IN SHORT: An older adult can exercise every day and still lose leg strength if their routine does not provide enough resistance to challenge the muscles. Walking and pool exercise support overall health, but may not build the specific leg strength needed for standing, walking, and transfers. Home exercise programs may also become less effective if they no longer match the person's needs. Health problems can contribute to weakness, too.
Daily Exercise Does Not Always Build Leg Strength
An older adult can exercise every day and still get weaker. One reason is that moving the muscles is not the same as strengthening them. Moving the body is important, but maintaining movement does not automatically build the leg strength needed for everyday activities.
Consider a simple example: lifting a leg without added weight may help maintain range of motion. Adding even a small ankle weight makes the muscles work harder. The goal is not to start with heavy weights, but to use enough resistance to challenge the muscles safely. As strength improves, the resistance can gradually increase. Resistance bands and other weights can also be used. This gradual increase in challenge is called progressive resistance training.
Why Home Exercise Programs May No Longer Be Enough
Home exercise programs (HEPs) serve an important purpose. They give older adults exercises to continue after physical therapy ends. However, a home exercise program is generally designed around the person's abilities and safety at the time of discharge. Those needs can change over the following weeks and months.
Exercises that were once challenging may become too easy. If resistance is not increased or the exercises are not adjusted, the program may no longer provide enough challenge to maintain or build strength.
This is not a failure of the physical therapist or the home exercise program. It reflects a limitation of a program intended to be continued independently after skilled therapy ends. Recognizing when exercises need to change - and knowing how to progress them safely - can be difficult without professional guidance.
Each exercise should have a purpose. As strength improves, exercises may need to change to continue challenging the muscles and building the strength needed for everyday activities.
The Exercises May Not Build Functional Leg Strength
Walking is excellent exercise for cardiovascular health. Pool exercise can also support cardiovascular fitness, endurance, and mobility. Both are valuable activities for older adults, but being active does not necessarily mean someone is building the functional leg strength needed to maintain independence.
Consider an older adult who walked twice a week, participated in pool exercise twice a week, and performed standing exercises. Despite this regular activity, the person continued to decline. The routine was not providing the targeted leg-strength training needed to address the person's weakness.
When targeted leg strengthening was added, the person's walking distance increased, transfers became independent, falls stopped, and daily life became more active.
This example illustrates the difference between staying active and building the leg strength needed to function. Standing from a chair, getting in and out of bed, climbing stairs, and lifting the feet while walking all require sufficient leg strength. When that strength declines, everyday activities become harder, even for someone who exercises regularly.
Walking and pool exercise support overall health, but they do not necessarily replace targeted leg-strength training. For an older adult who continues to lose strength despite staying active, the important question is whether their routine is addressing the weakness that limits daily function.
Read our related article, Walking Doesn't Keep You Walking: Why Leg Strength Matters as We Age, to learn more about the difference.
Health Problems Can Affect Strength, but Strength Still Matters
Illness, medication side effects, pain, poor sleep, inadequate nutrition, dehydration, and neurological conditions can all affect an older adult's strength. Fatigue, shortness of breath, or fear of falling may also make it harder to exercise consistently.
These challenges can make maintaining strength more difficult, but they do not automatically mean continued decline is inevitable. Appropriate strength training can help older adults maintain or improve their strength and remain as active and independent as possible, even when living with ongoing health problems.
This is the idea behind the Strength Bank: building a reserve of leg strength may help an older adult better manage periods of illness, hospitalization, or reduced activity. Learn more in our article about the Strength Bank and why maintaining strength matters as we age: Read more Build Your Strength Bank.
Unexplained or worsening weakness should be evaluated by a healthcare professional. The goal is to address underlying health concerns while continuing appropriate exercise when medically safe.
How Tandem Strength & Balance® Can Help
When an older adult continues to lose strength despite exercising regularly, a more targeted approach to leg strengthening may help.
At Tandem Strength & Balance®, we provide private-pay, in-home physical therapy for older adults who want to maintain or improve their strength, mobility, and independence. A physical therapist evaluates the person's abilities and develops an individualized program focused on building the functional leg strength needed for everyday activities.
TandemSB uses progressive resistance training, adjusting exercises as strength improves. The goal is not simply to help an older adult exercise more, but to build the strength needed to stand from a chair, walk with greater confidence, manage transfers, and remain active in daily life.
Contact TandemSB to learn more about individualized, in-home strength and balance training for older adults.
Get Strong. Stay Strong.
Research Supporting Strength Training in Older Adults
Research supports the importance of progressive strength training for maintaining muscle strength and physical function as we age. A Cochrane review found that progressive resistance training can improve muscle strength and everyday activities, including standing from a chair and climbing stairs.
The World Health Organization also recommends combining aerobic activity with muscle-strengthening exercise for older adults. Research examining progressive resistance training in adults over 65 has likewise found improvements in lower-body muscle strength.