Osteoporosis and Bone Health
Osteoporosis means bone has become less dense and more fragile, raising the risk of fracture — most commonly at the spine, hip, and wrist. Bone responds to load, which is why weight-bearing and resistance exercise are central to management rather than optional additions to medication and calcium. But the type of loading matters more here than almost anywhere else in exercise prescription: repeated forward bending and twisting under load increase the risk of vertebral fracture in people with established osteoporosis, and generic exercise advice can cause harm. Preventing falls matters as much as bone density, because most fractures happen when someone falls.
What osteoporosis is
Bone is living tissue that continuously remodels — old bone removed, new bone laid down. Osteoporosis is what happens when removal outpaces replacement, leaving bone less dense and structurally weaker.
It has no symptoms until a fracture occurs, which is why it's frequently diagnosed only after one.
Osteopenia describes lower-than-normal bone density that hasn't reached the threshold for osteoporosis. It's a risk marker rather than a disease, and it's where prevention has the most to work with.
Diagnosis is usually by DEXA scan, alongside fracture risk assessment that takes account of age, history, and other factors.
Why exercise matters here
Bone adapts to the loads placed on it. Loading stimulates bone formation; the absence of loading accelerates loss. That's why extended bed rest and inactivity reduce bone density measurably.
- Loading the skeleton helps maintain bone density, particularly at the sites that matter — hip and spine.
- Preventing falls matters at least as much, because most fragility fractures happen when someone falls. Improving balance and strength reduces fracture risk regardless of what happens to bone density. → Falls and balance
What to be careful about
This is where generic exercise advice becomes a safety issue. In established osteoporosis, particularly with previous vertebral fracture, certain movements carry increased fracture risk:
- Repeated or loaded forward bending of the spine — including some conventional sit-ups, toe-touching, and loaded rowing movements
- Forceful twisting of the trunk, particularly combined with bending
- High-impact activity where fracture risk is high
- Movements that combine bending and twisting — reaching down and across to lift something is the everyday version
The concern is well established. Research comparing exercise types in women with osteoporosis found substantially higher rates of vertebral fracture in those doing spinal flexion exercises compared with extension exercises.
What helps
- Weight-bearing exercise — activity where you support your own body weight against gravity. Walking is weight-bearing but a relatively low stimulus for bone; higher-impact activity provides more, where it's safe.
- Progressive resistance training — this is where the strongest bone-loading stimulus comes from, and it's frequently omitted from advice given to older adults. Muscle pulling on bone is what drives adaptation.
- Balance and functional training — for the falls half of the equation, which is at least as important.
- Postural and back extensor strengthening — supports spinal posture and is generally recommended in preference to flexion-based work.
- Consistency over years. Bone adapts slowly, and the benefit fades when loading stops.
Alongside exercise: medical management, calcium and vitamin D as advised by your doctor, stopping smoking, and moderating alcohol. Exercise complements these rather than replacing them. → Find a physical therapist
After a vertebral fracture
Common, frequently missed, and different to manage. Many vertebral fractures happen without a fall — a sneeze, a bend, lifting something light. Some cause sudden severe back pain; others are found incidentally.
Recovery involves pain management, gradual return to movement, posture and back extensor work, and adjusting daily tasks to reduce spinal loading — how you get out of bed, how you lift, how you reach.
Fear of movement is common afterward and worth addressing, because the reduced activity that follows accelerates bone loss.
Goals worth setting
Carry a grocery bag in each hand · Get up from a low chair unaided · Walk 30 minutes on uneven ground · Lift a grandchild safely · Return to my exercise class
Improve bone density · Increase spinal extensor strength
Frequently asked questions
What exercise is best for osteoporosis?
Weight-bearing activity plus progressive resistance training, alongside balance work. Resistance training is frequently left out of advice given to older adults, and it's where much of the bone-loading stimulus comes from.
What exercises should I avoid with osteoporosis?
In established osteoporosis, particularly with previous fracture, repeated or loaded forward bending of the spine and forceful twisting carry increased fracture risk. This needs individual assessment rather than a generic list — ask a physical therapist about your situation.
Can exercise reverse osteoporosis?
Exercise helps maintain bone density and substantially reduces fracture risk by improving strength and balance. It's part of management alongside medical treatment.
Why does falls prevention matter for osteoporosis?
Because most fragility fractures happen when someone falls. Improving balance and strength reduces fracture risk regardless of what happens to bone density.
Is walking enough?
Walking is weight-bearing and worth doing, but it's a relatively low stimulus for bone and hasn't been shown to prevent falls on its own. Resistance and balance training add what walking doesn't.
How do I know if I've had a vertebral fracture?
Sudden back pain after a minor movement, loss of height, or a developing forward curve of the upper back all warrant assessment. Many vertebral fractures happen without a fall and are missed because the pain is assumed to be muscular.
Is osteopenia the same as osteoporosis?
No. Osteopenia describes lower-than-normal bone density that hasn't reached the osteoporosis threshold. It's a risk marker, and it's where prevention has most to work with.
Related
Geriatric therapy · Falls and balance · Low back pain · Recovery after hip replacement
Find a physical therapist · Find an occupational therapist · Adult orthopedic therapy · All adult therapy
Disclaimer. For general educational purposes; not medical advice, diagnosis, or treatment. Exercise programs for established osteoporosis should be individually assessed. Contact your doctor for sudden back pain, loss of height, or a fracture after a minor injury.