Exercise & Fitness Archive

Whether you walk or run, participating in a local 5K race can be a good way to enhance your heart health and community spirit.

If you're looking for inspiration to get in shape and strengthen your heart, you might think about doing a couch-to-5K program. These free or low-cost coaching plans (available online or as apps or podcasts) are designed to help would-be runners train for a 5-kilometer race, which is about 3.1 miles. They typically feature timed walking and running intervals that gradually phase out the walking over a period of about nine weeks.

"The purpose of a couch-to-5K program is to give you time to acclimate and start to enjoy the benefits of running and the sense of accomplishment of completing a distance safely," says Dr. Adam Tenforde, director of the Running Medicine Program at the Harvard-affiliated Spaulding Rehabilitation Network. Running provides many cardiovascular benefits as well as an enhanced sense of well-being, he adds.

Here is why squats may be the most important exercise you do.

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More than half of an average person's day is spent sitting — from watching television to working at a computer — and that time tends to increase as you age and become less active.

All that sitting can have a profound impact on one's health, too. In fact, a study in the Oct. 3, 2017, Annals of Internal Medicine, involving almost 8,000 adults ages 45 and older, found a direct relationship between time spent sitting and a higher risk of early death.

In the journals

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For the first time in 10 years, the U.S. government has updated its guidelines for regular physical activity. The guidelines, published in the Nov. 20, 2018, issue of JAMA, still suggest adults get at least 150 to 300 minutes each week of moderate-intensity physical activity, and the more you can do, the better. Examples of moderate-intensity activities include brisk walking, swimming and cycling.

What is new are specific suggestions for certain age groups. For adults ages 65 and older, the report recommends their allotted minutes include multicomponent activities that offer balance training, aerobic exercise, and muscle strengthening, all of which can help older adults reduce their risk of falls. They noted that many recreational activities like dancing, yoga, tai chi, gardening, or sports often incorporate the multiple types of activity you need.

Ask the doctors

Q. My partner recently had a heart attack. The doctor recommended exercise, but I wonder if it's better to take it easy. I feel like exercise might be dangerous or even cause another heart attack. Is exercising too risky?

A. As counterintuitive as it might seem, exercise is good medicine for heart attack survivors. Provided the doctor gives the green light, about two-and-a-half hours of moderate-intensity exercise each week can be beneficial — this is the amount recommended by the American Heart Association. Exercise can start as soon as the doctor gives the okay.

Including stretching exercises in your workout regimen is essential to maintaining good posture and balance.

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Whether you're an avid exerciser or spend most of your time sitting in front of a computer, stretching should be part of your weekly routine. While this may conjure images of complicated twists and contortions, the type of stretching you need may be as simple as taking periodic work breaks to lift your arms above your head and to perform some other easy movements.

"Stretching doesn't have to be a particular program. It's just getting out of the posture you spend a lot of time in, taking some deep breaths, and moving your joints through their full range," says Dr. Lauren Elson, an instructor in physical medicine and rehabilitation at Harvard Medical School.

News briefs

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You probably know that exercise can help you maintain your balance and prevent falls, which are among the top causes of injury and death among older adults. But if you're worried that being active will wind up increasing your risk of getting hurt, a large study may put your fears to rest. The research, published online Dec. 28, 2018, by JAMA Internal Medicine, analyzed 40 randomized trials that included about 22,000 older adults. People who exercised for one year or more had a 12% relative reduction in falls and a 26% relative reduction in falls with injury, compared with people who didn't exercise. Also: exercising long-term was not associated with an increase in the rate of hospitalization or death (though it wasn't linked to a reduction, either). Researchers didn't determine which kind of exercise was best. However, the most benefits were seen when people exercised three times per week, 50 minutes per session, in programs that included several components, such as balance exercises, strength training for the lower limbs, and aerobic exercise (the kind that gets your heart and lungs pumping, like brisk walking).

Do you sometimes feel like the Energizer Bunny when his battery runs low? You might start the day strong, but by midafternoon, you can't quite keep going and going.

Fatigue afflicts everyone at one time or another. Assuming your doctor has ruled out serious medical causes, there are a few basic steps you can take to "recharge your batteries."

Sticking with exercise isn't always easy, but setting goals and having a plan for when your motivation lags can help. If you're spending more time finding excuses than doing those planks and bridges, try taking a look at the list below for some inspiration.

Doing core exercises regularly will

• keep your back strong and flexible, which will help you avoid low back pain
• ease back pain or stiffness so you can move, sit, and sleep comfortably
• enhance your balance and stability, which will help prevent falls and make walking and other activities easier
• reclaim the strength and flexibility you need for everyday movements like bending, turning, and lifting
• build up the strength and flexibility you need for on-the-job tasks like lifting heavy items, twisting, or standing or sitting at a desk for hours
• add power to activities you enjoy, like tennis, running, golf, kayaking, gardening — or any other active pursuit
• improve your posture, which can trim your figure visually and help prevent back injuries
• help tone your waistline
• spice up your regular workouts by adding variation.

For more ways to keep your core muscles strong and working for you, read Gentle Core Exercises, a Special Health Report from Harvard Medical School.

On call

Q. Do men have to worry about bone health, and if so, what are the best exercises to keep my bones strong?

A. Most men have the advantage of continuing to produce bone-protecting testosterone throughout life. But the level of the male hormone declines with age and therefore may not be sufficient to keep bones strong as a man hits his later years.

In the journals

It's well established that aerobic exercise improves health, but a new study suggests that better cardio fitness leads to a longer life, and that the benefit may help older adults the most. The results were published online Oct. 19, 2018, by JAMA Network Open.

In the study, more than 120,000 people (59% of them men) underwent exercise treadmill testing periodically over 14 years. The researchers found that increased cardio fitness levels were directly associated with longer lives, and that people with the highest aerobic fitness levels lived the longest, especially among those over age 70.