Exercise & Fitness Archive

A study of over 60,000 people who were followed for as long as two decades found that people’s perceptions about their level of activity have a more significant effect on their longevity than their actual fitness.

Physical therapy may be an effective alternative to surgery in relieving joint and back pain.

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Exercising may be the last thing you want to do when you have a sore knee or aching back, but it might be the first thing you should do. Physical therapy has long been recommended following surgery. But for some, trying physical therapy before opting for surgery may be the better choice.

"You may be able to spare yourself the expense, pain, and recovery time of surgery," says physical therapist Karen Weber, clinical supervisor at Harvard-affiliated Spaulding Rehabilitation Outpatient Centers in Braintree and Quincy, Mass.

Are you exercising enough to prevent heart disease?

It can help you lose weight; decrease your blood pressure, cholesterol, and blood sugar; and reduce your stress. But wait, there's more: it also lowers your odds of a heart attack or other cardiovascular event and may even extend your life.

This wonder drug isn't a drug at all, of course — it's exercise. Yet only about half of all American adults do enough physical activity to benefit their health. And exercise is especially vital for people who are at risk for heart disease or already have it.

Research we're watching

About 8.5 million Americans have peripheral artery disease, or PAD, in which fatty plaque clogs arteries outside of the heart, most commonly in the legs. The hallmark symptom is calf or thigh pain while walking that goes away when you rest.

The safest, most effective treatment for PAD is supervised exercise training, in which you're monitored while walking on a treadmill. Few people participate, however, partly because of the expense of the regimen. It involves up to 36 sessions of 30 to 60 minutes each over a period of three months.

Studies have linked long periods of sitting with an increase in heart disease and early death.

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Odds are you are sitting while you read this. In fact, more than half of an average person's waking hours are spent sitting, according to a study in the Jan. 19, 2015, Annals of Internal Medicine.

All that sitting can cause great damage to your health. "The health risks tied to sitting may not be completely related to the act of sitting itself, but rather that sitting keeps you from doing healthier activity," says Dr. I-Min Lee of Harvard's T.H. Chan School of Public Health.

Research we're watching

While obesity presents a number of health risks for older adults, weight loss is often accompanied by a reduction in muscle tissue and loss of strength. A team led by researchers at Baylor College of Medicine set out to determine whether more exercise or specific types of exercise would help preserve muscle during weight loss.

The researchers randomly assigned 103 obese women and 57 obese men over age 65 to one of four groups. Three groups participated in a reduced-calorie diet plus one of three exercise programs — aerobic training, resistance training, or combined aerobic and resistance training — while the fourth, a control group, only received information on healthful eating.

A small study supports the idea that exercising improves body image, whether or not the activity leads to any visible change in appearance. This suggests that additional research examining different types of exercise, and the long-term psychological effects of physical activity would be valuable.

When it comes to heart health, there's a lot to love about racket sports.

If you haven't lobbed a tennis ball over a net since high school, you might want to pick up a racket again. A recent study suggests that people who play racket sports regularly may slash their odds of dying from a heart attack or stroke.

Tennis, which ranks among the world's most popular sports, provides an excellent full-body workout, plus a few other less obvious benefits. And lower-impact racket sports, such as badminton or table tennis, may be good choices for people who have certain health conditions or who are older (see "Ping-Pong, perhaps?").

In the journals

A study published online March 14, 2017, by The Journal of the American Medical Association suggests that when it comes to speed of recovery after a total knee replacement, a home-based rehabilitation program is as good as rehab that starts with a stay in the hospital.

Researchers randomly assigned people with osteoarthritis undergoing total knee replacement into two groups for 10 weeks of therapy. Those in one group received 10 days of hospital inpatient rehabilitation followed by a clinician-monitored program that they attended two to three times a week for eight weeks. Those in the other group skipped the hospital rehab and went straight into the clinician-monitored program but then progressed to at-home exercises.

Building strength and power is key to healthy aging, both physically and mentally. It may be easier than you think.

We probably don't need to remind you that your body changes with age. Age-related muscle loss begins at around age 35 and progresses slowly — at about 1% per year. But after about age 60, muscle loses mass more rapidly, so that adults who don't do regular strength training may lose 4 to 6 pounds of muscle per decade. Moreover, the lost muscle is usually replaced by fat.

Studies show that strength training not only can slow muscle loss, it can also help prevent or control conditions as varied as heart disease, diabetes, arthritis, and osteoporosis. And recent research indicates that it can also improve cognitive function, especially when added to aerobic exercise. As we age, strength training helps to preserve mobility and reduce the risk of falling. "What has been shown is that if you're looking at mobility problems, the most beneficial exercises that are those that focus on progressive training for strength and power," says Dr. Jonathan Bean, an associate professor of physical medicine and rehabilitation at Harvard Medical School.