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NIFS Healthy Living Blog

What Is VO2 Max Testing?

GettyImages-915799224VO2 max testing, or graded exercise testing, is a treadmill run or cycle to volitional fatigue—or pretty much going until you must stop. The test will tell us how many liters of oxygen you are able to take in and use for cellular respiration.

Physiologically, people use oxygen for a variety of things. The main purpose is for the oxygen to get into the cells’ mitochondria so that it can be used to generate adenosine triphosphate (ATP), which is the main energy source in the body. People use ATP to do pretty much everything: move our muscles, think, and even digest food. So the more oxygen you can take in and convert to energy, the longer and faster you can run due to this surplus of energy you are making at the cellular level.

What the Test Is Like

The test starts at a low speed and no incline on the treadmill. Then every so often the treadmill gets a little faster and a little higher. The increases are almost unnoticed and most start out walking. On the other hand, on the cycle, the resistance gets a little harder occasionally and the participant is expected to maintain the same rotations per minute (RPM). With both tests, the person is expected to go until they feel they must stop, when their workload is too great to maintain or their legs become too fatigued to continue.

What the Test Measures

While exercising, you will be hooked up to different devices to monitor your vitals such as a heart rate monitor and a ventilator of sorts. Some tests will also measure blood pressure and rate of perceived exertion. Trainers can use the information from these devices to generate a customized endurance program for you to push you to increase your VO2 max, and in turn, your overall endurance. VO2 max testing is a great way to know where you are currently at in your endurance training. It is comparable to doing repetition max testing on weights in strength training.

How the Results Can Shape Your Training

Trainers can utilize the data from a VO2 max test to make a program customized to your physiology. From a VO2 max test we can see what your heart rate maximum is exactly, and using these numbers we can get more accurate training zones for you. The ventilator gives a variety of useful data such as your aerobic threshold, or the point when you really start to breathe hard. This is the point where a person really starts to hate running, so knowing this point can help us stay below that more often, making the training more enjoyable while still receiving the benefits. Knowing different heart rate zones can help prevent overtraining and help push you to your fullest capacity, causing your body to adapt and consume more oxygen.

The measurements of blood pressure and perceived exertion are more common in a clinical setting to ensure normal responses to exercise, so they are not always necessary in healthy populations. The trainer can use rate of perceived exertion, however, to know how a person feels at certain running speeds. If someone feels that they are working very hard at a faster speed, the trainer may stay below that speed more often to make the runner more comfortable; and if a certain speed feels very easy, the trainer may ramp up the pace.

VO2 Max Testing at NIFS

Korr CardioCoach metabolic system VO2 max testing is offered here at the National Institute for Fitness and Sport. Connect with a trainer at the track desk if you have any interest or questions. VO2 max testing is a great way to gauge your endurance level going into marathon training, and a great way to pace yourself in a race by knowing where you are at physiologically at different workloads. Knowing your VO2 max as a runner is like how a powerlifter knows what the maximum amount of weight they can bench is. If you don’t have a benchmark going into a competition, you run the risk of over- or under-shooting and not performing as well. You don’t necessarily have to partake in a full VO2 max test if you are concerned about going to volitional fatigue. There are submaximal tests and estimation equations that can be utilized to get a rough estimate of your VO2 max. See a NIFS staff member with any questions you have pertaining to a VO2 max test or to schedule your test today.

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This blog was written by Grant Lamkin, NIFS Health Fitness Specialist. To learn more about the NIFS bloggers, click here.

Topics: personal training heart rate energy programs vo2 max oxygen fitness assessment testing

A Spoonful of Fitness: Should You Work Out When You’re Sick?

GettyImages-674772578-1Have you ever woken up feeling like a truck ran you over? This might be due to an underlying illness; whether it be a cold, flu, bronchitis, or some other bug, it seems to happen to everyone at least once per year. When it comes to fitness, we sometimes have to make a choice: “Should I work out or should I rest?” The answer to this is not as cut and dried as it might seem. We’ll look at when it’s a good idea to stay home and chill and when you can just “sweat it out.”

Making the Call: Should I Cancel My Workout?

Sometimes just keeping up with your daily routines can help you feel better, especially as you move through the day. You might even pick up energy from exercise and activity instead of staying idle at home. A few guidelines dictate whether you should green-light a workout. According to experts, a major factor to consider is body temperature. Having any kind of fever is an immediate red flag, especially at more than 101 degrees. Another obvious red flag is if you are unable to keep fluids down. Anytime you are dehydrated, your body does not function at peak capacity. Here are some additional ideas to help make the decision.

Going Back to Working Out After Being Sick

When you feel like you are ready to go back to the gym, try to ease into your workout. Your body (namely your T-cells) has been fighting a battle. A quick assessment of your symptoms should give you a good indication of whether you are good to go. Temperature, fluids, and blood pressure are all surefire ways to draw that line in the sand.

How to Keep from Getting Sick Again

Finally, you should hopefully, at this point in your life, understand the importance of illness prevention—not only for you, but also for those around you. The routine of washing hands wasn’t widely practiced until about 150 years ago when a Hungarian doctor named Ignaz Semmelweis discovered that when his crew washed their hands between patients, the number of diseased and dying patients dropped off immediately. The long forgotten disease, puerperal fever (sometimes known as childbed fever) was nearly eradicated by simply implementing a hand-washing regimen. Today’s world allows almost endless opportunities to not only transmit illness, but also prevent them. Enough history lessons, though. You get the point: wash your hands often, please.

Ask for Help from the NIFS Staff

NIFS staff can help you in a number of ways, especially when deciding whether exercise is right for you when you are not feeling well. Blood pressure monitors, both electronic and manual, as well as an oxygen sensor are available to all members. A well-stocked first aid kit and a staff well versed in first aid and safety are also on your side. Always remember, your workout is important, but your health is priceless.

Muscleheads evolve (and rejoice)

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This blog was written by Thomas Livengood, NIFS Health Fitness Instructor and Personal Trainer. To read more about the other NIFS bloggers, click here.

Topics: fitness center Thomas' Corner nifs staff workout illness oxygen illness prevention handwashing

Out with the Old: Change Your Workout to Improve Wellness

GettyImages-529079056.jpgTake yourself back to the 1970s when Arnold Schwarzenegger was preparing for the Mr. Olympia contest. Everybody wanted to try his incredibly intense workouts. It has been rumored that Arnold’s workouts were so intense that at least three different trainers would have to give him separate workouts in order to keep up with him.

Following in the king’s footsteps, anyone who wanted to be a bodybuilder or get into shape undeniably thought that working out six days a week, two times a day, was the way to make this happen. Luckily for us and all of America, workouts have evolved from the old-school mindset to the new school.

Varying Your Workout

Old School: Sticking to the same workout for months.

Although this was the go-to, this pattern isn’t always going to work. When you do the same sets and reps for every workout, you miss out on allowing your body to change.

New School: Implementing the SAID principle.

The SAID principle is an acronym for Specific Adaptation to Imposed Demand. When the body is put under different stress, it starts to adapt. In other words, the body is trying to get better. By providing your body with different types of sets, reps, and loads, you are able to tap into more of your muscle fibers, increase strength, and avoid plateaus.

Targeting Training

Old school: Focusing only on the trouble spots.

This type of focus won’t work for the majority of people who are coming to the gym to work out or lose weight. When there is variety in your workouts, there is room for growth and development. Focusing only on the areas that are the weakest isn’t going to help the areas that are already strong continue to get stronger.

New School: Correcting trouble spots while also training strong areas.

Correcting a weakness and building on a strong point at the same time will enable you to improve your body as a whole. A way to correct those problem areas is to figure out exactly why they are causing you problems. The Functional Movement Screen captures fundamental movements, motor control within movement patterns, and competence of basic movements uncomplicated by specific skills. It will determine the greatest areas of movement deficiency, demonstrate asymmetries, and eventually correlate these with an outcome.

Cardio vs. Strength

Old School: Focusing only on cardio will increase weight loss.

While it’s important to incorporate cardio into your workout regimen to help build and keep your cardiovascular systems stronger, it is not the only type of exercise that is needed for weight loss. Focusing only on cardio will lessen your chances of building muscle.

New School: Getting a healthy dose of both cardio and strength training will improve overall health.

Much like how a car stays warm after it turns off, the same can be said about your body after you finish a workout. EPOC (excess post-exercise oxygen consumption) explains how your body’s metabolism can continue to burn more calories. Resistance training can provide a greater EPOC effect than running at a steady speed.

Out with the Old and in with the New

Training methods will come and go, and at some point the new-school methods will become old school. At NIFS we offer a wide variety of programs, assessments, and education to help turn those old habits into new routines. Stay positive, be willing to accept change, and explore to find what works best for you!

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This blog was written by Ashley Duncan, Weight Loss Coordinator. To learn more about the NIFS bloggers, click here.

Topics: NIFS weight loss workouts calories resistance metabolism functional movement assessments programs wellness mindset assessment plateaus targeting workouts change oxygen