Tuesday
Aug022016

It's Time to Say Bye Bye to BMI

Research shows the Body Mass Index doesn’t yield correct answers when it comes to athletes' health

August 1, 2016
weight scale trash bmi

Since the mid-nineties, health care professionals have used Body Mass Index (BMI)—a measure of how much mass someone has relative to their height—to identify whether a patient is at a healthy weight. A BMI between 18.5 and 24.99 is considered normal; 25 to 29.9 is overweight; and 30 and above is obese. The BMI is so revered as a standard that the US Equal Employment Opportunity Commission has proposed people with higher BMIs should also have to shell out more for insurance premiums, since being overweight or obese can increase your risk for diabetes and heart disease, and is considered unhealthy.

That’s a move researchers from UCLA have condemned as not just unfair, but downright incorrect, in a paper published earlier this year in the International Journal of Obesity

In the study, the researchers pulled data from 40,420 people in the most recent National Health and Nutrition Examination Survey and analyzed the link between BMI and key health markers including blood pressure, glucose, insulin resistance, and cholesterol and triglyceride levels. The BMI/health connection didn’t pan out—by a long shot. Researchers found that nearly half of overweight men and women and 29 percent of obese people were otherwise totally healthy. On the flip side, more than 30 percent of those with normal BMIs were actually unhealthy according to those markers. 

“There are tens of millions of people who are overweight and obese and are perfectly healthy," says study author A. Janet Tomiyama, PhD, assistant professor of psychology at UCLA. “Right now, we have this laser focus on weight and a flawed measure like BMI, when we should be talking about health.”

That’s really important for active people like cyclists, for whom the BMI problem is two-fold. Not only are some of us likely caught in that high BMI bracket though otherwise healthy, but also BMI—which is calculated by dividing a person's weight in kilograms by the square of the person's height in meters—was really never meant to be applied to an active and certainly not athletic population. (Here's how you can reach your ideal cycling weight, BMI be damned.)

We active folk tend to have a higher proportion of muscle tissue, which by nature is denser than fat tissue. That means we sometimes see big numbers on the scale even if we have relatively low body fat. BMI also says nothing about how your fat is distributed. Two people may have identical BMI measurements (“healthy” or otherwise), but where one might store most of their fat as deep abdominal, visceral fat—which is known to be a high health risk—the other might store it as relatively innocuous subcutaneous fat (the kind you pinch under your skin).

If you’re concerned about your BMI or your health-care provider raises a red flag over yours, Tomiyama, who directs UCLA's Dieting, Stress, and Health Lab, suggests gathering more data for a fuller picture of your weight, health, and fitness. A body composition test performed with a DEXA scan, skinfold caliper test, or bio-impedance scan (like a Tanita scale) can give you a better idea of your actual body composition, so you know how much of you is lean, muscle tissue relative to fat. Also, see your doc and round up your general health metrics:

“In our study we used a very stringent and comprehensive definition of health that included blood pressure, triglycerides, 'good' and 'bad' cholesterol, blood sugar, and inflammation,” says Tomiyama, noting that these are common tests that any healthcare provider can do and are far better indications of how healthy you are than BMI alone.

Saturday
Jul302016

Working Out in the Heat can be Hazardous!

6 Things Medical Professionals Wish You Knew About Working Out in the Heat

Take note of these six health tips the next time you exercise outdoors on a boiling-hot day

July 28, 2016

Summer is the perfect season for exercise buffs: The days are longer, the weather is consistently better, and cooling down requires porch-sitting with recovery beer.

But as temperatures rise into the triple digits, Exertional Heat Illness (EHI)—an umbrella term for heatstroke, heat exhaustion, heat syncope, and heat cramps—can interfere with your training and your health if you don’t take the right precautions.     

We spoke with heat-related illness specialists Dr. Douglas Casa, a professor of kinesiology at the University of Connecticut; and Dr. Michael F. Bergeron, the heat, hydration, and research advisor to Major League Soccer, for some safety tips on staying active in the heat.

taking a break
Do Your Research

Knowing the symptoms of EHI and paying attention to your body are extremely important if you want to exercise safely in the heat. It’s easy to brush off a headache during a pickup basketball game, or attribute weakness and fatigue during a run to something like not getting enough sleep the night before, but your situation may be more serious than that. 

Headache, dizziness, nausea, fatigue, and lightheadedness are all telltale signs of heat exhaustion according to Casa, whos is also the CEO of the Korey Stringer Institute, an exertional heat stroke prevention institute. Becoming disoriented or blacking out are both signs of heatstroke, which is a much more serious—even fatal—condition that requires immediate medical attention.

     

If you find yourself possibly suffering from heat exhaustion, Bergeron advises stopping what you’re doing and moving to a shaded or air-conditioned area immediately. Remove any excess clothing, lay flat on your back with your legs elevated, re-hydrate, and wait at least a day before working out again.

cycling
Work Out With a Buddy

Having a motivator, a competitor, or just someone to talk to always makes a workout more fun. But working out with others is good for safety reasons as well, especially when exercising in the heat. 

Bergeron, who doubles as president and CEO of Youth Sports of the Americas—a group that promotes health and safe exercise for children—suggests always making sure someone is there in case anything goes wrong. Your workout buddy can also be the voice of reason those times when you want to keep going, but doing so maybe wouldn’t be the best idea. 

water
Drink Tons of Water

Staying hydrated is key to staying healthy, especially when you’re working out on a scorching day. Drinking water improves your ability to sweat, a process that cools you down; and it replenishes liquids lost to sweat.

The three key factors that determine how much fluid you need, says Casa, are the intensity of your workout, environmental conditions, and your weight. For example, if an offensive lineman loses 3 liters of water in the same time a cyclist might only lose 2 liters, that doesn’t mean the football player is more dehydrated.

Bergeron generally recommends drinking about 16 to 20 ounces of fluid per pound of body weight lost during exercise. It’s important to spread this out throughout the day and not consume it all at once if your body’s water deficit is large. It’s just as important not to wait to drink until you’re thirsty, as that’s a sign you’re already slightly dehydrated.

sunset run
Work Out at the Right Time

Working out early in the morning or late in the evening is best during the summer since it won’t be as hot out, and daylight is more widely available. This time frame can fit perfectly with most people’s work schedules: If you don’t feel like going for a bike ride at 6 a.m. before work (we understand completely), you can do it in the evening when you come home. (And for those on the night shift, you can finally work out outdoors when you wake up!)

But sometimes, afternoon workouts are inevitable. If your field hockey games are every week at 2 p.m., Casa says you need to be training in that type of heat all the time so you’re used to it. With that said, work your way up to it—don’t just start doing intense workouts in the sweltering heat from the start. It’s okay to take breaks and go slow. 

workout clothing
Wear the Right Clothing

It’s important to fill your workout wardrobe with clothes that keep you cool and dry on days where it may feel like you’ve taken up permanent residence on the sun. Bergeron advises wearing items that are lightweight, breathable, and that protect your skin from UV radiation. Dry-fit clothing, which helps wick moisture and prevents the buildup of excess body heat, is also a great option. 

fruits and vegetables
Eat the Right Food

Fueling your body with foods that won’t dehydrate you is crucial when doing any type of activity on a hot day. Bergeron recommends avoiding foods that are high in fat and protein before exercising since they require time and energy to digest. As you exercise and your body heats up, blood flow to the GI tract decreases, which makes digestion more difficult and may cause nausea.

Instead, aim for hydrating foods that have high water content. Apples, melons, cucumbers, berries, grapefruit, avocado, and lettuce, among others, will all cool your body and keep you hydrated. But don’t worry: You can always have that big bowl of pasta you can’t stop thinking about during recovery. 

Thursday
Jul072016

6 Reasons Biking Boosts Weight Loss

You'll want to hop on your bike and hit the roads instantly after learning these six reasons cycling is so effective at helping you lose weight.

It Won't Wear Your Joints Out
Bicycling is a nonimpact exercise, which means there’s no jarring on your joints, so even the heaviest rider can climb aboard a bike and pedal. With today’s fully geared bicycles, anyone from the most out-of-shape beginner to the recreational racer can pedal for miles (and burn loads of calories) hour after hour.
It Strengthens Your Body's Biggest Muscles

Cycling uses all the biggest muscles in your body—your quads, hamstrings, hip muscles, and glutes. As you ride you also build lean muscle tissue in your lower body, especially in your legs and glutes. That's all essential for increasing your fat-burning ability.
It Trains Your Muscles to Burn More Fat

Cycling, especially long, steady rides, builds hundreds of thousands of capillaries in your legs, which means you can deliver more oxygen-rich blood to your working muscles. Your mitochondria—the fat-burning furnaces in your muscle cells—also get bigger, so they can use the increased influx of oxygen to burn more fat and produce more energy.
It Produces More Ways to Burn Fat

The endurance training you do on a bicycle elevates your levels of fatty-acid-binding proteins and fat-carrying enzymes so your body is more efficient at shuttling fatty acids from storage into your working muscles. Simply put, the fitter you get, the more oxygen you can use, and the more fat you can burn.
It Increases Your Daily Calorie Burn

Cycling also increases your daily calorie burn. It burns calories—hundreds of them—while you’re out there turning the pedals. Even at a recreational pace of 13 to 15 miles per hour, you burn 500 to 600 calories in one hour. That's about 4,000 per week—enough to burn off more than a pound—if you ride just an hour every day. An hour of walking, on the other hand, burns just 150 to 250 calories while jogging only burns between 350 and 450 calories.
It Continues Burning Calories Long After You're Done

Finally, cycling coaxes your body to continue burning calories at a higher rate after you’ve racked your bike, because your body is still working to repair and replenish your muscles. Bicycling also builds lean muscle tissue and raises your basal metabolicrate (BMR), the calories you burn while you’re just hanging around, not exercising. Studies show that just 30 to 45 minutes of exercise most days a week can boost your BMR and keep it raised all day.
Wednesday
Jun292016

15 Ways to Cut Hundreds of (Empty) Calories a Day


When you're looking to get fit and lean, you've got to make every calorie count

By selene yaeger June 27, 2016

There's more to eating well than just cutting calories

You’ve likely heard and read dozens (maybe hundreds) of times that to lose weight, you need to eat fewer calories than you burn and/or burn more calories than you eat—3,500 of them for each pound to be exact. Those numbers are based on the thermodynamics of food when it’s burned with a Bunsen burner in a lab. You are not a Bunsen burner. The food you eat is not incinerated in some coal stove inside your body. What you eat goes through a digestive process that triggers a cascade of metabolic responses that dictate appetite, weight, fat storage, metabolic response and more. 

That means the way the human body reacts to 500 calories from Little Debbie Swiss Rolls is dramatically different from how it reacts to 500 calories in the form of roasted chicken with a side of kale. In fact, in one Purdue study where researchers had men and women add 500 calories of peanuts a day to their diet for 8 weeks, they not only didn’t gain weight, but also their triglyceride levels dropped by as much as 24 percent. 

How’d that happen? Scientists continue to work on that. But a prevailing theory is that foods rich in healthy fats and protein are more satisfying so you eat less junk that isn’t; protein-rich foods increase your digestive metabolism, so you burn more calories, and foods like nuts are high in fiber, so a fair amount of their caloric energy passes through you unabsorbed. 

“One easy way to understand this is to ask yourself what would make you feel more full, 300 calories of apple juice (about 2 ½ cups) or 300 calories of apples (about 4 apples),” says the lead author of that peanut study, Richard D. Mattes, MPH, PhD, RD, director of the Ingestive Behavior Research Center at Purdue University. Metabolically speaking, getting calories from whole fruits like apples and berries protects you from weight gain and diseases like diabetes, while juice raises your risk for both.

This is all really important to understand when you’re looking at weight loss as well as overall health and certainly for cycling performance. If you want to count calories for health and weight loss, you need to make your calories count. Here’s 15 ways to slash the empty ones and get more of the ones you need most. 

Eat Your Juice

One cup of orange juice contains 110 calories, 23 grams of sugar, and zero fiber. One orange comes in at just 62 calories, 12 grams of sugar, and 3 grams of fiber, the latter of which slows the sugar flow into your bloodstream and means you absorb fewer calories. Eating fruit instead of juice also slashes your risk for diabetes by up to 26 percent while drinking juice raises it 8 percent, according to a study of 187,382 people published in the British Medical Journal. Making the switch can save you hundreds of sugary calories a week. 

Have Nuttier Snacks

Instead of eating that snack bag of chips, pour yourself a palmful of nuts. At 160 to 200 calories (the amount in those chips or pretzels) an ounce, nuts are calorie dense. But unlike those processed snack foods, they help you lose weight. One study published in the Journal of Nutrition found an inverse association between regular nut consumption and body mass index, while another published in the same journal found that people who ate nuts two or more times a week had less risk for weight gain and obesity over an 8 year period than their peers who rarely ate them. They’re also rich in muscle-building protein and inflammation-reducing healthy fatty acids as well as essential vitamins and minerals cyclists need. 

Choose to Chew

You already know that the closer food is to its natural form, the better it is for your health. Well, whole foods are also better for your waistline. In a study of 450 students published in the American Journal of Clinical Nutrition, Japanese researchers found that those who regularly ate foods that required work to chew and eat had significantly leaner waistlines than those who generally consumed processed, easy to chew foods. Those findings were echoed in an animal study where mice eating softened feed actually became obese over the course of 5 ½ months, while those eating their usual hard feed saw no weight gains. Simple swaps like a steak over a burger, whole fruits and veggies rather than smoothies and trail mix over chips can add up to hundreds of calories burned and saved over time.

Show up Late to Happy Hour

Long-term studies have found that those who drink moderately—about a drink a day—gain less weight overtime than those who abstain. But it’s easy to swing too far in the other direction and pack on pounds with too much booze consumption. Alcohol not only has more calories (7) per gram compared to carbs and protein, which have 4 calories per gram, but also the body burns it first. So if you flood your system with a fishbowl margarita, you won’t be burning anything else for hours. With your inhibitions blunted with booze, you’ll also likely toss down a few hundred more in the form of bar food. Stick to one or two weight-healthy drinks a day by being the last to show up at the bar and the first to leave.

Stream Your Own Soda

Half the people in the US get at least 200 calories a day from sugary soft drinks. Not surprising when you consider that a 20-ounce soda contains 240 calories in the form of 15 teaspoons of sugar. It’s flat-out awful for you and packs on pounds and raises your risk for diabetes the more you drink. In a review of 30 studies, researchers found a link between soda consumption and weight gain and obesity in both children and adults. If you like bubbly flavored beverages, buy a Sodastream water carbonator, bubble up some plain water, squeeze in a lemon and lime and save yourself hundreds of calories a day. And don’t fall for the diet soda trap—it’s no better than the sugary stuff for your metabolic health and has been linked to weight gain.

Eat in

Cooking your own meals can easily save you several-hundred calories per meal and increase the nutritional quality of your diet exponentially. Restaurants not only serve larger portions than what you’d typically eat at home, but also fill their meals with hidden fats and sugars that ramp up the calorie content. A study published in the Journal of the American Medical Association found that the average chain restaurant meal delivered a whopping 1,128 calories—nearly half a day’s worth. Even lunches tipped the caloric scales at over 1,000. You can make an abundance of healthy, delicious lunches for 600 calories or less at home.

Slow Your Roll

Inhaling your food like an alpha wolf defending his kill from the pack isn’t just impolite (especially if you are indeed eating with others), but can also cause you to eat hundreds of extra calories throughout the day. A study published in the Journal of the American Dietetic Association found that quick eaters not only consumed more than 10 percent more calories, but also felt less satisfied when the meal was done—and hence more likely to keep snacking afterward. The slow eaters also drank about a half-cup more water during the meal, which helps increase metabolism and keep calorie intake in check. Take smaller bites, chew each bite twice as long as you usually do, and put down your utensils between bites.

Aim For 8 Hours of Sleep a Night

Regularly shortchanging your sleep packs on pounds as your stress hormones like cortisol rise and your body goes into fat-storage mode—and that’s just half of the double-whammy too little sleep delivers to your waistline. You’re also likely to eat more—like 300 calories a day more. When a team of researchers took a group of men and women who regularly slept a healthy 7 to 9 hours a night and had them cut their shut eye time in half for five days, the sleep deprived volunteers responded by increasing their calorie consumption from 2518 calories a day to 2814 calories, much of it in the form of fat. Keep your calories and cortisol in check by getting at least 7 hours of quality sleep a night.

 

Exercise before Breakfast

Delay breakfast until after your ride or workout. You’ll fire up your fat burning and ultimately become a better fat burner not just while you exercise, but all day long. In a study published in EBioMedicine, Japanese researchers found that when you exercise before breakfast you can burn between 260 and 280 more calories throughout the day than when you exercise at other times. 

​Make It Mushroom Monday, Any Day

Meaty mushrooms like shitakes, portobellos, and white buttons make good substitutes for beef in pasta dishes, soups and even sandwiches and burgers. They also save a ton of calories without leaving you hungry. In a study published in Appetite, Johns Hopkins researchers found that men and women who chose mushroom-based lunches over beef-based afternoon meals ate 444 fewer calories while still feeling just as satisfied. 

​Eat Mindfully and Purposefully

Mindful eating sounds new agey, but it’s more important than ever in our modern-day distracted lives, where we are eating over our cell phones while inadvertently bingeing on a block of cheese while binge-watching the latest dish from Netflix. Asking yourself questions like why you’re eating (are you just bored?), what you’re eating (is it the best choice to fuel your active body?) and how much you should eat (do you need three slices of Sicilian or will 2 or even 1 do?) and then tuning into the taste of your meal. It can help you slash hundreds of calories a day. In one study, people with binge-eating disorders were actually able to reduce their weekly binge episodes from more than 4 per week to 1 ½ through mindful eating practices. Even if you don’t chronically binge eat, chances are you mindlessly toss back more than you intend to at least now and then.

Quench Your Thirst before You Eat

Pour yourself a pint (of water) and drink it before your next meal, and you may eat about 90 fewer calories by the time you push away from the table, according to a study by researchers at Virginia Tech. Practice it three times a day and you may not only spare yourself close to 300 calories, but also will automatically get the fluid you need to stay well hydrated. Find plain water kind of blah? Spice it up with these tricks

Eat Ancient Grains

When most Americans think grain, they think wheat, rice and corn. But there are some rising stars like amaranth, kamut, freekeh, farro, teff, millet, and, of course, quinoa that are blasting out of the past and nudging their way onto mainstream supermarket shelves. These so called ancient grains are well worth a try because they tend to be higher in fiber and protein—both of which fill you up faster and stoke your metabolism higher—than the typical wheat and rice staples in our diet. Research shows that eating the recommended amount of daily fiber—38 grams a day for men, 25 grams a day for women—significantly reduces the risk of gaining weight over time. 

Cook Rice Like This

Resistant starch is a type of starch your body doesn’t absorb from foods like rice, beans, pasta, bananas (and their peels), and other starchy foods. You can actually manipulate the amount of this calorie-saver in your rice dishes with a simple cooking trick: Just add a teaspoon of coconut oil to the boiling water. Then add a half a cup of rice. Simmer for 40 minutes or boil for 25. Then—and this is key—refrigerate it overnight (or 12 hours). You reduce the calories in a given serving by up to 60 percent, which means you get just 100 calories versus 200 calories per cup for white rice. 

Eat More (Yes, More) Eggs

Now that the USDA recommended dietary restrictions on these nutrition-packed portable orbs is over, you can—and should—eat them more often, especially if you’re looking to lose weight. In a study published in the International Journal of Obesity, researchers from Louisiana State University found that men and women who ate two eggs for breakfast lost 65 percent more weight after two months than their peers who ate a bagel breakfast that contained the same number of calories. That’s likely because as other research points out, eggs improve satiety, so you’re likely to eat fewer calories the rest of the day. They’re also a lower-calorie option than many breakfast foods. Two large eggs contain just 150 calories, while one large blueberry muffin comes in at 385—twice as much.


   

 

Friday
Apr222016

The Truth About 'Fat-Burning' Health Foods

 

Some people say that certain foods can melt your spare tire. But the legitimacy of those claims is largely inflated.

BY CHRIS MOHR

 

 

PHOTOGRAPH BY SHUTTERSTOCK

The idea is a compelling one: If you eat the right foods, your metabolism switches into overdrive and your body magically starts depleting its fat stores.

So, the theory goes, if you’d just eat more egg whites, or garlic, or grapefruit, you’d lose the weight you’d want. 

Unfortunately, your body just doesn’t work this way.

Yes, carbohydrates, dietary fat, and protein can increase your metabolism (your body’s ability to convert food to energy) slightly, but it’s still a relatively small increase in the long run.

The fact is that when you eat any food, your metabolism increases to digest and use the food’s calories for various functions. This is called the “thermic effect” of food—and the effect is always temporary. No one food can elevate your metabolism for extended periods.

Green tea, hot peppers, celery—they’ve all been touted as “fat-burning” foods, but research has repeatedly shown that none of them cause any measurable increase in metabolism.

Interestingly, though, some recent data suggests that while certain foods may not “burn” fat, you may not absorb as many calories from them as once thought.

For example, David Baer, MD, out of the US Department of Agriculture, studied the measured energy value of pistachios in the human diet.

Baer’s team found that the amount of calories study participants absorbed from pistachios was actually 5-percent less than the number of calories on the nutrition facts panel for the pistachios.

No, that’s not a substantial amount you should obsess over, but know this: Your body doesn’t absorb every calorie from the food you eat (some just pass through you undigested), particularly if that food contains fiber and/or protein.

Does this mean that eating pistachios will burn fat?  Of course not.  

But it lends evidence to the concept that the amount of calories you think you’re eating may not actually be what you’re eating.     

Other foods have followed suit with the pistachio study: Apples, carrots, sweet potatoes, and beef are some examples. Scientists are still sorting out exactly what role protein and fiber play in non-absorbable calories.

What does this all mean for you?

1. Don’t believe the hype about certain foods possessing “fat-melting” properties.

2. This is just another reason to add more fiber- and protein-rich foods to your diet.

Try to include meat or seafood, vegetables and fruit, as well as complex carbohydrates at each meal. Though this won’t turn you into a metabolic machine, it will fuel your body and help you consume fewer calories from those foods you eat.

And it’s no coincidence that those exact same foods help to fuel muscle growth, fight disease, and keep you fuller for longer so you eat fewer calories over the course of a day. Bonus!

This article originally appeared on Men's Health.