National Insitute on Aging
You are never too old to get in shape. I am often asked what I’ve done over the years to stay in shape. At different times, I have engaged in many different activities. When I was in school I played football and basketball. The Marine Corps provided its own unique brand of physical training or PT. While in the space program and for many years afterwards, I jogged to stay in shape. And my wife Annie and I have enjoyed hiking and skiing over the years. Most of all, I have always valued staying active in one way or another.
From my involvement with NASA, both in the Mercury program and with the Shuttle Mission STS-95, I have become keenly aware of the effect that weightlessness can have on the human body. Without the effect of gravity, astronauts’ muscles and bones begin to deteriorate while they’re in space. A number of other changes occur to the astronauts in orbit — from which they recover upon their return — that also happen as part of the natural aging process right here on Earth. For one, osteoporosis sets in. These same things can happen to us if we maintain a sedentary lifestyle. This is especially true as we get older.
The good news is that exercise is just a step away. I am pleased to recommend Exercise: A Guide from the National Institute on Aging as an excellent manual for anyone who wants to take those first steps toward an active lifestyle. The scientists and doctors at the National Institute on Aging at the National Institutes of Health collaborated to produce this top-notch book. This guide contains valuable information about how exercise and proper nutrition are crucial for staying healthy as we age and provides useful tips on establishing and maintaining a regular exercise program.
In my case, I had to make accommodations to my advancing years by modifying my exercise regime. In the past, I was an ardent jogger, but as I got older my doctor said that the impact of running was putting too much stress on my knees and other joints. He suggested that I take up speed walking instead. Along with that, I do some weight lifting and stretching. So now I still get a great workout, but by doing exercise that is appropriate for my age and physical condition. This guide will help you do the same.
I hope you will read this book and follow its suggestions. We can all enjoy healthy and productive senior years by heeding these recommendations.
Senator John Glenn
Welcome to one of the healthiest things you can do for yourself. Exercise! Regular exercise and physical activity are very important to the health and abilities of older people. In fact, studies suggest that not exercising is risky behavior. That is why we wrote this book. We are the National Institute on Aging, part of the National Institutes of Health, and our research is aimed at improving the health of older people.
For the most part, when older people lose their ability to do things on their own, it doesn’t happen just because they have aged. More likely, it is because they have become inactive. Older inactive adults lose ground in four areas that are important for staying healthy and independent: endurance, strength, balance, and flexibility.
Fortunately, research suggests that you can maintain or at least partly restore these four areas through exercise — or through everyday physical activities (walking briskly or gardening, for example) that accomplish some of the same goals as exercise. What may seem like very small changes resulting from exercise and physical activity can have a big impact.
Getting Past The Barriers
You may be reluctant to start exercising, even though you’ve heard that it’s one of the healthiest things you can do. You may be afraid that physical activity will harm you; or you might think you have to join a gym or buy expensive equipment in order to exercise. Or, you may feel embarrassed to exercise because you think it’s for younger people or for people who look great in gym clothes. You may think exercise is only for people who are able to do things like jogging.
In fact, just about every older adult can safely do some form of physical activity at little or no cost. And you don’t have to exercise in a public place or use expensive equipment, if you don’t want to.
Even household chores can improve your health. The key is to increase your physical activity, by exercising and by using your own muscle power.
Who Can Exercise?
Studies show that, in the long term, older adults in all age groups hurt their health far more by not exercising than by exercising. As a rule, older people should stay as physically active as they can.
Chapter 2 of this book explains that there are certain situations in which you should check with your doctor before starting to exercise. You will also find out about a couple of conditions that prohibit exercise. More than likely, though, reading Chapter 2 will reassure you, but if you still have any doubts about exercise, talk to your doctor before you start.
About This Book
The first three chapters of this book explain what exercise and physical activity can do for you, how to exercise safely, and how to stay motivated to exercise. If you already know the material in Chapters 1 and 2 – for example, if your doctor already has talked to you about the benefits of exercise and has advised you how to exercise safely – skip to the summary at the end of each chapter to make sure that you aren’t missing any important information, then go to Chapter 3, which discusses motivation.
Chapter 4 is a “how-to” chapter. It shows how to exercise to improve or maintain endurance, strength, balance, and flexibility. You certainly aren’t restricted to these exercises. We show you these examples to help you get started.
Chapter 5 also is a “how-to” chapter. It gives examples of ways you can check your progress. The last chapter is about nutrition. Each chapter summary lists important points to remember.
At the end of the book, you will find resources to contact for more information about exercise and special programs for older exercisers. Some of the resources are for people with diseases or disabilities. You will also find charts to record your progress and a form you can fill out and send to us after you have been exercising for at least a month. We will send you a National Institute on Aging certificate that acknowledges your commitment to improving your health through exercise.
A Word About Words
Terms used to discuss exercise can be confusing. We want to explain a few key words used in this book.
You probably have heard the term “aerobics” or “aerobic exercises.” We call them “endurance exercises” or “endurance activities.” These activities increase your heart rate and breathing for an extended period of time.
The term “cardiovascular” refers to your heart and circulatory systems.
The word “frailty” has more than one meaning. We use it here to mean the physical condition that results, in part, from severe muscle loss — the kind of muscle loss seen in people who have been inactive for many years. Frail people have severe loss of strength and often cannot perform everyday tasks.
We frequently use the word “independence”; in this book, it means older adults’ ability to live and do things on their own. Being independent doesn’t necessarily mean doing things alone; it means being able to do for yourself, in your everyday tasks and your leisure activities, to the greatest extent possible.
Exercises that build muscle have a variety of names, including “strength-training,” “resistance-training,” “weight-training,” or “weight-lifting.” In this book, we call them “muscle-building” or “strength” exercises.
What is considered a physical activity and what is considered an exercise? A physical activity is any voluntary body movement that burns calories. Exercise is physical activity that follows a planned format. It’s done with repeated movements, with the goal of improving or keeping up one or more specific areas of physical fitness.