners want a pre-exercise snack that will not cause intestinal distress.

No one pre-exercise food is best for all athletes. Hence, you want to experiment to learn which foods settle best in your body. Here is some guidance for planning effective pre-exercise fueling.

First, take steps to train your gut (not just your heart, lungs, and muscles).

I’ve talked to many athletes (particularly in running sports) who purposefully choose to not eat within hours of exercise as a means to avoid gastro-intestinal (GI) upset. While this may seem like a good idea for the short term, it’s a bad idea if you want to optimize performance for the long run.

The intestinal tract is trainable and can digest food during exercise that lasts >30 minutes. (The gut shuts down during short, intense bouts, so plan to eat 2 to 4 hours in advance of those workouts!) To train your gut, start by nibbling on 50 to 100 calories of crackers, pretzels, or any simple-to-digest carb within the hour pre-exercise. Once your GI tract tolerates that snack, titrate the calories up to 200 to 300—maybe a packet of oatmeal, a granola bar, or an English muffin (with some peanut butter on it for longer-lasting energy). Experiment with a variety of fruits (applesauce), vegetables (sweet potato), and grains (leftover pasta) to learn what works best for your body. You are an experiment of one.

For some athletes, GI distress can be caused by the inability to thoroughly digest specific types of carbohydrates called FODMAPS (Fermentable Oligo-, Di-, Mono-saccharides And Polyols). Common sources of FODMAPs include garlic and onion (found in the spaghetti sauce & garlic bread often enjoyed the night before a big work-out), as well as apples and raspberries. For more in-depth FODMAP information, visit www.KateScarlata.com.

Meal timing matters. When you eat matters as much as what you eat.

Too many athletes eat backwards. That is, they undereat during the active part of their day, only to consume a huge meal before going to bed. Two standard excuses for skimpy daytime fueling include:

• #1: “I look forward to a big dinner. That’s when I finally have time to relax and reward myself for having survived yet-another busy day.”
• #2: “I want to lose weight. I can stick to my diet at breakfast & lunch, but I blow it at night. Evening eating is my downfall.”
• If either scenario sounds familiar, think again. You are going to consume the calories eventually, so you might as well plan to eat them when they can be put to good use.

Morning exercisers want to eat part of their breakfast (granola bar & latte) before they workout and then the rest of their breakfast afterwards (oatmeal, banana & PB). They then want to plan an early hearty lunch at 11:00ish and a second lunch/hearty snack at 3:00ish. The goal of the second lunch is to both fuel the upcoming workout and curb the appetite for dinner so they can then be content to eat a lighter dinner—and likely better sleep than if they had stuffed themselves with a big meal.

Athletes who do double workouts really want to eat a hearty early lunch to refuel from the morning session and prepare for the second (afternoon) session. They’ll have 4 to 5 hours to readily digest lunch before they train again.

You might need to plan time to eat.

Busy athletes who juggle work and/or school plus double workouts often complain they have no time to eat. Sometimes that is true and sometimes they choose to sleep a few more minutes (leaving no time for breakfast) or keep working on a project (leaving no time for lunch). Those are both choices. They could have chosen to make fueling more of a priority.

If you struggle with finding time to eat, plan ahead and schedule lunch time in your daily calendar, or set an alarm for snack-time before your 4:00 pm workout. Maybe you can convert your afternoon coffee into a latte, grab a banana, or eat an energy bar while driving to the gym or reading email? Anything is better than nothing.

If you go from work (or school) to afternoon workout, the extra-large lunch will offer fuel for an energetic afternoon workout. Alternatively, plan to have a 3:00 Second Lunch readily available (apple + cheese+ crackers; half or whole PB & J sandwich; yogurt + granola + banana).

Any fuel—even cookies or candy—is better than exercising on empty. You’ll even perform better after having enjoyed a sweet treat as opposed to having eaten nothing. (Research suggests sugar/candy eaten within 15-minutes pre-exercise can actually boost performance and not simply contribute to a sugar “crash.”)

Final thoughts

For athletes, every meal has a purpose. You are either fueling up to prepare for exercise, or you are refueling afterwards to both recover from the work-out and prepare for your next session. Fueling properly takes time and energy. You need to be responsible! Do not brush off meals and snacks as if they are optional inconveniences in your busy day.

Proper fueling requires time-management skills, particularly for students and athletes doing double sessions. You want to schedule time (rest days? weekends?) to food shop and batch-cook so you can have the right foods in the right places at the right times. You (almost) always find time to exercise; you must also find time to fuel properly.

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for info.

Once upon a time, food used to be one of life’s pleasures and athletes would eat with gusto. Today, food has become a source of anxiety—Will it ruin my health? Make me fat? Hurt my performance? Food has also become a source of shame—I shouldn’t have eaten so much. I eat well during the day but I’m so bad at night. I’m afraid I’ll eat too much pie at Thanksgiving.

A survey of Gen Z-ers (ages 11-26; born between 1997 and 2012) indicates 60% feel pressure to eat in a way that shows others they eat “healthy.” These student athletes and recent grads —many of whom are fitness exercisers and athletes—feel pressure from social media, if not from their parents, peers, and teammates, to choose a perfect diet (i.e., no chips, cookies, burgers, etc.). And then the binge-eating and sneak-eating happens: shame, guilt, embarrassment.

At the 2023 Food & Nutrition Conference & Exposition (FNCE) of the Academy of Nutrition and Dietetics (the nation’s largest group of nutrition professionals), food shaming was a hot topic. (This topic that is near and dear to the hearts of most registered dietitians (RDs), given “everyone” seems to scrutinize what we eat. Ha!) Food shaming happens not just among athletes at team meals, but also at family dinners, school lunches, and office coffee breaks. Maybe you, too, have experienced shame-producing food situations where you felt like you did something wrong because you ate, let’s say, a sandwich (tsk, tsk) at a team meal, while your teammates ate lettuce leaves?

Athletes can easily end up feeling awkward, inadequate, and embarrassed about their food choices. As one runner shared, “After visiting xxx college for a weekend, I decided against going there because the women on the track team nibbled on only dry salads with grilled chicken for lunch and dinner. I felt very awkward as I refueled my tired muscles with a plateful of pasta with meat balls.”

Unfortunately, in today’s world, we live with a lot of morality around food. Morality can easily spoil one’s peaceful relationship with food. Athletes who have been food-shamed start to focus on eating only (society-defined) “good” foods and eliminate the “bad.” Consequences of being food shamed include feeling bad about themselves, a desire to eat alone, and increased self-criticism of perceived body flaws. (“No wonder I’m so fat. I should eat better…) The more shame athletes feel about their food choices, the more likely they are to restrict what they eat and cut out “white” foods, fast foods, and all fun foods. This can become a slippery slope into disordered eating, if not an outright eating disorder.

While many athletes might wish they could “just eat normally”, they often hold too much shame to seek guidance from the healthcare professional who could help them: a registered dietitian (RD) who is board-certified in sports dietetics (CSSD). If they feel guilty, anxious, and vulnerable regarding their food intake, they’ll fear being judged. “I would feel too embarrassed to honestly tell a dietitian about what I eat…” If that holds true for you, rest assured, a professional RD will not make hurtful or judge-y, guilt-inducing remarks. (Most RDs have been food shamed themselves for enjoying fun foods, tsk-tsk, like Thanksgiving pies and holiday cookies. They understand how uncomfortable it can feel.)

Food-shamed athletes prefer to eat alone, deprive themselves of their “unhealthy” foods—and end up shamefully over-eating them at a time of weakness. According to FNCE speaker Tammy Beasley RD, shame thrives in secret, lonely places of over-indulgence. The RD’s job is to transform that shame into self-compassion and self-kindness; to let athletes know they are not alone; they are not the only humans who have devoured a pint of ice cream in one sitting.

Solutions

To derail the cycle of food shaming, we need to abandon food morality. Food is fuel; it is not good or bad and what you eat does not determine if you are good or bad. Your goal is enjoy a balanced intake of a variety of nutrient-dense foods with some fun foods included. Please stop scrutinizing and “perfecting” your food intake. Instead, focus on fueling for optimal performance. Trust that eating bread and pasta will not result in your body exploding into obesity, but rather will fuel your muscles and enhance your athletic ability. A cookie or two will not ruin your health forever.

Social media is the number one instigator of food shaming. Given almost all of us use social media, and 57% use it more than 5 hours a week, we can see how food shaming can spiral out of control. Instagram photos with “healthy foods” can easily make anyone feel bad about choosing “imperfect” foods with less nutrient density. Hence, a good place to stop food shaming is at the source: limit the time you spend scrolling through endless triggering posts—and stop following triggering influencers.

Moving Forward

Three tips to help transform your “shameful” eating into pleasurable fueling include:

• Let go of being a perfectionist and enjoy being human, like the rest of us. Stop trying to eat a “perfect diet.” An excellent diet will do the job. The goal is 85-90% quality-calories and 10-15% “whatever”, such as an apple some days, and apple pie on other days.

• An excellent sports diet can include some “evil” sugar. No need to avoid all sweets and treats! The US Dietary Guidelines allow for 10% of total calories to come from added sugar. That’s 240 to 300 calories (60-75 grams) of added sugar per day for most athletes, if desired. That’s the amount of sugar in 3 gels, 36 ounces of sport drink, or 24 gummi bears. Sugar in any form helps (re)fuel muscles during and after a hard workout.

• Enjoy a satisfying breakfast and lunch. Stop eating when your body feels content, not just when the food is gone, you think you should, or you’re feeling ashamed because you are eating more than your peers. Adequate daytime meals can curb afternoon and evening (shame-inducing) binges.

• Finally, bring fun back into your food-style. Yes, please shamelessly enjoy fun foods like Thanksgiving pie and Grandma’s special holiday cookies, keeping balance and moderation in mind.

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for info.

Staying on top of the latest sports nutrition news can be a full-time job. Between conferences, webinars, and journal articles, I learn a lot of information that I like to translate into practical tips to share with athletes, like you! Enjoy this news you can use! (The research was presented at the International Sport & Exercise Nutrition Conference in the UK.)

If you try to “stay away” from peanut butter, deeming it to be fattening, think again! Peanut butter—and peanuts in any form—contribute to no more weight gain than the same number of calories from carbohydrate-rich snacks. In a 10-week weight-gain study that included lifting weights three times a week, 28 athletic women and men (average age, 25.) consumed:
— an extra 500 calories of peanuts and peanut butter-based snacks, or
— an extra 500 calories of peanut-free carb-based snack foods (such as pretzels, fruit chews, bagels).

The carb-snackers gained about 6 pounds; the peanut eaters gained only about 3.5 pounds. How could this be?

One explanation is the fiber and fat in peanut butter is satiating. That means, it keeps you feeling fed for longer than fat-free foods, such as pretzels. Peanut butter can curb your appetite, so you end up eating fewer calories overall for the day.

This study helps confirm why I vote peanut butter to be one of the best sports foods around (assuming you are not allergic to it)! Peanut butter requires no refrigeration, is anti-inflammatory, nutrient rich, inexpensive, and most importantly, yummy. How about enjoying more peanut butter on bananas for your morning and afternoon snacks?

When an athlete goes on a low-carb / low-calorie diet, their bones also go on a diet. In a study with 327 runners (ages 18-35) who trained 8 or more hours a week, those who restricted carbs and/or trained without having first eaten, experienced 1.5 times more bone injuries More research is needed to learn how carbs and calories can influence bone health. In the meantime, enjoy carb-based grains, fruits and veggies at every meal.

With global warming, athletes who exercise in the heat should take steps to prevent problems related to elevated body temperature. One tip is to pre-cool your body prior to exercise. Try drinking ice water or slushies, or suck on ice chips. Doing so might help you have greater endurance.

A study of professional female soccer players reports they burned about 2,900 calories per day. Of that, about 1,400 calories supported their resting metabolic rate (calories needed to be alive) and about 1,200 calories were burned during exercise, the rest supported general daily activities. This equates to about three 700 to 800 calorie meals per day plus two 200 to 300 calorie snacks. That’s a lot of food! For athletes who may wonder, Why do I feel hungry all the time?, the answer might be because your body is hungry!

When female athletes undereat, they commonly stop having regular menstrual periods. When male athletes undereat, they experience hormonal changes that can lead to loss of sex drive. In a study with 10 healthy, active males (25 years.) who strictly dieted for five days—they ate less food and exercised more—the calorie deficit caused significant physiological changes. The men lost about 6 pounds (losing more muscle than fat, as happens with quick weight loss). Their thyroid hormones dropped, as did their testosterone levels.

Restrictive dieting not only reduces calorie intake, but also intake of protein, calcium, iron, zinc, and many other valuable nutrients needed to maintain optimal health and performance. Don’t consciously restrict your eating and stop eating at meals just because you think you should. Listen to your body; stop eating because you feel content, not just because the food is gone.

Athletes in endurance sports (such as runners, triathletes) and jumping sports (such as basketball and volleyball players) prefer to be light to enhance their performance. The problem is long-term restrictive eating can contribute to health issues. In a study comparing weight-conscious male athletes (age 24.) to a group of fitness exercisers, the athletes were leaner, but they had lower levels of thyroid hormone (a sign they were conserving energy). They also had weaker bones. If you skimp on food to be lean, your best bet is to seek guidance from a registered dietitian (RD) who specializes in sports dietetics (CSSD). This professional can help you healthfully achieve your weight goals. Use the referral network at eatright.org to find your local sports dietitian.

Personal trainers commonly believe they should have a “perfect” physique to achieve success in their careers. This can put them at high risk for developing eating disorders and disordered eating. Among personal trainers who responded to recruitment messages on Twitter and Instagram, 15% reported high levels of disordered eating behaviors (binge-eating, restrictive dieting, over-exercising). Sadly, these trainers are seen as role models. We need authentic fitness leaders who represent a variety of sizes and shapes the average exerciser can attain and maintain. Don’t be fooled; a “perfect body” generally comes with a high cost.

Some women gain “belly fat” at the time of menopause. This might be related to midlife lifestyle changes and aging, as well as to hormonal shifts. Peri-menopausal women who had big dinners and snacked frequently at the end of the day tended to have more belly fat than those who front-loaded their calories. One suggested weight management solution (for both women and men) is to eat less at night. A satiating high-protein breakfast can help reduce the urge to overeat at the end of the day. Peanut butter on a bagel with a side of Greek yogurt, anyone?

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for info.

Of all the questions athletes ask me, “What about sugar…?” is at the top of the list. You likely have been bombarded with messages that sugar is evil, feeds cancer, causes obesity, ruins health, and should be avoided at all costs. Yet, athletes also hear that sugar fuels muscles during exercise, is the main ingredient in commercial sports foods, and enhances recovery from hard workouts. Let’s look at some sugar myths and misconceptions, as well as new technology that can measure your personal response to sugary foods.

Is sugar addictive?
No. While sugar lights up pleasure centers in the brain, sugar is not an addictive drug like cocaine. Sugar cravings can often be curbed by preventing hunger. Hunger triggers cravings for sugary foods and the urge to overeat. Hungry athletes can easily devour a lot of gummy bears or Oreos in the blink of an eye.
If you believe you are addicted to sugar, do this experiment: rearrange your eating patterns to enjoy a king-sized high protein breakfast (3-egg cheese omelet + Greek yogurt + fruit + granola) followed by a satisfying protein-rich lunch (peanut butter & banana sandwich + glass of milk), and you will quickly notice your afternoon and evening sugar cravings dissipate (that is, unless you are eating to manage stress and smother feelings—as opposed to enjoying food for fuel).

Is sugar fattening?
No. Excess calories of any type are fattening. Many athletes tell me that despite eating only “healthy” foods (i.e., no sugary sweets), they are not losing weight. They could simply be swapping 100 calories of gummy bears for 100 calories of grapes or 100 calories of nuts. No calorie deficit there.
Take note: the conversion of excess calories of sugar into body fat is actually a tough conversion (as compared to the conversion of excess calories of dietary fat into body fat). Sugar often comes with fat (cookies, ice cream, chocolate) Hence, overeating gummy bears could be less fattening than overeating fatty chips. (But first, curb the urge to overeat sugary-fatty foods by enjoying a king-sized breakfast!!!)

I’ve heard sugar feeds cancer cells. Should I avoid sugar to reduce my risk of getting cancer? No. Sugar feeds all cells, not just cancer cells. Giving sugar to cancer cells does not make them grow faster, nor does depriving them of sugar curb their growth. A diet rich in fruits, veggies, and whole grains reduces the risk of cancer—even though these foods all end up as sugar in your blood. (Yes, all grains and plant-foods—“carbs”—digest into sugar.) Sugary foods can be linked to obesity, and obesity can be linked to cancer. Cancer patients who are prescribed prednisone as part of their treatment may need to limit sugar because the medication can elevate blood sugar, but that is a different story.

Does sugar cause diabetes?
No. Diabetes-Type 1 happens when the pancreas makes inadequate insulin to transport sugar out of the blood and into the muscles. Diabetes-Type II happens when the muscles do not respond normally to insulin. This often happens with people who are overfat and underfit. In comparison, most athletic people maintain normal blood glucose levels.

Should athletes be concerned about “sugar spikes”?
Generally, not. After you eat any type of carb (fruit, veggie, grain, sugary or starchy food), your blood sugar (blood glucose) will rise as the sugar moves from your gut into the blood stream. Blood glucose gets used by brain, muscle, liver, and organs. This “spike” is normal, and the body has a complex system of checks and balances to keep it within a normal range (>70 and <180 mg/dL)-After hard exercise, a spike in blood glucose is a normal physiological response. 

Will monitoring my blood sugar level help me perform better?
Some endurance athletes are measuring their sugar levels with a continuous glucose monitor (CGM). The device is sort of like a fuel gauge that can help them figure out if they are under-fueled. This knowledge might inspire athletes who under-eat to fuel better to perform better, but we need much more research to validate this hypothesis.

Most research with CGMs has been done on people with diabetes. They need to know if their blood glucose is too low (causing shakiness and hypoglycemic sweats) or too high (causing damage to tiny blood vessels in the eyes, kidneys and other organs—with long-term complications of organ failure and blindness, among other health issues). For them, CGMs can be health-saving, whereas for athletes, the data is more of a matter of curiosity.

How does a CGM work?
The athlete sticks on the back of the arm a small circular patch (a sensor) which has a very thin filament that painlessly goes under the skin and measures glucose between cells. The sensor connects to a cell phone app that handles the data. The technology can help validate if fatigue is related to low glucose and inadequate fuel.

While a CGM can help you learn about your body’s response to carbs, listening to your body’s messages—not looking at numbers on your cell phone—is the better way to go. Simply pay attention to how you feel: Are you droopy? Edgy? Unable to focus on the task at hand? If yes, you are likely low on fuel and your glucose is low.

I enjoy technology: heart rate monitors, sleep trackers, GPS watches. Where can I buy a CGM?
Search online or go to a drug store. Two popular brands are FreeStyle Libre and Dexcom. SuperSapiens.com offers abundant info.

Before FOMO (Fear of Missing Out) nudges you to jump on the bandwagon, my advice is be sure this would be a smart choice for you. Some athletes feel driven to obsessively monitor their glucose levels. They can easily feel stressed and become glucorexic. CGMs are best used for one to two weeks by athletes who have a specific performance problem they want to resolve, such as, why do I bonk 15 miles into a 26.2 mile marathon? A CGM can identify a need to adjust food intake. Will this enhance performance? Stay tuned for more research with athletes!

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for info

At the May 2023 American College of Sports Medicine Annual Meeting (ACSM; acsm.org), more than 3,000 sports medicine professionals and researchers from around the globe gathered to share knowledge. Several sports nutrition presentations offered updates that might be of interest you. Here are summaries from a few of those presentations.

Body Composition

• Historically, sports teams would routinely have their body fat measured, with the data posted for all to see. Many athletes experienced intense pressure both internally and externally to have a lean physique. Often, the measurements were not even used to assess for extreme leanness and under-nutrition.

• Today, we know that athletic performance is not dictated primarily by an athlete’s percent body fat but rather by volume of training, mental state, adequacy of sleep, and sufficient food intake—among other factors.

• Today’s recommendations state measurement of body fat should only be done if 1) the athlete consents, 2) the measurement is done in private by a trained measurer using the most reliable method for that particular athlete, 3) the information is discussed in confidence with the athlete and health care team, and 4) the mental and physical health of the athlete is top priority.

• Athletes, please understand you will perform better if you focus on getting stronger and gaining power, as opposed to restricting food. If the cost of losing body fat is having to train for long periods of time with poorly fueled muscles, your performance will suffer and your risk of injuries will increase.

Ultra-Processed Foods and Athletes

• About 95% of athletes enjoy ultra-processed foods (UPFs) such as instant oatmeal, boxed mac ‘n cheese, chips, etc.. The average American consumes about 60% of total calories from UPFs; they are readily available, easy to prepare, have a long shelf-life, and can save time.

• What do athletes need to know about UPFs? First, let’s define what they are: UPFs contain substances that are rarely used in home cooking—emulsifiers, thickeners, protein isolates, etc. You’ll find those substances in breakfast cereals, energy bars, fruit yogurts, commercially baked breads, and many grab-and-go foods that busy athletes commonly consume.

• UPFs also include sport drinks and protein powders. They are not only convenient, but also digest easily. During extended exercise, when athletes need quick and easy carbs, a gel, chomp, or sports drink can easily do the job. Energy bars can effortlessly get tucked into pockets. While a swig of maple syrup or a banana can be equally energizing, UPFs are generally easier to deal with.

• In the general population, UPFs are linked with obesity. The more UPFs consumed, the greater the risk for weight gain. In a carefully controlled study with menus matched for carbs, protein, fat, fiber, and palatability, the UPF-menu led to weight gain. The UPF-eaters consumed about 500 additional calories a day when compared to when they ate from the whole foods menu—and they gained about two pounds in two weeks. Yikes! Why did that happen? Are UPFs easier to overeat because they require less chewing? Can be eaten quickly? Are super-tasty so you want to keep eating more of them?

The answer is yet to be determined. Until such time, your better bet is to consume homemade foods whenever possible. The less packaging in your grocery cart, the better for your waistline (most likely) and if not, the better for the environment (less trash in landfills).

That said, balance & moderation pave a prudent path. There’s a time and a place for UPFs. If you have a low protein intake, grabbing a protein bar on the run can help you hit your 20-to-30-gram protein target for the meal. If you consume little red meat, an iron-enriched breakfast cereal like GrapeNuts can fill that gap. For traveling athletes, carrying bars, gels, and carb-based recovery drinks are “safe” (uncontaminated). Safety matters!

Protein

• Muscle is constantly being broken down into amino acids and then rebuilt into new muscle tissue. Resistance exercise, such as weightlifting, stimulates the synthesis of new muscle during the 24-hours post-exercise. Including ~0.15 grams high-quality protein per pound of body weight (0.3 g/kg) per meal maximizes muscle protein synthesis. That comes to about 20 grams protein for a 120-lb (54.5 kg) athlete and ~30 grams for a 180-lb (82 kg) athlete. Athletes can easily consume that amount in (chocolate) milk, eggs, or tofu.

• Protein’s food matrix, with all the bioactive compounds that accompany the amino acids in natural foods, has a positive influence on the muscle-building effectiveness of the amino acids. For example, eating a whole egg, not just the egg white, more effectively builds muscle tissue. Hence, your best bet is to choose protein rich foods in their natural state, such as nuts, yogurt, tuna, beans & rice, etc. Whole foods are preferable to the protein isolates in powders and bars.

• Including protein at each meal and snack also offers benefits. Many athletes eat too little protein at breakfast and lunch, then devour 2 to 3 chicken breasts at dinner. They’d be better off enjoying eggs along with oatmeal at breakfast, lentil soup with the lunchtime salad, and peanut butter with the banana for afternoon snack.

• Vegan athletes can indeed consume adequate protein if they are responsible. A vegan meal with just pasta and greens doesn’t do the job. How much protein from plants is enough? The goal is ~1 gram plant-protein/lb (2.1 g/kg) body weight per day. For a 120-lb (54.5 kg) athlete this comes to about 30 grams per meal plus 10 to 15 grams in each of two snacks.

The information on food labels tells the grams protein/serving, as does a quick google-search (protein in a 1/2 cup of hummus). Don’t be among the many athletes who comment “most Americans consume way too much protein” and make little effort to replace chicken with enough beans. A big dollop (1/2 c) of hummus with 8 grams of protein does not equate to the 35 grams of protein in a small (4 oz) chicken breast. Vegans, educate yourself!

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for more info.

The American College of Sports (ACSM.org) is a professional organization for sport science researchers, exercise physiologists, dietitians, doctors, and athlete care-providers Each year, at ACSM’s Annual Meeting, more than 3,000 sports medicine professionals and scientists from around the globe gather to present their latest research. At this year’s meeting (May 30-June 2, 2023, Denver, Colorado), a lively 10 Questions / 10 Experts session hosted by Professionals in Nutrition for Exercise and Science (PINESNutrition.org, a global organization for sport nutritionists) addressed some current hot topics. Below is a summary of the key points that might be of interest.

Continuous Glucose Monitors

Continuous glucose monitors (CGM) can help athletes determine the best fueling tactics to maintain their blood glucose levels within an energizing range and ideally reduce needless bonking. This can be very helpful during endurance exercise such as long runs or cycling events. Unfortunately, CGMs have yet to be perfected for athletes. The monitors can easily get dislodged from the body and some studies show a >15% failure rate. The sport of cycling has banned CGMs during races, but many cyclists use them during training to learn how to “read” body signals.

Pre-sleep protein

While extra evening protein is unlikely to offer a winning edge, it also will not cause harm, nor will it convert into body fat. Research to date shows that pre-sleep protein simply allows another opportunity to meet daily protein goals. More research is needed to determine if consuming pre -sleep protein will help enhance muscle recovery, tissue repair, sleep, or performance.

Free amino acids and bioactive peptides

When compared to the protein in whole foods, free amino acids are slightly less effective for muscle protein synthesis. Consuming protein within its natural food matrix is best. Plus, free amino acids taste terrible (although they have improved over the years).

Bioactive peptides (2-3 amino acids linked together) are available to purchase but they lack research to validate any potential benefits. Why bother…?

Bicarbonate supplementation

With high-intensity sports, sodium bicarbonate might offer a 1% to 2% improvement in performance. The standard dose is 0.3 to 0.5 g/kg body weight; the higher the dose, the greater the increase in performance—as long as the athlete can tolerate it. Capsules that bypass the gut help resolve gastro-intestinal issues, and potentially sodium bicarbonate encapsulated in a gel may help even provide further protection from side effects. Another option that bypasses the gut is sodium bicarbonate in the form of a lotion. The athlete applies it 20 minutes before high intensity exercise. The lotion feels nice, but the specific dose that actually gets absorbed is unknown.

Lighter, leaner = Faster, better

While lighter and leaner “works” to a certain extent to enhance performance, the cost of being too light and too lean can take its toll. The less food an athlete consumes, the less protein, carbohydrate, fat, vitamins, and minerals the athlete consumes. This can hurt performance and recovery, while enhancing the risk of getting injured.

A study with elite race walkers reported no performance benefits (nor detriments) among the dieting athletes in a training camp who lost about 4.5 lbs (2 kg) the two weeks before a 10K race. The dieters and the non-dieting control group both carb-loaded in the 24-hours pre-race. They both performed similarly, with no significant benefit gained by having lost weight pre-race. Ideally, athletes should fuel well to support optimal performance, instead of diet to be lighter.

Carbohydrates

Despite popular belief, hungry athletes who consume a sports diet rich in quality carbohydrate do not “get fat” nor become diabetic. The advice to limit carbs might be appropriate for unfit people, but fit athletes preferentially metabolize carbs and convert them into a winning source of muscle fuel.

Iron supplements

Iron supplements are better absorbed at 6:00 a.m. than 11:00 a.m. Therefore, taking iron first thing on an empty stomach appears best. That said, iron is known to contribute to stomach upset, and some athletes cannot tolerate iron if taken without food. For them, the best time to take iron is either prior to, or 30 minutes after exercise, before the post-exercise elevation in hepcidin (a hormone that hinders iron absorption) triggers a negative effect. If an athlete takes an iron supplement two hours after a hard exercise session, the elevated hepcidin concentration can reduce iron absorption by about 36%.

Sustainable sports diets

To perform well, athletes need access to good food and clean water, both of which depend on a healthy biosphere. We all need to honor the global dietary guidelines that integrate the UN Sustainable Development Goals. To living a sustainable lifestyle means: eat adequate, but not excessive, protein; consume at least one-third of protein from plants, minimize food waste (for example, after team buffets, take home leftovers for the next day’s lunch), eat locally-grown foods (to reduce transportation emissions), and choose foods with minimal and bio-degradable packaging. (No Styrofoam!) Ann athlete does who advocates for a sustainable environment not need to be vegan but does want to be mindful about dietary choices.

Vegetarians

Do vegetarians have a reduced risk of chronic disease because they eat less red meat—or eat more plants? Uncertain. Plants are rich in phytochemicals (reduce inflammation), dietary nitrates (improve blood flow), and many other performance-enhancing nutrients. A vegetarian diet imparts no obvious benefits (nor detriments) for athletic performance. Meat-eaters looking for a path towards vegetarianism can honor Meatless Mondays and enjoy a plant-based diet with smaller meat portions the rest of the week. Small steps can indeed have an environmental impact!

Alcohol

BORG (Blackout rage gallon) drinking, in case you are not familiar with this trend, is a mixture of water, alcohol, sweet flavorings, and electrolytes (which supposedly offer the hangover remedy) in a one-gallon plastic jug. The concoction is popular on some college campuses, easy to drink, and easy to overconsume. An ounce of alcohol takes about one hour to breakdown; too many ounces can hinder training and performance, as well as sleep. BORG drinking is only good if the other team is doing the indulging.

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for more info.

When it comes to eating eggs, nutrition advice has changed. In 1968, the American Heart Association (AHA) recommended Americans consume no more than three whole eggs per week. The belief was eating cholesterol-rich egg yolks would elevate cholesterol in the blood, increasing one’s risk of developing cardiovascular disease and having a heart attack or stroke. By 2015, that belief had changed. Today’s 2020-2025 US Dietary Guidelines no longer limit eggs. (Nutrition is an evolving science. New research led to new understandings about eggs. Though confusing, the “system is working” when new knowledge leads to new recommendations about what’s best to eat to protect good health.)

Studying the role of eggs in our diet has been done, in part, by surveying thousands of egg-eaters from a cross-section of the general population. This led to the conclusion that eating eggs can increase one’s risk for elevated blood cholesterol and heart disease. But that conclusion applied best to the average American (overfat, underfit) who ate fried eggs + bacon + buttery white toast, i.e., a lot of saturated fat. Today’s heart-healthy dietary guidelines focus on saturated fat as the culprit. Of the 5 grams of fat in an egg, only 1.5 g are saturated. (The recommended daily limit for saturated fat is about 15 grams per 2,000 calories.) Athletes who eat poached eggs + avocado + whole-grain toast can more likely enjoy that breakfast worry-free.

Overall, epidemiological evidence suggests enjoying 6 to 7 eggs/week does not increase heart disease risk. For most healthy athletes, cholesterol in eggs does not convert into artery-clogging cholesterol in the blood. That said, some people are hyper-responders to dietary cholesterol, meaning when they eat cholesterol-rich foods, their blood cholesterol level increases. If you have a family history of heart disease and/or diabetes, a worry-free choice is to enjoy more oatmeal breakfasts, made really yummy by stirring in a spoonful of peanut butter. (Both oatmeal and peanut butter are known to be heart-healthy choices.)

Heart health is enhanced by far more than eliminating eggs from your menu. Rather than targeting eggs as a contributor to heart disease, I suggest you take a good look at your overall lifestyle as well as dietary intake. As an athlete, you get regular exercise, but do you get enough sleep? Drink alcohol only in moderation, if at all? Eat an overall well-balanced diet? You might want to focus less on whether or not an omelet for breakfast will ruin your health (doubtful!) and instead make other long-term dietary enhancements. That is, could you add more spinach and arugula to your salads? Munch on more nuts instead of chips? Enjoy more salmon and fewer burgers? There’s no question that whole grains, nuts, beans, fish, and colorful fruits and veggies promote heart health.

Egg truths

• Eggs are nutrient dense. They contain all the nutrients needed to sustain life. The 150 calories in two eggs offer far more vitamins, minerals, protein, and other nutrients than you’d get from 150 calories of other breakfast foods (i.e., English muffin, energy bar, banana).

• Brown eggs are nutritionally similar to white eggs. The breed of hen determines the color of the eggs.

• Yolks contain nutrients that athletes can easily miss out on, including vitamin D, riboflavin, folate, and for vegans, B-12.

• One large egg has about 6 to 7 grams of high-quality protein that contains all the essential amino acids (such as BCAAs) that are needed to build muscles. Half of an egg’s protein is in the yolk (along with most of the vitamins, minerals, fat, and flavor). The white is primarily protein and water.

• Egg yolks contain the (once feared) cholesterol. One egg yolk has about 185 to 200 milligrams of dietary cholesterol. That’s more than half of the 300-milligram limit previously recommended by the American Heart Association (and has been dropped).

• Eggs are rich in a well-absorbed source of lutein and zeaxanthin, two types of antioxidants that reduce risk of cataracts and age-related macular degeneration.

• For dieters, eggs are pre-portioned, which can be helpful. Eggs are also satiating. Research suggests people who eat eggs for breakfast tend to eat fewer calories later in the day.

• What about omega-3 eggs? Are they all they are cracked up to be? Yes and no. Omega-3 fats are thought to be protective against heart disease. Egg yolks from hens fed flaxseed, algae, and fish oils have a higher omega-3 fat content, increasing it from about 50 mg omega-3s in an ordinary egg to 125 mg in an Eggland’s Best egg. This small amount is tiny compared to the 3,000 mg. omega-3s in a standard portion of Atlantic salmon ( 4-5-oz.).

Omega-3 eggs are more expensive than standard eggs: $6 vs $4/dozen. You’ll get a lot more omega-3s by consuming more salmon. That said, for non-fish eaters, any omega-3 fats are better than no omega-3s.

Stay tuned…

Someday, we will have a 100%-clear answer to which foods contribute to high levels of blood cholesterol and if that even impacts heart disease risk. That will put an end to the egg-cholesterol-heart health confusion. In addition, we’ll likely be able to benefit from genetic testing that offers personalized nutrition advice. Targeted research that looks at the genes of specific populations, will enable us to know, for example, which athletes can routinely enjoy three-egg omelets (with or without buttered toast) day after day without any fear of impairing their heart-health.

Until then, if your family is predisposed to heart disease, you certainly want to talk with your doctor and ask about not just eggs but also the possibility of getting tested for biomarkers for heart disease, such as Coronary Artery Calcium score, C-Reactive Protein, and a type of blood lipid called Lp(a). You could also get personalized guidance about a heart-healthy diet from a registered dietitian who specializes in cardiovascular disease. The referral list at eatright.org can help you find that expert!

Reprinted with permission from Nancy Clark.

Nancy Clark MS RD CSSD counsels both fitness exercisers and competitive athletes in the Boston-area (Newton; 617-795-1875). Her best-selling Sports Nutrition Guidebook is a popular resource, as is her online workshop. Visit NancyClarkRD.com for info.

Lugging around excess body fat can certainly hinder athletic performance. Just notice how much harder you work when carrying a heavy bag of groceries up a flight of stairs! That said, if you are an already-lean athlete and contemplating weight loss to supposedly improve your athletic performance, should you think again?