My chat with AI about atrophy and strength training

AI:

Yes. Your muscles can still recover and become stronger, even at 80. In fact, the fact that you have started exercising is very encouraging.

What your orthopedic doctor described as atrophy is very understandable after being in a cast for 40 days. When a leg is immobilized and you are much less active, the muscles lose both size and strength. This can be especially noticeable in the leg that was injured.

The good news is that muscle atrophy from inactivity is not necessarily permanent. Studies involving older adults have shown that muscles can regain strength and size after a period of immobilization when regular exercise is resumed. In one study of people aged 60–80, two weeks of leg immobilization caused significant loss of muscle mass and strength, but retraining brought them back to baseline and produced further improvement after six weeks.

July 23, 2026 - day after the orthopedic doctor said that my bones are completely healed

At 80, can you still build muscle?

Absolutely. Aging does make muscle recovery slower and the amount of muscle gained may be less than in a younger person, but older muscles still respond to exercise. The National Institute on Aging notes that many older adults can increase muscle strength through exercise, helping preserve mobility and independence.

For you, I would think of recovery in three stages:

Regaining strength – your weakened leg muscles gradually become stronger.
Regaining balance and coordination – your brain and muscles relearn how to use the leg normally after the period of immobilization.
Regaining walking ability – as strength, balance and confidence improve, your walking can become steadier and faster.

So even if you don't return exactly to the level you had before your injury, there is very good reason to continue working toward improvement.

Gilbert, Jed, me and Jen at Marikina Sports Center

The type of exercise matters

Walking is excellent, but because your problem includes muscle atrophy, some form of safe strengthening exercise is particularly important. The CDC (Centers for Disease Control and Prevention) of U.S.A. recommends that adults 65 and older include muscle-strengthening activities at least twice a week, together with aerobic and balance activities.

Since your foot has healed according to your orthopedic doctor, you might ask him or a physical therapist whether you can progressively do exercises such as:

sit-to-stand from a chair
gentle leg strengthening
resistance-band exercises
heel raises, if appropriate
balance exercises while holding onto a sturdy support
progressively increasing walking time and distance

Don't try to make up for the 40 days of inactivity by exercising very hard. At your age, gradual progression is much safer and more sustainable. The CDC specifically recommends starting at a level appropriate for your abilities and gradually increasing activity.

And one encouraging point: you don't have to be young to improve. Research in older adults demonstrates that strength can improve with training even after periods of inactivity.

So, if you are asking me, “Is it too late for my muscles to recover because I am already 80?” — No, it is not too late. ❤️

Your orthopedic doctor has told you that the bone has healed. Now your muscles need time and appropriate exercise to catch up. Recovery may take months rather than weeks, but continued, gradual exercise can make a meaningful difference.

If you tell me what exercises you are currently doing, how often you do them, and whether you are still limping or having pain, I can help you understand whether your current exercise routine is addressing the muscle atrophy and suggest a gentle progression to discuss with your doctor or physical therapist.

ME:

My exercises: arm swings (50 up-down, 50 alternating, 50 shoulder hugs, 50 cross, 50 water splash, 50 horizontal), 50 foot thumping while sitting, 50 pilates ring resistance, 50 foot pedal resistance band, 50 wall sits, 50 lifts of 2 dumbbells of 4 pounds each, 25 upward swings of kettlebell. Before my injury, I used to jump 50 times. I do it three times a week. I am still limping a bit, and a little bit of leg pain.

AI: Thank you for giving me the details. Looking at your routine, you are already doing quite a substantial amount of exercise, and I am encouraged that you have continued exercising despite the long period of reduced activity.

The main thing I would change is not necessarily doing more, but making sure that your exercises specifically rebuild the muscles of your injured leg and improve your walking and balance.

Your present routine

You are doing:

300 arm movements — good for shoulder and upper-body mobility.
50 foot thumps
50 Pilates-ring resistance exercises
50 foot pedal/resistance-band exercises
50 wall sits
50 lifts with two 4-lb dumbbells
25 kettlebell swings
Three times a week.

That's a lot of work! And resistance bands, weights and body-weight exercises are all recognized ways of strengthening muscles in older adults. The CDC recommends muscle-strengthening exercise at least twice a week, together with aerobic and balance activities.

But there is one important clue: you are still limping.

Because you are still limping and have some leg pain, I would be more interested in your leg-specific rehabilitation than in increasing the number of exercises.

Your doctor has already confirmed that the bone has healed. But healing of the bone doesn't necessarily mean that the muscles, tendons, balance and walking pattern have completely recovered.

In your situation, I would consider asking your orthopedic doctor or a physical therapist to evaluate:

1. Quadriceps strength
The muscles in the front of your thigh are very important for getting up from a chair, climbing stairs and walking.

2. Calf strength
Your calf muscles help you push off when walking. Weakness here can contribute to a limp.

3. Hip strength
Weak hip muscles can cause the body to compensate while walking.

4. Balance and gait
After 40 days in a cast, you may have developed a habit of protecting the injured leg. Even after the bone heals, that altered walking pattern can persist.

I would be cautious about the jumping for now.

You mentioned that before your injury you jumped 50 times.

I would not automatically return to 50 jumps yet, particularly because you still have pain and a limp. Jumping places considerably more load on the foot and leg than ordinary walking.

Instead, I'd concentrate first on getting to the point where you can walk comfortably, without a limp, and perform strengthening and balance exercises without increasing your pain. Your doctor or physical therapist can tell you when impact exercises such as jumping are appropriate for you.

And don't be discouraged by the slow progress.

This is perhaps the most important thing I want to tell you.

You are 80, but your muscles are not “too old” to improve.

The CDC specifically emphasizes that physical activity benefits people throughout life and that older adults should combine aerobic, strengthening and balance activities.

Your recovery may simply take longer than it did when you were younger.

And I wouldn't judge your progress only by whether you can walk fast again. Look for smaller improvements:

Can you walk farther before becoming tired?
Is your limp becoming less noticeable?
Can you stand from a chair more easily?
Is the injured leg becoming stronger?
Can you balance better?
Is your walking becoming more confident?
Is your pain gradually decreasing?

Those are all signs that your muscles and nervous system are recovering.

One thing I would particularly recommend

Since you are still limping 102+ days after the injury and still have leg pain, I think a physical-therapy/gait assessment would be very worthwhile, even though your bone has healed.

A physical therapist could compare the strength of your left and right legs and give you specific exercises for the muscles that have atrophied. That would be much more targeted than simply adding more repetitions to your current routine.

And please don't interpret the remaining limp as meaning that your recovery has stopped. Muscle recovery can continue for many months when you progressively use and strengthen the muscles.

You have actually given yourself a very good chance of recovering because you are exercising rather than remaining inactive. ❤️If you would like, I can also look at your current exercises one by one and tell you which ones are most useful for rebuilding your left leg, which ones may not be necessary, and what gentle leg exercises you might ask your doctor/physical therapist about.

Me: I missed telling you this. Even my right leg which was never injured, is a bit painful, just like my left leg, which I informed the doctor, and he explained that it was because of atrophy. Yes, I can walk farther before becoming tired. In fact, I don't get easily tired from walking. I've been walking a lot before my injury. I am used to walking a lot. What exercises do I need for my legs to get better?

AI: That additional information actually makes me more encouraged about your recovery. The fact that you can walk farther without getting tired tells me that your general endurance is quite good. Your remaining problem seems to be more about strength, gait, and rebuilding the muscles after the period of inactivity, rather than lack of cardiovascular fitness.

And because both legs now feel somewhat painful, I would not assume that you need simply more exercise. Your doctor's explanation of atrophy may be part of it, but persistent pain in both legs deserves continued monitoring, especially if it changes or worsens.

For adults 65+, current guidance recommends a combination of aerobic activity, muscle strengthening, and balance training. Strength exercises are particularly important because gradually increasing resistance can rebuild or maintain muscle mass and strength at any age.

What I would emphasize for your legs

Since you already walk a lot, I would keep walking for endurance but add targeted strengthening and balance work.

1. Sit-to-stand — very important

Sit in a sturdy chair and stand up without using your hands if you can do so safely. Then slowly sit back down.

Start with 8–10 repetitions, rather than 50.

This works the quadriceps, hips and buttocks—the muscles you need for walking and everyday activities.

2. Supported mini-squats

Hold the back of a sturdy chair or countertop. Bend your knees slightly and straighten again.

Start with 8–10 repetitions.

Because you already do wall sits, you don't necessarily need a large number of these. Quality and control are more important.

3. Heel raises

Hold a sturdy chair.

Rise slowly onto your toes, then slowly lower your heels.

Start with 8–12 repetitions.

This specifically works the calf muscles, which are important for pushing your body forward during walking.

4. Knee extensions

Sit in a chair. Straighten one knee until the leg is almost straight, hold briefly, and lower it slowly.

Do 8–12 repetitions on each leg.

This targets the quadriceps, which can become quite weak after immobilization.

5. Hip strengthening

While holding a chair, slowly move one leg sideways without leaning your body. Return it slowly.

Do 8–12 repetitions on each side.

Strong hip muscles help stabilize your pelvis when you walk and can help with a persistent limp.

6. Balance exercise

This is particularly important after an injury.

Holding a sturdy chair or countertop, practice standing with your feet close together. When that becomes easy, you can progress to placing one foot slightly in front of the other.

Please don't practice standing on one leg without something sturdy to hold onto.

Balance exercises are specifically recommended for older adults because strength and balance together help improve physical function and reduce fall risk.

You don't need 50 repetitions of everything.

What I would emphasize for your legs

Since you already walk a lot, I would keep walking for endurance but add targeted strengthening and balance work.

1. Sit-to-stand — very important

Sit in a sturdy chair and stand up without using your hands if you can do so safely. Then slowly sit back down.

Start with 8–10 repetitions, rather than 50.

This works the quadriceps, hips and buttocks—the muscles you need for walking and everyday activities.

2. Supported mini-squats

Hold the back of a sturdy chair or countertop. Bend your knees slightly and straighten again.

Start with 8–10 repetitions.

Because you already do wall sits, you don't necessarily need a large number of these. Quality and control are more important.

3. Heel raises

Hold a sturdy chair.

Rise slowly onto your toes, then slowly lower your heels.

Start with 8–12 repetitions.

This specifically works the calf muscles, which are important for pushing your body forward during walking.

4. Knee extensions

Sit in a chair. Straighten one knee until the leg is almost straight, hold briefly, and lower it slowly.

Do 8–12 repetitions on each leg.

This targets the quadriceps, which can become quite weak after immobilization.

5. Hip strengthening

While holding a chair, slowly move one leg sideways without leaning your body. Return it slowly.

Do 8–12 repetitions on each side.

Strong hip muscles help stabilize your pelvis when you walk and can help with a persistent limp.

6. Balance exercise

This is particularly important after an injury.

Holding a sturdy chair or countertop, practice standing with your feet close together. When that becomes easy, you can progress to placing one foot slightly in front of the other.

Please don't practice standing on one leg without something sturdy to hold onto.

Balance exercises are specifically recommended for older adults because strength and balance together help improve physical function and reduce fall risk.

You don't need 50 repetitions of everything.

This is something I would change in your current routine.

The CDC's guidance suggests that 8–12 repetitions can constitute one set of a strengthening exercise, with one to three sets depending on the person and exercise. The goal is resistance that makes the last repetitions challenging—not simply accumulating a very large number of repetitions.

So instead of thinking:

"I need to do 50 of each exercise."

Think:

"I need to make my muscles work properly and progressively become stronger."

For example, 10 controlled repetitions with appropriate resistance may be more useful for strengthening than 50 very easy repetitions.

What about your walking?

Keep walking! Since you enjoy walking and you don't become easily tired, it is an excellent aerobic exercise for you. Walking is also specifically recommended as an appropriate aerobic activity for older adults.

But I would not try to walk faster simply to get rid of the limp. Instead, concentrate on walking with good, symmetrical steps and gradually allow your injured leg to participate normally.

And about the jumping...

I would put the 50 jumps on hold for now.

Not because you're 80 and can't jump, but because you are still limping and experiencing pain in both legs. Jumping is a high-impact activity, and there is no need to rush back to it while your walking mechanics are still recovering.

Once your doctor or physical therapist is satisfied with your strength, balance and gait, you can ask whether some form of impact exercise is appropriate for you.

One thing I particularly recommend.

Since you have told me that you are still limping, I think one or two sessions with a physical therapist would be extremely valuable, even though your bone has healed.

A PT can actually measure the difference between your left and right leg and determine whether the limp is coming from weakness in your:

thigh → hip → calf → ankle/foot → balance/gait.

That would allow you to exercise much more intelligently instead of simply doing more repetitions.

And I want to emphasize something positive from what you told me:

You can already walk farther, and you don't tire easily.

That's a very good sign. Your endurance has not disappeared. Now the goal is to rebuild strength and restore your normal walking pattern.

Because you're already exercising three times a week, I would not necessarily increase the number of days. I'd make those sessions more leg-focused and progressive, while continuing your walking on the other days as comfortable.

If the leg pain becomes significantly worse, you develop swelling/redness/warmth, marked weakness, numbness, shortness of breath, or pain that is new and severe, seek medical attention rather than exercising through it.

Search This Blog

In My Solitude