time:2009-09-27 15:07from:healther123.com writer:healther123.com hit:times
Fitness means being able to perform physical activity. It also means having the energy and strength to feel as good as possible. Getting more fit, even a little bit, can improve your health.
You don't have to be an athlete to be fit. Athletes reach a very high level of fitness. And people who take brisk half-hour walks every day reach a good level of fitness. Even people who can't do that much can work toward some level of fitness that helps them feel better and have more energy.
This topic focuses on health-related fitness, which helps you feel your best and lowers your risk for certain diseases. Making small changes in your daily lifestyle helps you improve your fitness.
Fitness helps you feel better and have more energy for work and leisure time. You'll feel more able to do things like playing with your kids, gardening, dancing, or biking. Children and teens who are fit may have more energy and better focus at school.
When you stay active and fit, you burn more calories, even when you're at rest. Being fit lets you do more physical activity. And it lets you exercise harder without as much work. It can also help manage weight.
Fitness is good for your heart, lungs, bones, and joints. And it lowers your risk for heart attack, diabetes, high blood pressure, and some cancers. It also can help you to sleep better, handle stress better, and keep your mind sharp.
To improve your health, it’s important to make physical activity part of your daily life.
One way is to get moderate activity, like brisk walking, for at least 2½ hours a week.
Or you can do vigorous exercise, like running, for at least 1¼ hours a week. This activity makes you breathe harder and have a much faster heartbeat than at rest.
Experts recommend that teens and children (starting at age 6) do moderate to vigorous activity at least 1 hour every day.
To find your target heart rate for exercise, use the Interactive Tool: What Is Your Target Heart Rate?
Here’s how you can tell if an activity or exercise is making you work hard enough. If you can't talk while you do it, you're working too hard. You're at the right level if you can talk but not sing during the activity.
The activities you choose depend on which kind of fitness you want to improve. There are three different kinds of fitness:
You may be in better shape in one kind of fitness than another. For example, you might be flexible but have poor muscle strength. It’s best to work on all three kinds of fitness.
If you're ready to add more physical activity to your life, here are some tips to get you started:
Health Tools help you make wise health decisions or take action to improve your health.
| Actionsets are designed to help people take an active role in managing a health condition. | |
| Fitness: Adding more activity to your life | |
| Fitness: Choosing activities that are right for you | |
| Fitness: Increasing core stability | |
| Fitness: Staying active | |
| Fitness: Staying active when you have young children | |
| Fitness: Using a pedometer or step counter | |
| Fitness: Walking for wellness | |
| Stress management: Managing your time | |
| Interactive tools are designed to help people determine health risks, ideal weight, target heart rate, and more. | |
| Interactive Tool: How Many Calories Did You Burn? | |
| Interactive Tool: Is Your Weight Increasing Your Health Risks? | |
| Interactive Tool: What Is Your Target Heart Rate? | |
The overall benefit of being active and fit is an improved quality of life—being able to do things you enjoy for longer periods of time (for example, playing with the kids, gardening, dancing, or walking).
Research repeatedly shows that fitness is a strong measure of health. In a study of more than 25,000 volunteers, researchers at the Cooper Institute found that a person's fitness level was more important than body weight. Men in the study who were overweight or obese but who were physically fit had a lower risk of death than men who were a healthy weight but were not physically fit.1
Being fit improves your overall health and reduces your risk of disease.
Short-term benefits include:2
No matter what your size or shape, physical activity has important health benefits. These may include:
Long-term benefits include reduced risk of:2, 5
Note: Moderate exercise is safe for most people, but it's always a good idea to talk to your doctor before starting an exercise program. If you are at risk for or have coronary artery disease, high blood pressure, diabetes, or other chronic conditions, your doctor may want to help you build a plan matched to your needs. He or she may want to do tests before you start a plan or want you to be more careful and watch for injuries or other problems.
Flexibility is the ability to move joints and muscles through their full range of motion. As you become more flexible, you will find it easier to reach things on high shelves, to look under a bed, or perhaps to tie your shoes. You will also have a better sense of balance and coordination.
To stay flexible, stretch all your major groups of muscles. These include the muscles of your arms, back, hips, front and back of your thighs, and calves. Try to stretch for 10 to 12 minutes a day, after a brief warm-up. Do some stretches first thing in the morning, take a stretch break instead of a coffee break, or stretch in the office for a few minutes. Or participate in activities that include stretching, such as dance, martial arts (aikido or karate), tai chi, or yoga.
Stretching also can be done as part of strength training and aerobic exercise. When you exercise, you repeatedly shorten your muscles. To counter this effect, you need to stretch slowly and regularly, which makes you more flexible. Combining it with other forms of fitness is an ideal way to practice flexibility fitness.
When getting started with flexibility and stretching, begin slowly and increase your efforts gradually. You can measure your progress with flexibility by noticing how much farther you can do each stretch. Can you go farther with each stretch than you could when you started? If so, your flexibility is improving.
Aerobic fitness increases the amount of oxygen that is delivered to your muscles, which allows them to work longer. Any activity that raises your heart rate and keeps it up for an extended period of time will improve your aerobic fitness.
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As you increase your aerobic fitness, you will notice that you can do more physical activity without becoming out of breath or feeling like your heart is pounding. You will be able to do activities such as playing with children, housework, yard work, or hiking without becoming exhausted as quickly. Many forms of aerobic exercise will also strengthen your muscles and increase your flexibility.
One of the best and easiest aerobic activities is walking. You don't need special equipment, and it can be done almost anywhere. To get aerobic benefit, you must walk briskly—fast enough to increase your heart rate (pulse) and breathing, but not so fast that you can't talk comfortably.
Increasing your activity
A pedometer, which you can buy at a sporting goods store, can help you keep track of your activity. A pedometer will count the number of steps you take each day and help you set goals to walk more. Some people prefer letting the pedometer count the steps they walk, rather than trying to keep track of how many minutes they walk. For more information, see:
A good goal is to walk a total of 10,000 steps per day. Try wearing your pedometer every day for 1 week to see your usual number of steps. Then increase the number by up to 2,000 steps per day until 10,000 steps is comfortable for you. You can increase your walking in simple ways. These suggestions can get you started, and you can probably think of additional ways. For more information, see:
You can add more steps to your everyday activities by:
To keep exercise interesting, find a new area to walk in. Allow yourself some extra time in case this walk takes longer than your usual route. Because new areas may pose some safety concerns, try a new area only during daylight, and choose well-populated areas, such as:
Walk at various times of day. Use "transition times" (times between activities when you don't have to be anywhere) to get out and walk, such as:
Other aerobic activities include:
To find out how many calories are burned during various activities, use this Interactive Tool: How Many Calories Did You Burn?
How often and how long?
Adults
Experts say to do either of these:7
You can choose to do one or both types of activity. And it's fine to be active in several blocks of 10 minutes or more throughout your day and week. Do what works best for you. For example, you could do moderate activity twice a week for at least 1 hour and 15 minutes at a time. Or you could do 10 minutes 3 times a day, at least 5 days a week.
You could do vigorous activity 15 minutes a day, at least 5 days a week. Or you can try to do it once a week for 1¼ hours, or for 25 minutes a day, 3 days a week.
Moderate exercise is safe for most people, but it's always a good idea to talk to your doctor before starting an exercise program.
Start by doing a short warm-up, such as walking or riding a stationary bike. And stretch briefly.
Children
Experts recommend that teens and children (starting at age 6) do moderate to vigorous activity at least 1 hour every day.7 And 3 or more days a week, what they choose to do should:
It’s okay for them to be active in smaller blocks of time that add up to 1 hour or more each day.
How hard do I have to work?
To achieve health benefits, you need to exercise at a moderate pace. This means you need to increase your heart rate to the point where it is 50% to 70% of its maximum or at a pace that feels somewhat difficult. An easy way to monitor this is to note how hard you are breathing:
You can also use your target heart rate range to know if you are exercising at a moderate pace. Use this Interactive Tool: What Is Your Target Heart Rate?
As you continue to exercise aerobically, your heart rate will not rise as high as it did before with the same amount of effort. This is a sign that you are becoming more fit.
Muscle fitness can mean you have muscles that can lift heavier objects (strength) or muscles that will work longer before becoming exhausted (endurance). As you increase your muscle fitness, you will notice that you can carry heavy grocery bags more easily, pick up children without feeling as much strain, or carry heavy items longer before becoming too tired to continue. Having stronger muscles also protects your joints.
One part of muscle fitness is strengthening the muscles of your trunk. This strengthening is called core stabilization. It can help you have better posture and balance, and help protect you from injury.
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Muscles become stronger through a 3-step process:
When you exercise against resistance, you stress your muscles slightly but not to the point of serious damage or injury. When you rest, your body rebuilds the muscles and the connective tissues between them (joints, tendons, and ligaments) in a way that prepares them for the next time they will be stressed. When you stress the same muscles again, the process is repeated, and the muscles gradually become stronger.
A resistance-training program to increase muscle fitness can include:
Experts advise people to do exercises to strengthen muscles at least two times each week.8 Examples include weight training or stair climbing on two or more days that are not in a row. For best results, use a resistance (weight) that gives you muscle fatigue after 8 to 12 repetitions of each exercise.
Swimming, cycling, rowing, and skiing are activities that improve both muscle strength and aerobic fitness.
When you begin your muscle-conditioning activity, try to take 5 to 10 minutes to walk, jog in place, or do other activities to warm up, and do some stretches. Learn and pay attention to the proper form for all exercises.
As you build muscle strength and endurance, you will notice that you can do more and more of each exercise. Some people will see a change in the way their muscles look, but others will not see a change for a long while. A more important sign of progress is how many repetitions and sets of an exercise you can do, or how much easier it feels to do them. This means your muscle fitness has improved.
It's always a good idea to talk to your doctor before starting a resistance-lifting program, especially if you have high blood pressure, heart disease, or joint problems.
Before increasing your activity, evaluate where you are now. Ask yourself the following questions:
Pick an activity and prepare for it. The following points will help you do this.
To find out how many calories are burned during various activities, use this Interactive Tool: How Many Calories Did You Burn?
Remember that it is best to achieve fitness in all three areas—flexibility, aerobic fitness, and muscle strength and endurance. As you meet your goals for one area, think about beginning or expanding your fitness program for another area. It is useful and easy to make flexibility part of your aerobic and muscle-strengthening routine.
Goals help provide the motivation you need to start and continue regular physical activity.
People often cite problems with motivation as the main reason they aren't more active. Following are suggestions that may help:
As you become more active, be aware of:
When you have determined that you want to become fit, you will want to establish a fitness routine. Although most people think of classes and specific activities (such as jogging or tennis) as the way to fitness, there are many ways you can work physical activity into your life.
Structured fitness
Fitness classes or groups provide a consistent approach to an activity. Local gyms, schools, and churches may sponsor a regular fitness group. Teams also provide a consistent approach to fitness but are more competitive. Many communities have physical activity programs to help adults and children get fit. They often are found within social agencies and schools.
Structured fitness has the advantage of:
Self-directed fitness
Many people find an activity they enjoy and create their own fitness program. For it to be effective, you must set up a regular schedule and stick to it. Self-directed fitness gives you:
Fitness within your day
You can use "everyday" activities for fitness, as long as you do them regularly. This includes:
Children and older adults
Children and older adults can also benefit from being fit.
Many of the benefits of being physically active, such as more energy and improved mood, occur soon after you become more active. But some of the most important health benefits have to do with being active over many years. Also, if you stop being active, you lose the fitness you achieved. Being consistent makes the most sense for your health.
To help make physical activity a long-term commitment:
Physical activity is good for your health, but it can stress and strain your body if not done right. If it's done too suddenly or without basic precautions, exercise can lead to injury or illness.
Even if you have long been active and are fit, keep safety in mind. Do not assume that basic precautions do not apply to you.
The most important ways to avoid injury and illness are to:
Some injuries and illnesses related to physical activity include the following:
| America on the Move: University of Colorado | |
| 4200 East 9th Avenue | |
| Suite C263 | |
| Denver, CO 80262 | |
| Phone: | 1-800-807-0077 |
| Web Address: | www.americaonthemove.org |
America On the Move offers free, personalized online resources, interactive tools, community support, and events. This program helps you build eating and activity habits that positively affect your weight and health. Its guidelines include walking an additional 2,000 steps each day and decreasing daily caloric intake by 100 calories. | |
| American Heart Association (AHA) | |
| 7272 Greenville Avenue | |
| Dallas, TX 75231 | |
| Phone: | 1-800-AHA-USA1 (1-800-242-8721) |
| Web Address: | www.americanheart.org |
Call the American Heart Association (AHA) to find your nearest local or state AHA group. AHA can provide brochures and information about support groups and community programs, including Mended Hearts, a nationwide organization whose members visit people with heart problems and provide information and support. AHA's Web site also has information on physical activity, diet, and various heart-related conditions. | |
| Centers for Disease Control and Prevention (CDC): Physical Activity Topics | |
| 1600 Clifton Road | |
| Atlanta, GA 30333 | |
| Phone: | 1-800-CDC-INFO (1-800-232-4636) (404) 639-3311 |
| TDD: | 1-888-232-6348 |
| Web Address: | www.cdc.gov/nccdphp/dnpa/physical/index.htm |
This Web site has information about physical activity for all ages, including expert guidelines, overcoming barriers to getting and staying active, health benefits, and more. | |
| National Health Information Center: HealthierUS.gov | |
| P.O. Box 1133 | |
| Washington, DC 20013-1133 | |
| Phone: | 1-800-336-4797 (301) 565-4167 |
| E-mail: | info@nhic.org |
| Web Address: | www.healthierus.gov |
HealthierUS.gov provides information on physical activity, diet, disease prevention, and making healthy choices. | |
| President's Council on Physical Fitness and Sports | |
| 200 Independence Avenue SW, Department W | |
| Suite 738-H | |
| Washington, DC 20201-0004 | |
| Phone: | (202) 690-9000 |
| Fax: | (202) 690-5211 |
| E-mail: | fitness@hhs.gov |
| Web Address: | www.fitness.gov |
This Web site has physical activity ideas and tips for all ages. The President's Challenge interactive Web site lets you record your daily activity and track your progress. You can also receive an award when you reach your goal. | |
| Shape Up America! | |
| P.O. Box 15009 Native Dancer Road | |
| North Potomac, MD 20878 | |
| Phone: | (240) 715-3900 |
| E-mail: | info@shapeup.org |
| Web Address: | www.shapeup.org |
Shape Up America! is a national coalition of industry and medical experts in nutrition and fitness. Its goals are to make Americans more aware of the importance of maintaining a healthy weight and to provide information about how to lose weight and stay fit. The organization has published several booklets on weight loss and diet, which can be ordered from the Web site. | |
Citations
Barlow CE, et al. (1995). Physical fitness, mortality, and obesity. International Journal of Obesity and Related Metabolic Disorders, 19(Suppl 4): S41–S44.
U.S. Department of Health and Human Services (2002). Physical activity fundamental to preventing disease. Available online: http://www.aspe.hhs.gov/health/reports/physicalactivity.
Centers for Disease Control and Prevention (2004). Strength training among adults aged 65 or older. MMWR, 53(2): 25–28.
Buchner DM (2008). Physical activity. In L Goldman, D Ausiello, eds., Cecil Medicine, 23rd ed., pp. 64–67. Philadelphia: Saunders Elsevier.
Chakravarthy MV, et al. (2002). An obligation for primary care physicians to prescribe physical activity to sedentary patients to reduce the risk of chronic health conditions. Mayo Clinic Proceedings, 77(2): 165–173.
Simon HB (2003). Diet and exercise. In DC Dale, DD Federman, eds., Scientific American Medicine, Clinical Essentials, chap. 4. New York: WebMD.
U.S. Department of Health and Human Services (2008). 2008 Physical Activity Guidelines for Americans (ODPHP Publication No. U0036). Washington, DC: U.S. Government Printing Office. Available online: http://www.health.gov/paguidelines/pdf/paguide.pdf.
Haskell WL, et al. (2007). Physical activity and public health: Updated recommendation for adults from the American College of Sports Medicine and the American Heart Association. Circulation, 116(9): 1081–1093.
Almond CSD, et al. (2005). Hyponatremia among runners in the Boston Marathon. New England Journal of Medicine, 352(15): 1550–1556.
Other Works Consulted
American Academy of Pediatrics (2008). Bright Futures: Guidelines for Health Supervision of Infants, Children, and Adolescents, 3rd ed. Elk Grove Village, IL: American Academy of Pediatrics.
Anspaugh DJ, et al. (2006). Increasing cardiorespiratory endurance. In Wellness: Concepts and Applications, 6th ed., pp. 69–90. Boston: McGraw-Hill.
Kavey RW, et al. (2003). American Heart Association guidelines for primary prevention of atherosclerotic cardiovascular disease beginning in childhood. Circulation, 107(11): 1562–1566.
National Institute on Aging (2004). Exercise: A Guide From the National Institute on Aging. Available online: http://www.nia.nih.gov/HealthInformation/Publications/ExerciseGuide.
Strong WB, et al. (2005). Evidence based physical activity for school-age youth. Journal of Pediatrics, 146(6): 732–737.
Williams MA, et al. (2007). Resistance exercise in individuals with and without cardiovascular disease: 2007 update: A scientific statement from the American Heart Association Council on Clinical Cardiology and Council on Nutrition, Physical Activity, and Metabolism. Circulation, 116(5): 572–584.
| Author | Debby Golonka, MPH |
| Editor | Susan Van Houten, RN, BSN, MBA |
| Associate Editor | Pat Truman, MATC |
| Primary Medical Reviewer | Kathleen Romito, MD - Family Medicine |
| Specialist Medical Reviewer | Heather Chambliss, PhD - Exercise Science/Weight Management |
| Last Updated | August 26, 2008 |