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NIFS Healthy Living Blog

Build a Bigger Engine with Aerobic Training (Part 2 of 2)

GettyImages-1217027916-1Last time, I covered a few of the benefits of building your aerobic base:

  • Ability to recover more quickly between bouts of high-intensity exercise
  • Ability to sustain higher-threshold movements for longer (think being able to hit more heavy singles on bench or deadlift with the same rest)
  • Ability to handle more acute rises in training volume
  • More efficiency, as you’re able to remain in an aerobic state for energy for longer periods (before resorting to another system like anaerobic/glycolytic)

Cool, Lauren! Now, how the heck do I train my aerobic system? How do I start to build that base? Here are a few examples of ways to incorporate aerobic training into your fitness plan.

Contralateral Circuits

As the name implies, a contralateral circuit involves working opposite sides of the body while performing a two-part, compound movement—for example, a step-up with the right leg followed by an overhead press with the left arm. Each movement is performed for time, typically 20–30 seconds, followed by a short period of rest while you switch to the opposite side to perform the movement.

By cycling between exercises that work opposite limbs and opposite sides of the body (think diagonally across), we are taxing the cardiovascular system in a relatively novel way. Specifically, as blood is pumped and pools in working limbs for 20–30 seconds (right leg/left arm), the heart has to work slightly harder to then switch to pumping blood to ensure that the next group of contralateral limbs is adequately supplied (left leg/right arm). Heavy weights aren’t involved; typically it’s a combination of bodyweight exercises, bands, or light weights. But after 20–30 minutes of near continuous movement, chances are you’ll see that some sweat has appeared!

Here’s a quick example of exercises that can be linked together for a contralateral circuit:

  • Reverse Lunge Right + Band Row Left x 0:25/0:30 rest and transition
  • Reverse Lunge Left + Band Row Right x 0:25/0:30 rest and transition
  • Step-Up Right + DB Overhead Press Left x 0:25/0:30 rest and transition
  • Step-Up Left + DB Overhead Press Right x 0:25/0:30 rest and transition
  • Single-leg RDL Left + DB Row Left (Right stance leg) x 0:25/0:30 rest and transition
  • Single-leg RDL Right + DB Row Right (Left stance leg) x 0:25/0:30 rest and start over

Escalating Density Training (EDT)

This type of training not only trains your aerobic system, but also allows you to gradually build up volume on particular lifts. So if you in any way resemble me and aren’t the number-one fan of running, this might be for you! Escalating Density Training involves working for 5-minute blocks continuously. You alternate between two lifts, usually opposite in nature (upper vs. lower body), and complete only 1–2 reps of each before returning to the other movement.

For example, you can pair a Kettlebell Goblet Squat with a DB Bench Press. So, for 5 minutes you complete one rep of a Goblet Squat, followed by one rep of DB Bench Press. You can keep a tally of how many rounds you complete in 5 minutes and compare for future sessions to see whether you’re able to do more work in the same period of time. Typically, you can complete three blocks of EDT in one training session, separated by 3–4 minutes of rest. All in all, you’re completing 15 minutes of high-quality work.

Here’s an example of an EDT session:

  • Block 1: KB RDL/DB Overhead Press x 5:00 --> 3:00 rest post round
  • Block 2: Sandbag Clean & Squat/TRX Row x 5:00 --> 3:00 rest post round
  • Block 3: DB Incline Press/Goblet Reverse Lunge x 5:00 --> cooldown

A Long Walk or Hike, Focusing on Nasal Breathing

This one is pretty simple, but surprisingly effective. Getting used to nasal breathing, as opposed to mouth breathing, has more than a few benefits. One of them is that it allows our body to become better adapted to handling CO2 as we produce it during exercise and movement in general. Why does this matter? This has been shown to lower resting heart rate, improve pH regulation, and improve our body’s ability to cycle and filter out metabolites.

So, the next time you head out for a hike at a state park or a stroll through your neighborhood, see if you can maintain a moderate pace while only nasal breathing. If you feel the need to breathe out of your mouth, that’s fine! Each time you go out, simply see how much you can do with nasal breathing, trying to push that time or distance bit by bit each session. Bonus? You get to enjoy the great outdoors.

Low-intensity Modalities + Breath Holds

I came across this method after listening to Cal Dietz, Strength & Conditioning Coach at the University of Minnesota, at multiple conferences and clinics. He’s worked with numerous Big Ten Champions, NCAA National Champions, and Olympians throughout his career. When working with athletes as they return from a hiatus in training (i.e. post summer semester), he has employed a 2-week period focusing primarily on aerobic training.

One method he’s used is 10-second exhalation and breath holds while performing light aerobic exercise. For example, while on a Concept2 Rower, he’ll have his athletes find an easy, maintainable pace for 1–2 minutes. For the next 10–15 minutes while maintaining that pace, athletes will exhale at the beginning of every minute and hold their breath following that exhale. They will attempt to hold their breath until the 10-second mark of that minute. So, if it takes 4 seconds to exhale, they’ll then try to hold their breath for 6 more seconds. Once you start breathing again, the goal is to stabilize the breath as quickly as possible.

After trying this myself, it was surprisingly difficult. There was a sense of being uncomfortable, obviously the urge to breathe, some slight tinging, followed by immense relief after the 10-second mark. I’m listing this last because it’s something I would work up to. Can you try it right off the bat? Absolutely. But don’t feel that you need to continue the breath hold for the full 10 seconds. Maybe its only for 5–6 seconds while you acclimate to the training.

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All in all, there are various ways to train the aerobic system, and there isn’t one that fits all. But if you’re looking to sprinkle some variety into your routine, one of these modalities might be for you. As always, the goal with these workouts isn’t to leave you running for the trash can. If it does, take it down a notch.

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This blog was written by Lauren Zakrajsek, NIFS Health Fitness Instructor, Personal Trainer, and Internship Coordinator. To learn more about the NIFS bloggers, click here.

Topics: walking workouts training weight lifting high intensity aerobic breathing

Choosing and Using Probiotics for Gut Health

Screen Shot 2020-07-21 at 12.20.41 PM“Take a probiotic; it helps with your gut.” We have all heard it from friends, doctors, and Registered Dietitians. Is it really that simple, though? It is no secret that probiotics really do help with a variety of gastrointestinal (GI) issues. However, did you know that there are specific strains of probiotics that help with specific symptoms, and while one strain may help with one GI symptom, it may not help with another? Not all probiotics are created equal, and not all supplements labeled “probiotic” will yield health benefits.

What Are Probiotics and Prebiotics?

Probiotics are live microorganisms (tiny living things), mainly bacteria and sometimes yeast, and are intended to have health benefits when ingested. They are similar to the helpful microorganisms naturally found in the gut. Probiotics are found in supplements and fermented foods, such as Greek yogurt with added Lactobacillus and Bifidobacterium, kombucha, tempeh, kefir, and sauerkraut.

Do not confuse these with prebiotics, which are the food source for the “good” bacteria in our GI tract. Prebiotics are “a selectively fermented ingredient that allows specific changes, both in the composition and/or activity in the gastrointestinal microflora that confers benefits upon the host’s well-being and health.” They are carbohydrate compounds, primarily oligosaccharides, that withstand digestion in the GI tract and reach the colon where they then are fermented by the gut microflora, helping the good bacteria to grow. In short, they fall under the categories of soluble fiber and fermentable fiber. This is important, because even if you are taking a probiotic or eating foods rich in probiotics, you may not be receiving the maximum amount of benefits if you are not eating enough prebiotics (soluble and fermentable fiber). Foods rich in prebiotics include green bananas, onion, garlic, asparagus, artichokes, and leeks.

How Do Probiotics Work?

The human GI tract is colonized by many microorganisms, such as bacteria, viruses, fungi, archaea, and protozoa. The totality of these organisms is known as the gut microbiota, microbiome, or intestinal microflora and can affect the health and disease state of a human. Probiotics typically work in the GI tract to alter the intestinal microflora, adding good bacteria to the microbiome. The mechanism of action depends heavily on the species and strains because different species and strains have different effects. Some of the known mechanisms include the following:

  • Inhibit the growth of some pathogens (microorganisms causing disease or sickness).
  • Help with vitamin synthesis (B vitamins and vitamin K).
  • Increase absorption of protein.
  • Reinforce the gut barrier, keeping food and other GI contents from leaking into the bloodstream.
  • Neutralize toxins.
  • Lower the pH in the colon, which could help speed up stool for those who are constipated.
  • Replenish good bacteria after taking antibiotics, which may help resolve diarrhea from antibiotics.

Probiotics and Gut Health

The gut microbiota is the center of much current research. Researchers are suggesting that an imbalance in the gut microbiota could lead to several health issues including immune dysfunction, infection, obesity, and GI problems. The imbalance can come from medical conditions, stress, and antibiotic usage (which destroys bad and good bacteria).

Using a probiotic to restore balance has been shown to alleviate symptom persistence in irritable bowel syndrome (IBS) by 21% using both single-strain and multiple-strain supplements, with the mixtures being most effective. Studies also found symptom relief in ulcerative colitis, reduction in acute diarrhea duration and frequency, and lower risk of diarrhea from antibiotic use by 51% or clostridium difficile infection.

A healthy gut with plenty of good bacteria has also been shown to improve the immune system, combat inflammation, and potentially reduce bad cholesterol (total and LDL cholesterol).

Picking Probiotic Supplements

Remember, not all probiotic strains and species are created equal. Trying to figure out exactly what strain, species, and genus of probiotic will work for you and your needs can be tedious, because there are thousands upon thousands of variations. It may take some trial and error to finally find a probiotic that meets your needs.

The good news is that both Lactobacillus and Bifidobacterium are the most studied probiotic genera. There are several studies of strains from these two genera that have produced positive results. Below is a list of conditions with the genus and strain of probiotic that has shown promise in helping with the condition.

  • Acute diarrhea: Lactobacillus paracasei or Lactobacillus rhamnosus or Saccharomyces boulardii
  • Antibiotic-associated diarrhea: Lactobacillus casei, Lactobacillus bulgaricus, Lactobacillus acidophilus, Lactobacillus rhamnosus
  • Overall symptoms of IBS: Bifidobacterium bifidum, Escherichia coli
  • Abdominal pain: Bacillus coagulans, Bifidobacterium bifidum, Lactobacillus plantarum
  • Bloating/distention: Bifidobacterium animalis, Bifidobacterium bifidum, Lactobacillus reuteri
  • Constipation: Bacillus coagulans, Bifidobacterium animalis, Oligofructose (prebiotics)
  • Lactose maldigestion: yogurt with Lactobacillus delbruecki susp bulgaricus and Strepococcus thermophilus
  • High Cholesterol and LDL: Lactobacillus acidophilus, a mixture of Lactobacillus acidophilus and Bifidobacterium lactis, Lactobacillus plantarum (more research is needed here)

If you are struggling with GI symptoms and considering a probiotic supplement, it is important to talk this over with your Registered Dietitian (RD) and primary care provider. They can help to identify the correct genus, strain, species, and dose you need.

Feed Your Gut

For those healthy individuals, you most likely do not need a probiotic supplement. If you really want to help your gut, follow these tips:

  • Eat foods rich in probiotics. When seeking foods with probiotics, the product must have active and live bacterial culture and indicate that on the label. A good rule of thumb is at least 1 billion colony-forming units or 1 billion CFUs, containing the genus Lactobacillus, Bifidobacterium, or Saccharomyces boulardii. Probiotic-rich examples include Greek yogurt, kombucha, tempeh, kefir, and sauerkraut. Be sure to check the label for the specific genus of probiotics(s) in the products, as they will differ. Also note that the starter cultures in Greek yogurt are Streptococcus thermophilus and Lactobacillus bulgaricus, but these are often destroyed by our stomach acid and offer no benefits. Get the Greek yogurt brands that add extra bacteria to the starter cultures (check the label).
  • Feed your probiotics with prebiotics to help the probiotics multiply in your microbiome.
  • Sleep at least 7–8 hours each night.
  • Maintain a healthy weight and body fat percentage.
  • Manage stress.
  • Balance your diet, keeping it loaded with fruits, veggies, lean proteins, fiber, and whole grains.

As always, reach out to the NIFS Registered Dietitian for nutrition help, including nutrition management of gut-related issues. We are here for you.

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This blog was written by Sabrina Goshen, NIFS Registered Dietitian. To learn more about the NIFS bloggers, click here.

Topics: nutrition digestion gut health supplements dietitian probiotics dietary supplements

Taking Dietary Supplements Safely: Advice from a NIFS Dietitian

GettyImages-505820296Dietary supplement usage is reaching an all-time high. The 2019 Consumer Survey on Dietary Supplements revealed that 77% of Americans consume supplements. This is a dramatic increase from the 53% reported by the NHANES in 2010. Americans are spending $38.8 billion a year on supplements, with more than 85,000 supplements on the market. Reasons for consumption are widespread, ranging from athletes hoping to boost performance to people who need more Vitamin D for bone health.

With the rise in supplement usage, it is important to be an informed consumer. While there are numerous reasons for this, one of the biggest is that supplements are loosely regulated by the FDA, meaning labels may not display what is truly in the supplement. Also, claims marketed about the benefits of a supplement may be false because companies are not required to obtain authorization from the FDA prior to making such nutritional support claims.

How can you know whether what you’re taking is safe and effective? Let’s dive in!

What Is a "Dietary Supplement?"

According to the Dietary Supplement Health and Education Act of 1994 (DSHEA), a dietary supplement means “a product (other than tobacco) intended to supplement the diet that bears or contains one or more of the following ingredients:

  • Vitamin
  • Mineral
  • Herb or other botanical
  • Amino acid
  • A dietary supplement used by man to supplement the diet by increasing dietary intake
  • A concentrate, metabolite, constituent, extract, or combination of any ingredient described in the above.”

Are Dietary Supplements Regulated? Can Supplements Be Trusted?

Technically, yes, supplements are regulated by the FDA under the DSHEA. However, there are loopholes to consider:

  1. The FDA does not inspect products before they are sold, nor do they require registration unless the supplement contains a new ingredient not yet on the market.
  2. The only formulation standard is the Current Good Manufacturing Practice (GMP); however, 2013 report by the FDA revealed that 70% of inspected manufacturers were in violation of GMPs. Not all products even get inspected after being on the market. The FDA states the manufacturer is responsible for ensuring safety and quality, but clearly some manufacturers are doing a poor job, and the FDA is only catching some.
  3. Nutrition supplements may not claim to diagnose, cure, prevent, or treat diseases. Sure enough, some manufacturers have managed to ignore this. A 2003 study found that 81% of 338 herbal supplement retail websites made one or more health claims, and 55% claimed to diagnose, cure, prevent, or treat specific diseases.

What Can You Do to Be Safe When Taking Supplements?

Blind trust in supplements is unwarranted; however, there are steps you can take to ensure your safety while taking them.

  • Check the label for a stamp indicating third-party verification. Independent third parties are hired by manufacturers to thoroughly test products, ensuring accuracy of ingredients, potency, and amounts; absence of toxic compounds; and production in compliance with FDA GMPs. Credible third parties include NSF International and US Pharmacopeia (USP).
  • Athletes: look for the NSF Certified for Sport stamp. The USA Doping Agency (USADA) has recognized this program as best suited to assist athletes in choosing supplements that do not contain banned substances for sports.
  • Download the NSF International App. It shows which products are NSF approved—right at your fingertips anytime, anywhere.
  • Check out the Dietary Supplement Fact Sheets published by the National Institutes of Health: Office of Dietary Supplements. This government agency has quick fact sheets about a variety of dietary supplements, including vitamins, minerals, probiotics, botanicals and herbs, and more.

Speak with a Registered Dietitian for supplement guidance and which supplements may (or may not) be right for you. NIFS Registered Dietitians are available to help you!

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This blog was written by Sabrina Goshen, NIFS Registered Dietitian. To learn more about the NIFS bloggers, click here.

Topics: NIFS nutrition supplements dietitian drugs sports nutrition dietary supplements registered dietitian

Build a Bigger Engine with Aerobic Training (Part 1)

GettyImages-605772224For whatever reason, there seems to be this notion in the fitness industry that if the workout doesn’t leave you on the ground gasping for air, it really wasn’t a good one. Or maybe that you didn’t work hard enough because you didn’t go running to the nearest trash can by the end. This could not be further from the truth; but unfortunately this way of thinking still seems to run rampant.

Not Every Workout Has to Be a Gut-Buster

One of my favorite quotes when it comes to strength and conditioning comes from Yuri Verkhoshansky, Russian professor, coach, and author who is credited as being the father of plyometrics. He suggests that “any idiot can make another idiot tired.” Now, I’m not calling anyone out. But this brings up a fantastic and often forgotten premise: that we should not judge the quality of a training session simply by how exhausted we feel.

Yes, we should challenge ourselves. Yes, there should be times when a workout feels more difficult. But here’s the key: not every workout should feel like a gut-busting knock-down, drag-out fight to the finish. If it does, it might be time to reevaluate.

A Quick Exercise Physiology Lesson: The Aerobic System

Our bodies rely on three energy systems to get us through everything from a tough workout session to washing the dishes, as well as basic organ function around the clock. They are all operating in some capacity all of the time, just in varying degrees based on the activity we’re doing. It’s not like a light switch, just on/off. Here are our players:

  • The ATP-PCr or phosphagen system (immediate)
  • The anaerobic or lactic system (short term; remember glycolysis?)
  • The aerobic system (long term)

Now, this isn’t intended to be a full-blown Bill Nye-esque science lesson. But I do want to focus on one of those energy systems for just a moment because it plays a massive role in how we are able to recover from task to task. And that is the aerobic system. It has the capacity to produce a great deal of energy, ATP—our body’s form of energy currency. The only problem is that is takes a little while longer to do compared to the other two. As a result, the aerobic system is responsible for replenishing and producing energy during rest periods or downtime between bouts of high-intensity exercise.

Much like any facet of fitness, this system can be trained directly. It typically comes in the form of slightly lower-intensity exercise (examples to come in a future post). So, while the exercise session might not feel like a back-breaker, the benefits that arise from it can come back twofold when looking at future training sessions. Essentially, what you’re doing when you are working on bolstering your aerobic system is building a bigger, more efficient engine.

Reap the Benefits of Faster Recovery

So, those high-intensity classes you take a couple times per week? Think about being able to sustain the same power and strength from round to round because you can recover more effectively during your rest periods. Or maybe you like to hop under the bar for some strength training in the form of squat or bench press. Well imagine being able to hit more of those heavy singles because you recover more proficiently between sets. That’s when the aerobic system really kicks into high gear: during rest. Yes, it is always contributing to some degree when it comes to ATP production (remember energy currency?). But its benefits really come to light during the downtime.

Building your fitness profile really requires a 360-degree approach. Some sessions may focus on strength. Some sessions may focus on high-intensity training. And some should take the time to address the aerobic system. Not only do they provide the body some much-needed recovery time; these sessions can also allow you to get more out of those strength and high-intensity workouts as well.

Next time, I’ll cover specific examples of how you can train your aerobic system. Until then, stay strong, my friends!

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This blog was written by Lauren Zakrajsek, NIFS Health Fitness Instructor, Personal Trainer, and Internship Coordinator. To learn more about the NIFS bloggers, click here.

Topics: strength recovery high intensity energy aerobic