HEALTH AND FITNESS: Stay cool (and fit) in the pool

There is almost nothing that feels better than going for a swim on a hot summer day. Beyond being a fun way to cool down, swimming is a great way to get in shape. Swimming is also an excellent exercise for injury rehabilitation or for people with certain conditions like arthritis.

The fitness benefits of swimming are well established. Since swimming is a whole-body exercise it uses all of your major muscle groups, building strength, endurance and aerobic fitness. Highly trained swimmers have VO2max values, considered the best measure of aerobic fitness, that are similar to runners and cyclists.

Depending on the stroke and speed, swimming ranges between 5 to 10 METs. (METs are units used to measure the intensity of activity; one MET is equivalent to sitting at rest) For example, doing the backstroke at a moderate speed is about 5 METs while swimming laps freestyle with vigorous effort is about 10 METs.

This range is similar to walking at 4 mph up to jogging at a 9 minute per mile pace. What if you are just spending time in the pool or lake rather than swimming laps? Swimming leisurely is about 6 METs, still a decent workout.

Swimming is a great way to burn calories, too. Even at a moderate pace, swimming laps for 30 minutes can burn over 200 calories. The exact energy expenditure depends on the stroke (butterfly is highest, backstroke is lowest) and the speed, but for most people swimming will burn as many calories as spending the same amount of time exercising on land.

There are two big reasons for this. First, water is denser than air, so you need to expend more energy to move your body through the water. Second, swimming is a whole-body exercise which requires more muscle activity compared to walking or jogging which mostly involve the legs.

You may be surprised to learn that novice swimmers expend more energy per lap than elite swimmers. For example, one study showed that competitive swimmers expend only 280 calories to swim a mile, while less experienced swimmers burn about 440 calories to cover the same distance. The reason for this is that experienced swimmers are more efficient, so they expend less energy.

Aquatic exercise is popular for both therapeutic and fitness purposes, especially for people who don't tolerate exercise on land well. When you are submerged up to your waist, 50% of your weight is supported; when you are up to your chest, about 75% is supported. This reduces the impact of exercise in the water, perfect for people who have arthritis, osteoporosis, severe obesity, or who are recovering from injuries.

Exercise in the water doesn’t have to mean swimming laps. Water aerobics, aqua walking or jogging, and resistance training using foam “weights” or webbed gloves offer safe ways to increase strength and endurance for almost everyone. Most fitness facilities that have a pool offer group aquatic exercise classes and you can find instructions online for exercises that you can do in a pool, lake, or even at the beach.

The hot summer weather makes swimming and other water activities appealing. But even if you don’t use the time for exercise, spending time playing in the pool or lake can still burn as many calories as going for a walk and is a great way to have fun and cool down!


Health & Wellness: SMART Habits for Improved Fitness and a Healthy Career

One of the biggest things that keep people from improving their health and level of fitness is their tendency to overdo. Instead of making small, sustainable lifestyle changes, they undertake seven-day challenges, fad diets and ridiculous workouts. The problem with this approach is that, although these things might work in the beginning, they’re impossible to stick to, because they aren’t realistic.

To improve your health and to stay healthy for your career, you must create habits that lead to positive results. The focus should be on making small lifestyle changes that you can build on. When I coach first responders, I like to explain that we all must build habits that make us SMART. Of course, the fire service loves acronyms; here, smart stands for sleep, move, agua (water), real foods and tenacity.

It doesn’t matter your goal: weight loss, strength gain, improved performance or general health. Habits that make you SMART will help you to get there.

Habit No. 1: Sleep

Sleep is the foundation for optimal health. More than 5,000 studies show that sleeping fewer than seven hours per night is associated with adverse health outcomes, such as weight gain, obesity, diabetes, hypertension, heart disease, stroke, depression and cancer. Sleeping fewer than seven hours per night also is associated with impaired immune function, an increase in the level of pain, impaired performance, an increase in errors and greater risk of accidents.

As first responders, we work long shifts and have little control over call volume and sleep. I am not advising that we do away with traditional schedules … yet. However, if you want to improve your overall health and avoid spending your retirement with one or more chronic diseases, here are some habits that you must implement when it comes to sleep:

•  Get 7–8 hours of sleep on your off days to help to combat the negative effects of poor sleep on duty

•  Go to sleep at the same time and wake up at the same time every day

•  Turn off electronic devices at least 30 minutes before bedtime; the blue light that’s emitted by your cellphone screen restrains the production of melatonin, which is the hormone that controls your sleep-wake cycle, aka circadian rhythm Habit No. 2: Move

Regular physical activity plays an important role in maintaining healthy body weight, promoting good health and performing on the fire ground. The more that we move, the more muscles that are used, and the more calories that are burned. Finding ways to be more active during the day has numerous health benefits, including improved mood and cognitive function.

Being more active throughout the day is only part of the equation. As a first responder, it’s imperative that you maintain your strength and stamina to be able to perform the demanded tasks. Consistent and functional workouts are one of the best ways to reduce injury and improve performance.

If you are just coming from “the leathers”—meaning that you haven’t been very active recently—start with easy workouts. Focus on improving mobility and perform bodyweight movements to improve strength. Try to include some cardiovascular exercise in weekly workouts. Don’t go back to your old high school workout programs and think that you “still got it.”

Trust me, as a firefighter, EMT and/or medic, you must train more functionally for the job. The term “functional” is thrown around a lot these days. For you and me, it means integrating exercises that help us to move and perform better on the rescue scene and off of it.

Further, workouts don’t need to last hours and always be intense. They just need to incorporate the right components and be consistent.

Here are some habits that you must implement when it comes to moving:

•  Functional exercise at least three times per week (at least 30 minutes)

•  Get at least 8,000 steps per day

•  Perform at least one 30-second stretch every day Habit No. 3: Agua (drink water)

Admittedly, my Spanish inflection was needed to keep the acronym solid. That said, regardless of whether you call it ague or water, drinking enough can dramatically improve your health. Furthermore, out of all of the habits that are listed in this column, this is the easiest to build.

Your body depends on water to survive. Every cell, tissue and organ in your body needs water to work properly. Your body needs water to maintain temperature, remove waste and lubricate joints.

Hydration is critical for optimal performance. Progressive dehydration from exercise (or fire ground operations) impairs performance, mental capacity and perception of effort and can be life-threatening. With as little as a 2 percent body water shortage, the ability to perform high-intensity activity can be impaired greatly. Drinking enough water also can lead to more energy and a decrease in hunger pangs, because they often are an indicator of a lack of hydration rather than of food.

Here are some habits that you must implement when it comes to consuming water:

•  Drink at least 64 ounces per day, with a target of one-half your body weight in ounces

•  Don’t rely on thirst; drink before, during and after your shift

•  Carry a water bottle on the apparatus and around the station Habit No. 4: Real foods

Food is fuel. It feeds our cells, brain and muscles and greatly affects how we feel, think and move.

If you put subpar gasoline in the tank of your emergency vehicles, you get subpar performance from them. The same is true regarding subpar food and the human body. Eating real foods reduces your risk of heart disease, diabetes, stroke and cancer. Real foods provide our body with the nourishment that’s necessary to maintain a healthful, active life.

What are real foods? Simply put, they’re foods that come from the earth and can be traced back easily to their origin. Real foods are fruits, vegetables, beans, whole grains, nuts, seeds, dairy, eggs, meat, fish and poultry—items that everyone’s grandparents would recognize and ate as staples in their family’s meals.

Processed foods, although convenient, can leave us feeling unsatisfied and constantly searching for something that fills that need. Food that are heavily processed often include unhealthful levels of sugar, sodium and fat. They also include chemicals and preservatives that can lead to serious health issues and can affect mood and energy levels.

Habits that you must implement when it comes to consuming real foods:

•  Shop the edges of the grocery store; all of the fresh foods typically are found on the outside aisles; the highly processed foods typically are on the middle shelves

•  Look for foods that have five ingredients or fewer

•  Try to eat at least five portions of a variety of fruits and vegetables every day Habit No. 5: Tenacity

Tenacity is the mental strength to resist opposition. It’s the quality of staying determined and persevering when the going gets tough and sticking to a project, task or deadline. According to the dictionary, tenacity means “to grip something firmly” and “being very determined.” When you develop tenacity, you continue doing what’s required to get the outcome that you want, particularly when things get difficult.

Tenacity doesn’t come naturally. You can build tenacity like you can build muscle. Further, just like building muscle, building tenacity takes work and consistency. It’s the final component of the SMART formula and brings everything together to ensure that you follow through with the other habits.

Tenacity habits include:

•  Surround yourself with people who will support and challenge you

•  Find your “why”—What are your reasons for wanting to get healthy?—and write it down

•  Take action every day Determination

At the end of the day, it boils down to decisions and actions that your future self would want to high-five. Don’t wait until you are injured or sick to improve your health. Focus on creating habits that improve your sleep, find ways to move more and train functionally, make sure that you hydrate daily with water, eat real foods and take steps to be more tenacious when it comes to your health. Your crew, your family and your community are counting on you.

Aaron Zamzow will present “Improving Fire ground Performance and Resilience” and “Heathy You = Healthy Crew: How to Create a Fit and Healthy Culture” at Firehouse Expo. 

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