“Why should I put myself through the agony?” you ask. First, you need to know where you are at this moment in time. Second, it’s cool to see how far you’ve come after you’ve implemented some changes. And last, sometimes these are the numbers that can help you stay on track! Contact the American College of Sports Medicine (ACSM) to determine which facilities offer quality assessments by reputable health professionals in your area. ACSM professionals are found around the globe. An individual fitness assessment should include measurements described in each of the following sections.
Cardiorespiratory Fitness
Cardiorespiratory fitness represents the heart’s ability to pump blood, the lungs’ ability to handle increased volumes of air, and the muscles’ ability to utilize oxygen for energy. As your cardiorespiratory fitness improves, your heart becomes more efficient, and you might notice that activities that seemed difficult at first become a little easier. Are you out of breath at the top of the stairs? This is a sign you’ve challenged your cardiorespiratory system!
Muscular Strength
Strength is the maximum amount of force that can be exerted by a specific muscle or group of muscles. When you heave a large bag of groceries onto the counter, you are displaying muscular strength. Many injuries occur partly because of weakness in either the “working” muscle or its opposing muscle. Incorporating strength training in addition to cardiovascular exercise provides a total approach to fitness.
Muscular Endurance
Endurance is the ability of a muscle or group of muscles to contract repeatedly over a period of time long enough to cause fatigue. Muscular endurance is important for posture and performing everyday tasks, such as carrying objects, raking leaves, and leaning, all of which require prolonged muscular exertion.
Flexibility
Flexibility is an indication of your range of motion and an important component of physical fitness. Lack of flexibility in some areas of the body can lead to injury and back pain.
Body Composition
Body composition is simply a measure of how much of your body is lean tissue (bones, muscles, organs, and so forth), and how much is fat tissue. Although our culture seems fixated on body weight as the sole measure of success, body composition may be even more telling. For example, just because a person is at his “ideal” body weight does not automatically mean that he has a healthy level of body fat. And body fat, it seems, is not a static tissue as once believed. Researchers are discovering that our fat tissue sends all kinds of chemical messages to other cells in our bodies, so the amount of fat and that fat’s location in the body play a pivotal role in our total health profile.
There are many different ways of measuring body composition, some more accurate than others. The gold standard method involves being weighed underwater after you’ve blown all the air out of your lungs! Sounds fun, doesn’t it? Most fitness centers use much more comfortable methods—just be sure that you keep your method consistent when evaluating your progress using body composition. In other words, if you have your body fat measured with skin calipers by a fitness instructor, try to have the same instructor perform the test again six months later when you’re ready to see how far you’ve come.