NIFS Healthy Living Blog

Improving maximal aerobic capacity, aka VO2Max, as well as lactic threshold can have a huge impact on overall performance. You can improve VO2 max through long slow distance (LSD) training, pace and tempo training, interval training, high-intensity interval training, and fartlek training.

Training by Experience Level

Training to improve your aerobic capacity varies according to your experience level:

• If you are just starting to train to be an endurance athlete, I suggest that you stick with a long slow distance training until you build your aerobic base, which would be more for mileage/time rather than overloading your lactic threshold and VO2 max.
• If you are an intermediate endurance athlete, you should add one hard workout day (pace or tempo interval, high-intensity interval, or a fartlek) and a higher-mileage day than your usual LSD mileage.
• If you are an advanced endurance athlete, train one or two days with the pace and tempo interval training, high-intensity interval training, or fartlek training. You should also have a high-mileage day that is higher than your LSD days.

Training by Goals

Keep in mind, all this training is also dependent on your training goal. For instance, if you are training for cycling, a full marathon, a cross-country or track event, or are a casual aerobic athlete, long-distance rower or swimmer, and so on, you will want to make sure to have a plan with your goals in mind. Be sure to implement these training methods into your program so that you can hit your goals.

Aerobic capacity and lactic threshold training modules can be tailored to your individual goals and training program. Here are some examples and how they can apply to your training.

• Long slow distance (LSD): Should be race distance or longer and 70 percent of VO2 max, give or take.
• Pace and tempo: Should be done in durations of 20 to 30 minutes at lactate threshold or slightly above.
• Interval training: Should be done 3 to 5 minutes with a work-to-rest ratio of 1:1, and it should be close to VO2 max.
• High-intensity interval training: Should be 30 to 90 seconds with a work-to-rest ratio of 1:5 and greater than VO2 max.
• Fartlek: Has a duration of 20 to 60 minutes and varies between LSD and pace and tempo training intensities.

Keep in mind, some of these norms and training intensities are meant for aerobic distance athletes and are specific to how the training should be done.

Overall, I highly encourage you to play around with these training philosophies and develop it into an aerobic endurance program that is best suited for you. It’s easy to just go out and do the aerobic activity day in and day out, but if you have a more organized, structured program, you will not feel overwhelmed and you will see the gains in your aerobic performance that you have been looking for all along.

This blog was written by David Behrmann, NIFS Health Fitness Instructor. To learn more about the NIFS bloggers, click here.

Are you looking for a workout to strengthen and tone muscles without increasing bulk, but have not found anything that you like doing? Have you always wanted to increase your cardiovascular endurance and metabolism but hate doing regular old boring cardio? Well I might have an answer for you…

Barre is a workout that you can do every day. That’s right, a workout that you will want to do because it challenges you, but is low-impact enough that your joints will not be screaming at you the following day. Actually, studies have shown that Barre has various positive health effects! This fun and relatively new workout can help increase bone density while tightening skin and reducing cellulite.

What Is Barre Above?

Alright, well now you’re interested… so what is Barre, anyway? NIFS offers two Barre-based classes (Barre Above and Barre Fusion) (see the Group Fitness class schedule here). Today I dive a little bit deeper into what Barre Above is.

Barre Above is a fusion of yoga, Pilates, strength training, and ballet. Barre classes incorporate specific sequencing patterns and isometric movements that target specific muscle groups. This pattern of exercise helps improve strength, balance, flexibility, and posture. Barre exercise movements are low-impact and are made for all fitness levels. In Barre, the movements consist of plie squats, leg kicks, lifts, and holds as well as an array of core exercises.

At a Barre class, you can expect your whole body to be challenged in a way other group fitness workouts do not. Expect a great playlist to motivate you throughout the exercises because barre is a beat-based format. What does this mean? Beat-based formats are taught to the beat of the music. For example, you will squat to the main beat of the music up and down and eventually pulse it out until the beat changes. This type of workout is a blast because the music is the focal point of class. Expect playlists of popular and fun songs to move your body to at Barre every week.

A Total-body Workout

Do you know the shaking feeling you get in your core when you hold a plank position or when you hold a weight in your hand in an outstretched arm for an extended period of time? This is the type of challenge you will feel throughout your entire body at Barre. Barre offers an effective total-body workout focused on low-impact, high-intensity movements that lift and tone muscles to improve strength and flexibility made for every body.

If you are ready for a workout you enjoy coming to and feel accomplished afterwards, join us for Barre at NIFS.

See you at the Barre!

This blog was written by Payton Gross, Group Fitness Coordinator and Barre Above Instructor. Learn more about the NIFS bloggers here.

The Russian kettlebell is unique among exercise tools. It is an offset-handle weight that travels easily between the legs in a pendulum movement that can be easily seen in the kettlebell swing (two-hand and one-hand swings). If done correctly, the hips hinge straight backward as if you were trying to push a swinging door open while holding a tray. If you squat, even a little bit, there is little rearward movement and the door doesn’t open. Hip power is lost.

The Swing

When I teach future kettlebell instructors, I spend 2 and a half hours on teaching the swing. It is that complicated, and as you will see, that important. Hopefully, a future instructor can take that information and skills and teach a client how to do a reasonable swing in 10 to 20 minutes, reasonable enough to get through a workout. Regardless of how long someone has been lifting kettlebells, their swing skills can always be improved.

That hip hinge swing movement is used for kettlebell cleans and for the glamour lift, the kettlebell snatch. Without proper swing skills, it is impossible to progress very far into the art of kettlebell lifting and to truly get the unique rewards of kettlebell lifting.

Weight Exercises

Kettlebells are a weight and can be used for typical weight exercises—sometimes successfully, sometimes passable, and many times just plain head-shaking stupid. What most people miss is what the Russians discovered a long time ago. In one-on-one athletics, the first athlete to fatigue is likely to lose. In military hand-to-hand combat, the first soldier to fatigue is likely to die. The repeatable hip hinge–based movements (swings, cleans, snatches, clean and press, clean and push press, and clean and jerks) are tremendously effective in building strength/endurance, and work capacity. The variables are time of lifting, reps per minute, and of course the amount of weight used.

Tasha Nichols, a group fitness instructor here at NIFS, won her 58Kg weight class in Dublin, Ireland 2015, doing the one-arm snatch for 10:00 (hand switch at the 5:00 mark) with a 16kg KB with a total of 203 repetitions. The time was 10:00, averaging just over 20 reps per minute, and the weight was 16kg (35.3 pounds). That is work capacity!

Work Capacity Kettlebell Workout

Here is a little workout to give you an idea what work capacity training feels like.

Maxwell Circuit

• Swings: 15 
• Goblet Squats: 5
• Push-up: 5
• One-arm row: 5/5

That is 1 round and the workout is a minimum of 8 rounds and a maximum of 15. Rest long enough to complete the next round but no longer. Swings can be done with a dumbbell if a kettlebell is not available. Be careful when holding a dumbbell by the bell end. It can slip.

Block off the space you’re using to swing anything. Children and pets can walk in when they are least expected

Goblet Squat is done with the weight held at chest level. If this bothers your shoulders, hold the weight at arm’s length between your legs but be sure to actually squat. Do not allow it to become a sloppy deadlift.

Kettlebell Training

Training with kettlebells properly, anyone can seriously improve their strength and endurance. Like most activities, you must put in the time to practice and get better to see real results. Interested in learning more about kettlebell lifting and how you can increase your work capacity? Contact Rick Huse for more information. 

Enjoy the pain!

This blog was written by Rick Huse, CSCS, NIFS Health Fitness Specialist. To find out more about the NIFS bloggers, click here.

In a world where situations are ever-changing and a new “normal” is developing, athletes around the world are scrambling to adapt to their new training environments. For most, this new environment is where you are probably reading this now, your home. For the time being and for many people, traditional training methods of using barbells, dumbbells, kettlebells, etc. have morphed into substitutions of paint cans, backpacks, gallon jugs, or just about anything that can act as the “resistance” that your body has become accustomed to using.

Am I Going to Lose Everything I Gained in the Gym?

The first thought you probably had when this situation came about was, “I’m going to lose everything I’ve worked so hard to gain in the gym.” I guess that because it was one of the first things that passed through my mind, and now I believe that a well-equipped gym is one of the most taken-for-granted things I had in my life. It was always there. I could do just about anything I wanted or needed to do there. If the work I needed to do didn’t get done, it wasn’t the gym’s fault; it was my own.

If the work I needed to do didn’t get done, it wasn’t the gym’s fault; it was my own.

So now what? You are at home, you have a minuscule amount of equipment compared to what you had before (here’s another blog with some basics to consider), and your motivation may be low. The easiest thing to do would be the bare minimum and hope for the best when you can get back to the gym. The right thing would be to figure out a way to adapt your program to your environment and change the “maintain” mindset to the “gain” mindset. And I’m here to help you do that. The following are the essentials I believe can help you construct your home-based workout and continue to build on the progress you have made in the gym.

The Four Home-Training Building Blocks

As a coach, there are four main training blocks that can be completed at a very high level from home: mobility, power, strength, and conditioning. Follow along as I break them down!

Mobility

For many athletes (yes, me included), mobility is an area where we can always improve. This part of training is often overlooked or not taken as seriously as it should be. I’m here to tell you, being at home gives you the perfect reason to make this a focal point of your training. I say this because for many mobility exercises (shoulder/t-spine, hip, and ankle exercises), a big array of equipment is not needed. A couch or chair can serve as a perfect platform for you to improve mobility with very little time or effort setting up.

Power

No matter what sport you participate in, power development surely plays an integral part in your performance. In the gym we use medballs, boxes, and barbells to help foster this development. But at home, you can simply use an open space in your home/garage/outside to do this as well. Many “ground-based” plyometrics can be performed with minimal, if any, equipment. You can use vertical and broad jumps (both one- and two-legged) and various plyometric push-up variations, which should provide your body that same “explosive” feeling you have learned to produce. For the jumping exercises, this is a great time to work on the most important part of the movement, the landing.

Strength

This section might pose the biggest challenge to you simply because the heavy weights you are used to using are no longer accessible. I’m here to tell you that with a little creativity, you can still make improvements. One of the easiest ways to make simple bodyweight exercises more challenging is to elevate one of your points of contact, i.e. elevating your feet for push-ups or putting your back leg up on a couch or chair during split squats. Using a backpack full of books can serve as the extra resistance during these exercises, so dust off your old heavy college books and repurpose them.

Remember this as well: it’s not always about using heavy weight with low reps. If you are used to training in this fashion, doing more repetitions will help with your strength-endurance.

Conditioning

I believe that cardiovascular or conditioning work should be the easiest for you to adapt to while at home. With the exception of some of the specialized equipment you use in the gym (sleds, bikes, etc.), a lot of the training you do during this block requires only bodyweight resistance. Circuits (wall sits, mountain climbers, burpees), running (long-slow distance, interval training), and core work (plank and side plank variations, glute bridge variations) can all be performed with minimal equipment.

Take into account your “work-to-rest” ratio, which is how long you work versus how long you rest. Depending on what intensity you are working at, how long you are working for, or what activity you are doing, these numbers can be adjusted to fit your current fitness level. Generally, the longer your rest periods are compared to your work periods, the easier it will be. If you are unsure, start with 1-minute work to 1-minute rest and adjust for each subsequent workout as the days pass.

Which Will You Choose: Continued Progress or a Downhill Slide?

I leave you with this: the duration of the new normal can go one of two ways, the continuation of progress and improvements of athletic areas you need to work on OR a downhill slide of progress that leaves you fighting to get back to your current athletic state for the following months or years. Which one will you choose? If the work you need to do doesn’t get done, it wasn’t the home gym’s fault.

If the work you need to do doesn’t get done, it wasn’t the home gym’s fault.

This is a new challenge that you should accept and meet head-on with the attitude that nothing can derail your progress and a drive to continue to improve. In a few months, let’s look back on these days with pride knowing that you did everything in your power to get better.

This blog was written by Alex Soller, Athletic Performance Coach and NIFS trainer. To find out more about the NIFS bloggers, click here.

It’s time to get serious about goal setting. Setting goals can help you dig more deeply into fitness and think about what you truly want to accomplish. Goals can range from wanting to walk 1 mile to squatting 2 times your body weight, and absolutely everything in between and beyond. Everyone is on a different path to fitness, so whatever your goals may be is completely up to you.

The current trend in the fitness industry is to lose weight, gain muscle, and look like this girl or that guy that you see on social media. While there’s nothing wrong with setting a weight-based goal, we’re completely missing one major key of what working out can do for you: unlock your potential.

The Pitfalls of Rapid Weight Loss

When we set a goal of losing weight, we often lose sight of the importance of being strong and healthy, and this may lead to behaviors such as disordered eating or excessive exercise. All too often, people just want to get rid of the extra weight quickly. This mindset may encourage rapid weight loss that is not sustainable over the long term. Rapid weight loss can also lead to the loss of muscle mass, instead of fat loss, which is not desirable because muscle plays so many important roles in the body. It drives metabolism (having muscle increases Resting Metabolic Rate), keeps people strong as they age so that they can maintain their independence for as long as possible, and more.

Focus on Performance

The human body is capable of so much more than how much weight it can gain or lose—it has the power to perform. If you want to run a half marathon, you can train to run a half marathon. If you want to deadlift 300 pounds, you can train to do that. You can push the boundaries of your strength and endurance to do the things that may seem impossible right now. By going beyond what you think your limits are, you will adapt to the stress and become stronger. If you limit your goals to how much you would like to weigh, your focus is on what your body is, not what it can do.

It’s perfectly reasonable to have a weight-loss goal. There’s plenty of research describing how losing weight is beneficial for long-term health if one is overweight. However, it is rarely a linear process, and you must be prepared to face ups, downs, and plateaus. Having a goal that revolves around some type of strength or endurance feat will give you something to work toward even during the hurdles of a weight loss journey. You’ll be too distracted trying to do three pull ups or running five miles to notice those tiny, yet frustrating weight fluctuations that are a natural part of weight loss (and in general).

Beyond Your Weight-Loss Goal

Besides, the work doesn’t stop once you have reached your weight goal. The last thing you want to do is gain back what you spent months or years working toward. So if you haven’t yet set a goal beyond weight loss, now would be a great time to do so. The moral of this blog is to remind you that it’s okay to want to weigh “X” amount of pounds, but it’s not in your best interest to limit your body to a goal revolving around a number. You are capable of much more than just weighing a certain amount. Unlock your true potential by knocking down barriers and pushing the limits in and out of the gym.

This blog was written by Hannah Peters, BS, CPT, Health Fitness Instructor. To learn more about the NIFS bloggers, click here.

In recent years, carbohydrates have seemingly been blamed for our health problems. Many of us now shun potatoes, rice, and even fruit in fear of the dreaded pounds that could come with eating carbohydrates. While many diets demonize carbohydrates, others preach the benefits of higher-carbohydrate diets. Through all of this confusion, I will try to set the record straight.

No single food or food group should be blamed for weight gain or credited with weight loss. Carbohydrates span a broad range of foods, from beans, fruits, and veggies to pizza, pasta, cookies, and French fries. While we hate to oversimplify the equation, weight gain does come down to calories in versus calories out. If we eat too much of anything—even fruits and veggies—we will gain weight. The caveat is that fruits and veggies are nearly impossible to eat too much of because they are rich in fiber and low in calories, while other foods can pack a calorie-dense punch in a very small serving.

How easy is it to eat an entire bag of Chex Mix while you might struggle to eat half a cup of carrots?

Carbohydrates and a Healthy Diet

Carbohydrate-rich foods form the foundation of a healthy diet. The National Academy of Sciences recommends people consume 45–65% of their daily calories from carbohydrates. In a 2,000-calorie diet, this is equivalent to 225–335 grams daily. Carbohydrates are crucial for energy production in the body for working muscles, fuel for proper mental function, supplying vitamins and minerals, as well as providing large amounts of fiber for decreasing risk of chronic disease like heart disease and cancer. Many foods contain carbohydrates: whole grains, fruits, starchy veggies, milk and dairy, pasta, beans, and refined/processed foods.

Should I Avoid Carbohydrates?

In recent years, many have found lower-carbohydrate, higher-protein diets to be beneficial in weight loss. However, the long-term effects of such a diet are not well studied. Many “low-carb” diets can lead to an increase in foods like red meats, processed meats, and saturated fat–containing foods like cheese, butter, and cream. Carbohydrate-rich foods provide numerous health benefits and you should not avoid them. Certain areas of the world called Blue Zones offer an interesting look into the benefits of a higher-carbohydrate diet. They have not only the highest rates of longevity but also very low rates of chronic disease. Blue Zone populations consume 95% of their calories from vegetables, fruits, grains, and legumes and eat meat sparingly.

“Good” Versus “Bad” Carbohydrates

But it is important to think about the types of carbohydrates you are consuming. Unrefined carbohydrates are unprocessed, whole foods that are high in fiber (and many other nutrients) and digest more slowly. Unprocessed, whole-food carbohydrates help you feel fuller and get you through the day feeling less hungry. Processed carbohydrates lack fiber and may have added oils and sugar—they can leave you feeling low on energy as they are quickly digested and burned for fuel. Unprocessed carbs are key to long-term health and can help with weight control. They also guard against type 2 diabetes, cancer, and cardiovascular problems. Try to limit most processed carbohydrates because they are low in nutrients and high in calories.

Unprocessed Carbohydrates

• Oats
• Brown rice
• Fruit
• Beans
• Whole grains
• Vegetables

Processed Carbohydrates

• Soda
• Baked treats
• Packaged sweets/snack foods
• Fruit juice
• Breakfast cereal

Did you now that in 1915 the average American consumed 17.5 pounds of added sugar in a year? As of 2011, the average American consumed over 150 pounds of sugar annually!

In summary, carbohydrates should be welcomed to not only help with weight management but also prevent disease. Make most of your carbohydrates whole, unprocessed foods for a balanced, healthy diet while enjoying the processed/refined carbohydrate foods in moderation. And if you’d like some help with figuring out what to eat, look into Nutrition Coaching at NIFS.

This blog was written by Lindsey Hehman, MA, RD, CD. To learn more about the NIFS bloggers, click here.

How do you define fitness? Whatever your answer is, it will shape the way you work out, influence the goals you set, and impact your long-term health. Although everyone might have different perceptions of what “fitness” means, the American College of Sports Medicine has defined what Health-Related Physical Fitness is and has broken it down into five measurable components.

Whether you know it or not, you use every single component in everyday life, so incorporating all of these factors is vital to maintaining high quality of life. As people age, their ability to carry out certain tasks may become compromised if they don’t regularly challenge their bodies to perform them. So, one key to aging well is to incorporate all of the components of health-related physical fitness.

The 5 Components of Health-Related Physical Fitness

• Body composition is the comparison between fat mass and fat-free mass, where fat-free mass is everything that isn’t fat, including muscle, organs, bones, and so on. This proportion can be used to assess risk for potential health issues, or used as a baseline measure to be retested after you have started a program to track progress. There are several ways to measure body composition; the most accurate methods are water displacement or the BodPod. (See the complete list of NIFS assessments here.)
• Muscular strength is the amount of force a muscle can produce in a single maximal effort. Muscular strength is relative to a specific muscle group, so a few different tests may need to be conducted to get an overall picture of your strength. A grip strength test is popular and has been utilized frequently in the fitness world. Another is the Repetition Maximum test that can be conducted by the NIFS Health and Fitness Instructors. It is important to gain or maintain muscular strength as you age for many reasons, but we use our strength every day.
• Muscular endurance, by definition, is the ability of a muscle group to execute repeated contractions over a period of time sufficient to cause fatigue. Like muscular strength, it varies depending on the muscle group, so multiple tests are required for a proper assessment. A common muscular endurance test is the pushup test (you’re probably familiar with this test from grade school). Another is the plank test, which is relatively new, and is a way to get a baseline value for core endurance and use it as a reference for retesting to measure improvements.
• Flexibility is having the ability to move a joint through its full range of motion. Having sufficient flexibility can help prevent injuries and ensure that you’re capable of performing movements that you may need in daily life. While having enough flexibility is necessary, too much can be risky.
• Cardiovascular endurance is the ability of the cardiovascular and respiratory systems to deliver oxygen to the rest of the body during continuous exercise. It’s directly correlated to our ability to perform exercise that involves large muscles, dynamic movements, and moderate- to high-intensity workouts over a period of time. Having adequate cardiovascular endurance is vital to keep up with daily activities.

Start with Things You Like to Do and Then Branch Out

If your main goal is to achieve good health, you’ll want to make sure you distribute your training so you can hit all of the categories. Start by doing things you like to do and then branch out by trying new things. It’s common for people to tailor their training to one particular component for whatever goal they are trying to achieve, but to be lacking in most of the other areas. For example, a marathon runner might excel in cardiovascular endurance but be less than average in muscular strength or flexibility.

On the other hand, someone who only lifts heavy weights may lack cardiovascular endurance. However, the runner may start to notice running is easier after incorporating resistance training into their routine, or their muscles might feel great after adding stretching and mobility work. This doesn’t just apply to marathon runners or heavy lifters; almost everyone can benefit from including all 5 components into their routines.

To sum it up, you should practice different forms of exercise to achieve a holistic fitness regimen. It’s perfectly fine to include running, resistance training, or group fitness such as yoga or STEP, and that’s just a few examples. There are so many different activities and classes to try to help get you to your goals. When you blend different types of training, you can discover your talents, weak links, and things you just enjoy doing.

This blog was written by Hannah Peters, BS, CPT, Health Fitness Instructor. To learn more about the NIFS bloggers, click here.

Cycling is becoming one of the most popular trends in group fitness. Not only is it a great class to take for the cardio benefits and calorie burn, cycling is a great resistance-based workout that can also increase strength. Many cycling classes are tracked in two ways, by RPM or BPM. RPM stands for “repetitions per minute,” and BPM stands for “beats per Minute.” Each form is usually cued by an instructor to ride to a particular beat. Both are great options; which one to choose just depends on personal preference. If you like music, you might enjoy a beat-driven class more. If you enjoy competition, you might enjoy an RPM-style class more.

Not only can a cycling class burn up to 600 or 700 calories a session, cycling classes are also fun to participate in due to the motivation to push and work hard from the instructor and the fun music played in class. With each person being on their own bike, participants control their own resistance with guided cues from the instructor on approximately how much resistance to add. This makes the class a great option for all levels, since each individual is in control of their own resistance. Resistance is recommended based on the kind of track an instructor is teaching. For example, if the instructor is cuing sprints, they might also cue for lighter resistance so you can move as quickly as possible. If you are simulating a hill, you might be cued to add a lot of resistance to make you have to use more strength and power to “get up the hill.”

Benefits of Group Fitness Cycling Classes

Among the benefits of this group fitness class are the following:

1. Low-impact cardio option
2. Stress release
3. Cardiovascular
4. Muscular endurance

What to Know Before Your First Class

If you have not been to a cycling class before, have no fear! If you are on your way to a class, try to get there 10–15 minutes early. This gives you time to meet your instructor and learn how to set up your bike appropriately for your height. Usually a studio will have shoe rentals or bike cages to be worn with normal shoes. If you would like to purchase cycling shoes, you can find many different options online.

Cycling at NIFS

Cycling is offered daily at NIFS at a variety of times. Check out the Group Fitness Schedule to find a class that works with your schedule!

This blog was written by Brittany Ignas, BS in Kinesiology, 200 Hour Yoga Alliance Certified, Stott Pilates Certified, and Fitness Coordinator. To find out more about the NIFS bloggers, click here.

To achieve electricity, you need a complete circuit; the same thing goes for achieving a higher level of fitness, which is why circuit training is a great total-body workout. It can be classified as a type of endurance training, resistance training, strength training, or high-intensity interval training, which is why we can see great results from it.

Circuit training is great for activating all of the muscles in the body. Typical circuit training is performed in a style of circuits. You will complete one exercise for a duration of time, and then switch to a new exercise and repeat the total circuit multiple times. During each circuit, you’ll perform upper-body, lower-body, and core exercises for maximum body results. Baylor University did a study proving that circuit training is the most efficient way to enhance cardiovascular and muscular endurance.

Endurance Training

Endurance training is the ability to exert yourself over a period of time. It’s also the ability to complete any aerobic or anaerobic exercise relating to cardiovascular and muscular endurance. Cardio endurance allows you to pump oxygen to your body for an extended period of time. This type of training is great for your overall health. Some of the benefits include the following:

• Higher levels of energy
• Heart function improvement
• Increased metabolism
• Performing daily life tasks more easily

Resistance Training

Resistance training is muscle contraction from external resistance during exercises. The external resistance can come from many pieces of equipment, including weights, bands, balls, boxes, disks, sleds, and definitely using your body weight. Benefits of resistance training might include the following:

• Help keeping muscles strong during aging
• Decreased osteoporosis
• Lower blood pressure
• Increased metabolism

Strength Training

Strength training is lifting heavier weight to increase muscular strength. Benefits of strength training include the following:

• Lower abdominal fat
• Better cardiovascular health
• Controlled blood sugar
• Reduced cancer risk
• Lower risk of injury
• Stronger mental health
• Osteoporosis prevention
• Increased confidence

High-Intensity Interval Training (HIIT)

High Intensity Interval Training is a workout that alternates between intense bursts of activity and fixed less intense or rest periods. This type of workout is typically known as a “fat blaster” filled with many benefits that include the following:

• Efficiency
• Cardiovascular strength/endurance
• Muscular strength
• Weight loss, muscle gain
• Increased metabolism
• Can be done anywhere

So Why Circuit Train?

Circuit training is not just an exercise that can burn hundreds of calories. Based on the benefits of the types of training a circuit training class is made up of, it can lead to major results in total fitness and health. You can find circuit training on the NIFS Group Fitness Schedule with our highly educated staff Mondays, Wednesdays and Fridays at 4:30pm.

This blog was written by Brittany Ignas, BS in Kinesiology, 200 Hour Yoga Alliance Certified, Stott Pilates Certified, and Fitness Coordinator. To find out more about the NIFS bloggers, click here.

“Cardio day” are maybe the most dreaded words for a gym-goer. Or maybe you’re a cardio junkie and love nothing more than knowing it’s on the exercise menu for the day. In any case, most seem to have a love/hate relationship with cardio. We know we need it, but it can be a long and arduous task.

What the heck does it even mean, anyway? You hear about high-intensity cardio and low-intensity cardio, but surely one has more benefit than the other, right? Well, as always, it depends. Cardio is really just a fitness buzzword that’s been tossed around so much that it seems to have lost its definition (probably around the same time the Thighmaster started to fizzle).

What Is Cardiorespiratory Fitness?

According to Wikipedia, cardiorespiratory fitness refers to the ability of the circulatory and respiratory systems to supply oxygen to skeletal muscles during sustained physical activity. Blah, blah, technical jargon, blah, blah. Basically, it’s how well your heart and lungs can work together to pump blood, oxygen, and nutrients to exercising muscles. Again, it still doesn’t tell us a whole lot, but we’re getting somewhere.

Look at that simplified statement again and you’ll notice three key words: heart, lungs, and exercising muscle. (Okay, that’s four words, but you get the idea.) To simplify the discussion, I’ll focus primarily on aerobic adaptations, meaning improvements in the ability to use oxygen to produce energy, which are very different from anaerobic adaptations.

That being said, the primary aerobic improvements we’ll assume are the following:

• We can help the heart and blood vessels improve their abilities to pump blood throughout the body.
• We can improve the ability of the lungs to take in oxygen and put it in the blood.
• Lastly, and this is often overlooked, we can train the muscles to become more efficient in using the oxygen from the blood.

Great, so how do we do this?

Global Improvements vs. Local Improvements

Before we answer that, it’s helpful to make a distinction between the two types of improvements we’re chasing: global (or systemic) and local (or specific). The first two areas (heart/blood vessels and lungs) are considered to be global changes, while improvements within the exercising muscle are the local changes.

Car analogies are helpful here (even if you’re like me and know diddly about cars). You might think about the global changes as being similar to putting in a bigger gas tank or a better air intake, while local changes might be similar to adding lighter wheels and tires. One is making a change to the engine, or system, while the other is making a change to a specific part to enhance the efficiency of the system already in place.

How to Train for Cardio and Respiratory Fitness

Now, back to what we can do to make these changes in your body.

Cardio

Let’s start with your gas tank, err, I mean your cardiovascular system. Your heart can either be trained to fill up with more blood, or it can be trained to contract more forcefully with each beat. But you can’t do both at the same time. Depending on your training style, your heart will change in different ways. This is vastly oversimplified, but training more aerobically (think endurance athletes) will adapt your heart to fill with more blood, making it “stretchier.” Training anaerobically, on the other hand, will cause an adaptation to your heart, making it thicker and stronger with each beat. Again, this is not absolute, but different training styles trigger different hormonal responses in the body. Without guidance for your training styles, some of those hormones might compete with each other. Therefore, instead of training to become really good at one thing, you might be training to become extremely average at both. Now, for competitive athletes who need aspects of both endurance and strength/power, timing becomes invaluable, and I’ll refer to the great mind of Joel Jamieson on that front.

Respiratory

As for the second part, several different improvements can happen in regard to your lungs, or respiratory system. Let’s focus on the more basic adaptations. First, your lungs will improve in their ability to fill up with more air, similar to the change in the heart we discussed earlier. This is partially due to the strengthening of the respiratory muscles. However, how the ribcage moves (or doesn’t move) during respiration becomes increasingly important so that you don’t reinforce inappropriate breathing muscles. This is a topic for another blog post, but if you’re really curious, check out this in-depth intro to the mechanics of your ribcage during respiration for now.

The other major improvement in your respiratory system I’ll discuss is on a much smaller, even microscopic scale. The way we get oxygen through our lungs is through tiny little sacs, just like the one in the picture here. Each sac is covered in a net of tiny blood vessels called capillaries, which is where the oxygen enters the bloodstream. With proper training this net becomes more dense, which allows more oxygen to enter the blood with each breath. More oxygen means more energy, just like more air into an engine means more power!

Muscular

Lastly, we can make changes in specific muscles if we so desire. It makes sense that a runner would want to train the legs specifically, just as a baseball pitcher trains his arm. One improvement is very similar to the change in the lungs: capillary density. Your muscles have those capillary nets just like your lungs do, and aerobic activity in a particular muscle group triggers more capillaries to form in those areas. Ergo, we get more blood and nutrients to the exercising muscle.

Another major change we see within the muscle is that muscle cell’s ability to actually use the nutrients it’s receiving. So, you have to both get the energy source to the muscle and make sure your muscles are using every possible molecule that they can to generate energy for your training. This happens in a number of ways, such as increasing the size of the muscle cell, increasing the amount of energy-producing mitochondria within the cell, and increased levels of the enzymes responsible for aerobic energy production.

Get Aerobic Improvements, Then Endurance, and Never Get Bored

Of course, the type of training you are doing heavily influences the adaptation you will be stimulating, but for aerobic improvements, these are some of the general mechanisms of those changes. Because the majority of people associate the term “cardio” with high levels of endurance, my assumption is typically that when somebody says, “I need cardio,” what they really mean is, “I get tired really fast during my workouts.” Therefore, it is almost always my priority to place an emphasis on chasing aerobic improvements initially.

After you’ve established a solid aerobic capacity, you can really start to push harder for longer periods if you so desire or require. Remember, your body is smart, but it’s virtually pointless to be training for two completely different goals at one time, only to make crawling progress in each. Instead, if you time your training accordingly, you can consistently make the improvements you desire, and never get bored in your training!

This blog was written by Tony Maloney, ACSM Certified Exercise Physiologist and Fitness Center Manager. To find out more about the NIFS bloggers, click here.