Exercise & Fitness Archive

Your bone strength and size peaks by age 30. After that, bones tend to become less dense, making them more fragile and subject to breaks. Bone strength in later life depends upon your peak bone mass in youth. An active lifestyle in youth can increase maximum bone density.

Even if you're older, exercise is still a great way to protect your bones. The physical stress placed on bones during exercise stimulates the growth of new bone tissue. The type of exercise you do matters. To bolster your bones, you need to get regular weight-bearing exercise. This includes weight lifting and resistance training, as well as any type of activity that forces you to work against gravity by standing or carrying your body's weight, including running, walking, dancing, and stair climbing. Activities such as swimming or biking aren't weight-bearing and thus don't build bone. Generally, higher-impact activities (such as running) or resistance exercises (such as strength training) have a more pronounced effect on bone than lower-impact exercises, such as walking.

Activities that lengthen and stretch muscles can help you prevent injuries, back pain, and balance problems.

A well-stretched muscle more easily achieves its full range of motion. This improves athletic performance — imagine an easier, less restricted golf swing or tennis serve — and functional abilities, such as reaching, bending, or stooping during daily tasks. Stretching can also be a great way to get you moving in the morning or a way to relax after a long day. Activities such as yoga combine stretching and relaxation and also improve balance, a wonderful combination.

To get the full benefit of your workout, you need to know how hard you're exercising, and that can be different for everyone.

Q. I'm a 78-year-old athlete and dancer. Three years ago, I broke my hip. After it was repaired I completed extensive physical therapy. Since then, I've been working out at a gym using the treadmill, stationary bicycle, and rowing machine. But I still have tremendous pain in my thigh. Should I stop exercising? It helps me control my weight and blood pressure.

A. I applaud you for persisting with your exercise. You're not only keeping your weight and blood pressure down but you're also building stronger bones to help prevent fractures in the future.

Relaxation, meditation, positive thinking, and other mind-body techniques can help reduce your need for pain medication.

Drugs are very good at getting rid of pain, but they often have unpleasant, and even serious, side effects when used for a long time. If you have backache, fibromyalgia, arthritis, or other chronic pain that interferes with your daily life, you may be looking for a way to relieve discomfort that doesn't involve drugs. Some age-old techniques—including meditation and yoga—as well as newer variations may help reduce your need for pain medication.

It's well known that women fall more often than men, but why is that so? A team of Canadian researchers tackled that question by looking for factors that tend to put women at higher risk than men for spills.

The researchers studied around 15,000 adults ages 65 and older who were enrolled in the Canadian Community Health Survey–Healthy Aging. All the participants were asked if they had suffered a fall serious enough to limit their normal activity. People who answered "yes" were then queried about their lifestyles and medical histories. When the researchers analyzed the answers, they determined that stroke, arthritis, and poor nutrition increased the risk of falls in both men and women. However, different risk factors were linked to falls for women, including being 85 or older, having at least one alcoholic drink a week, taking five or more medications, and having diabetes or osteoporosis. The findings were reported online Feb. 19, 2015, by the American Journal of Epidemiology.

Q. Why do people over 60 lose height? I've lost a few inches over the years. Can this be prevented?

Easy ways to increase activity and cut down on sedentary time.

It's no secret that healthy living can reduce your risk for developing heart disease. But ever wonder how much it may help? Up to 92%, suggests a study published Jan. 6, 2015, in the Journal of the American College of Cardiology. It evaluated health habits of 70,000 young and middle-aged women during a 20-year period. The habits included not smoking; exercising for at least 2.5 hours each week; watching TV for fewer than seven hours a week; consuming a diet rich in vegetables, legumes, and whole grains but low in red meat, refined grains, and sugar; consuming no more than one alcoholic drink daily; and having a body mass index in the normal range. Compared with women who had none of those habits, women with all six reduced their risk of developing heart disease by 92%. Why do those habits provide so much protection against heart disease? "Limiting TV watching frees up time for exercise, and the other activities are known to reduce blood pressure, LDL cholesterol, and blood sugar, which reduce the three major risk factors for heart disease—hypertension, high levels of cholesterol and triglycerides, and diabetes," says Dr. Randall Zusman, a cardiologist and Harvard Medical School associate professor. And even though the study involved young and middle-aged women, Dr. Zusman reminds us that it's never too late to adopt a healthy lifestyle.

Image: Thinkstock

Q. I had a mild heart attack a few years ago but am now feeling fine. I'm planning a trip to Colorado. Is it safe for me to hike at high elevations?

A. If you're feeling well and don't have any cardiovascular symptoms, hiking in the Rocky Mountains should probably be fine, though you should check with your cardiologist first. Doctors used to advise people with cardiovascular conditions—even just high blood pressure—not to spend time at high altitudes. But there wasn't much evidence behind that recommendation. Now, there's a general consensus that ascending up to 12,000 feet should be fine for most people with heart disease. Exceptions include people with unstable cardiac disease, heart failure, or severe lung disease, such as pulmonary hypertension.