The Ultimate Guide to Strength Training Over 50

As you head into the Golden Years, the idea of lifting weights might seem silly or intimidating.

But regular strength training is linked to important health benefits for people of ​all​ ages, including increased muscle mass, stronger bones, joint flexibility, weight management and balance (experts agree that balance is particularly important for aging folks), according to the American Cancer Society.

In fact, the physical activity guidelines for Americans from the U.S. Department of Health and Human Services recommend that adults strength train at least twice a week.

But you don't have to be the Hulk to head to the weight room. Lifting light weights or using your own body weight (think: push-ups) can improve strength, bone density and balance, says Nancy McCarthy, an ACE-certified personal trainer, who works with older adults.

Strength training is especially important for older folks because it can help counteract the loss of muscle mass, aka sarcopenia, and decreased bone density associated with aging, explains Keri Strand, a certified personal trainer and doctoral student at the University of Miami.

"As you age, you lose a lot of muscle mass and strength, which translates to a loss of function if you don't do anything about it," Strand tells LIVESTRONG.com. "For the aging person, it's more important than anybody to try to maintain that strength and power and muscle mass for as long as possible."

You can lose as much as 3 to 5 percent of muscle mass per decade after the age of 30, according to Harvard Health Publishing. Plus, a June 2014 review in ​Current Opinion in Rheumatology​ shows that older adults tend to lose the amount of fast-twitch, or type II, muscle fibers they have.

FYI, you have two main types of muscle fibers: slow-twitch (type I) and fast-twitch muscle (type II) fibers, per the American Council on Exercise (ACE). Type I muscle fibers are activated during sustained aerobic activity, such as walking and running, as well as resistance training with light weights, but type II muscle fibers are used during more explosive, plyometric movements, such as sprints, box jumps and heavy lifts.

"Most of the danger of losing the type II muscle fibers is mass because that's what's needed for explosive movements, such as getting up out of a chair, which is a powerful move," McCarthy says.

That's why targeting your type II muscle fibers is especially important with age, and it begins with following a specific strength-training routine that works these muscle fibers so you don't lose them.

Before you jump into a new workout plan, McCarthy says it's important to speak with your doctor to discuss any underlying conditions that might cause a problem, including high blood pressure and osteoporosis.

Whether you're new to exercise or followed a strength-training routine in your earlier years, McCarthy recommends working with a personal trainer to avoid doing too much too soon and to learn proper form, especially for older adults who might be at greater risk for injury.

A trainer, she says, can help with repositioning, adjusting the amount of resistance and providing exercise modifications. If you aren't comfortable doing a certain exercise, McCarthy says you should voice it to your trainer because it will help them gauge which modifications would work best for you. It will also inform them of how past injuries might have affected your form and mobility.

"We need to listen to our own bodies," says McCarthy, who's in her 70s. "No matter what experts are saying, if something doesn't feel right, it might not be. [Building strength] doesn't happen overnight. It takes some commitment, but it's worth it."

She says trainers will start where their clients are today — not 30 years ago. Someone who has been physically active for years, however, will progress more quickly than someone who is just starting out.

For example, an older adult who has been active might be able to walk a long distance without feeling aches or pains afterward, whereas someone who is just starting an exercise program might walk slowly for a short period of time and still be sore. "It's the same for strength training," she says.

The intensity of the workout depends on several factors, including experience, injuries and personal goals. But it's best, experts agree, to start with low weights and work your way up.

Generally speaking, strength training is a physical activity designed to, well, make you stronger. There are different ways to build strength, including exercises using your body weight, dumbbells, kettlebells and barbells.

Experts recommend older adults, especially if previously sedentary, start with body-weight exercises. This will help develop good form and a strong fitness base, which can help prevent injury, McCarthy says. Then, you can move to light dumbbells, resistance bands and strength-training machines.

"Almost all exercises can be done with resistance bands in place of machines," McCarthy says. "I mix up my clients' sitting and standing exercises — they think they're getting a little break when I have them sit."

In order to reap the benefits of strength training, experts recommend two to three sessions per week. Strand says it's important to break up workouts into upper body and lower body, or into push exercises, where you're pushing weights away from you, such as a chest press, and pull exercises, where you're pulling weight toward you, such as a biceps curl to avoid overtaxing your muscles.

She also says older adults should generally have two rest days between workouts. "Older individuals need longer recovery time than younger individuals," she says, noting that exactly how much time off a person needs will vary.

"There are certain exercises that can be done every day, such as core work, but if someone is experiencing soreness, I recommend at least one day, preferably two or three, before the next workout."

If you're not experiencing any soreness, you might be able to do pull exercises one day, for example, and push exercises the next. It's important to vary the type of workouts you do throughout the week, too. "I highly recommend doing cardio, yoga, relaxation and stretching on days you're not strength training," McCarthy says.

Some people, she adds, might benefit from a day without any physical activity.

This varies, McCarthy says, especially for those new to the exercise. "Start with 20 minutes and then work up to longer sessions," she says, suggesting 30, 45 and 60 minutes as people build their strength.

Exercise stations are a good way to make the most of your time, McCarthy says. These stations are groups of exercises that hit major muscle groups, and you would alternate between harder exercises and easier ones.

"Multi-joint or complex exercises are a good way to maximize time, too," she says. For example, you could hold dumbbells while performing a squat and then move into a biceps curl and then into a shoulder press.

Or, she says, you can try light cardio exercise, like walking, in between strength-training sets. Older adults should also focus on the ​quality​ of their reps versus the quantity.

"Bad form is never a good thing, ever," she says. "If your muscle is failing at 6 reps instead of the planned 12, you're done with that exercise until you rest."

Joseph Signorile, PhD, a professor in the department of kinesiology and sports sciences also from the University of Miami, recommends starting around 30 percent of the maximum weight you can lift and working up to about 75 to 85 percent. While there are many ways to determine that maximum weight, McCarthy says a good rule of thumb is if you can't complete 4 reps at a particular weight, it's too heavy. Conversely, she says, if you're going strong after 15 reps, that weight is too light.

A good way to measure intensity is to build up to a weight that allows you to complete 6 to 12 repetitions without losing proper form, she says. And she prefers that her clients move up in weight instead of adding repetitions.

"It's a great confidence booster when someone realizes they can lift 8 pounds and often do almost as many reps as they did with 5 pounds," she says.

But if the weight increase is too much — after all, equipment doesn't usually make it possible to add one pound at a time — McCarthy recommends adding reps until you're able to complete 6 to 8 reps with the heavier weight.

The best types of strength-training exercises and workout plans for older adults are endless, but McCarthy highlights her go-to moves for older adults below. These movements, she explains, focus on areas of the body that are crucial for improving balance and reducing the risk of falls, as well as maintaining independence.

For example, the leg press, push-up and squat require you to push forward and then return slowly, called an eccentric movement, McCarthy explains. These exercises are also crucial in helping to maintain and strengthen those type II muscle fibers.