Weight-Bearing Exercises for Osteoporosis — and Which to Avoid

The Royal Osteoporosis Society sums up bone-protective activity in three words: Strong, Steady and Straight — strong (muscle and bone strengthening), steady (balance to cut fall risk) and straight (posture and back care). It is a useful map for this whole article: most of what helps falls under "strong", most of what protects you from fractures falls under "steady", and most of what to adapt falls under "straight".

What exercises actually build bone if you have osteoporosis?

Two types of exercise matter most for bone: weight-bearing impact exercise and progressive muscle-strengthening (resistance) exercise. Weight-bearing means your feet and legs support your weight — walking, stair-climbing, jogging and dancing all count, while swimming and cycling, though excellent for general fitness, do not load the skeleton in the same way. NHS Resistance exercise works by tendons pulling on bones as your muscles contract, which stimulates bone to maintain its strength. NHS

The two work best together. The Royal Osteoporosis Society's position is that the best approach combines strength work with impact exercise, rather than relying on either alone. Royal Osteoporosis Society If you want a deeper walk-through of the specific movements, our guide to the best exercises for bone health breaks them down, and how to improve bone density naturally sets exercise alongside diet and lifestyle.

How much impact exercise should you do — and how hard?

The Royal Osteoporosis Society suggests building up to around 50 moderate impacts on most days of the week, and you can spread them through the day. Moderate impacts include jumps, skips, jogs or hops — short bursts that briefly load the bones and can be woven into ordinary routines rather than done all at once. Royal Osteoporosis Society

The intensity should be matched to your ability, and this is where a diagnosis changes the plan. If you have had spinal fractures or multiple broken bones, the ROS advises staying with low-impact activity — walking, marching or stair-climbing — building up to about 20 minutes on most days, rather than adding jumps or hops. Royal Osteoporosis Society The point is progression, not heroics: start where you are and add a little over time.

How much strength training, and can it actually rebuild bone?

Aim for muscle-strengthening exercise on 2-3 days a week, with a rest day in between, working the legs, arms, back and stomach. A session of roughly 20-30 minutes, aiming for 8-12 repetitions and building up to about 3 sets, is the pattern the Royal Osteoporosis Society describes — with heavier weights added only under a qualified exercise instructor. Royal Osteoporosis Society Back-strengthening work specifically is recommended on 2-3 days a week as part of the "straight" pillar. The Endocrinologist, 2020

Can progressive resistance training actually shift bone density in someone who already has low bone mass? The best evidence says yes, under the right conditions. In the LIFTMOR randomised controlled trial, postmenopausal women with low bone mass (T-score below -1.0) did 8 months of twice-weekly, supervised high-intensity resistance and impact training and improved lumbar-spine bone mineral density by 2.9%, compared with a 1.2% loss in the control group, alongside a smaller gain at the femoral neck — with only one adverse event reported across the trial. Journal of Bone and Mineral Research, 2018

Does balance exercise like tai chi help?

Yes — balance training does not build bone directly, but it lowers the risk of the falls that cause most fragility fractures. A 2023 systematic review and meta-analysis pooling 18 randomised trials and 5,469 older adults found tai chi significantly reduced the number of people who fell (relative risk 0.76, 95% confidence interval 0.71-0.82) and improved balance measures such as the Timed Up and Go and Functional Reach tests. Frontiers in Public Health, 2023

This is the "steady" pillar in action. Balance and muscle-strengthening work is particularly recommended for people over 65 or anyone with balance problems, precisely because preventing a fall is often more protective than any single bone-density gain. The Endocrinologist, 2020

Which exercises should you be careful with if you have osteoporosis?

The main thing to adapt is sustained, end-range or loaded forward bending of the spine. Movements like sit-ups, touching your toes, and the Pilates "roll-down" or "curl-up" can put pressure on a fragile spine, and the Royal Osteoporosis Society suggests replacing them with a hip hinge — bending from the hips while keeping the back straight. Royal Osteoporosis Society The consensus guidance echoes this, advising caution with exercises involving sustained, end-range or loaded forward flexion such as sit-ups or the Pilates roll-down. The Endocrinologist, 2020

As a general precaution, heavy twisting movements and activities with a high risk of falling also warrant extra care — especially if you have had spinal fractures — though the emphasis in the guidance is on adapting technique rather than banning whole categories of exercise. The organising principle is deliberately reassuring: "it is how you lift rather than how much you lift that matters." Royal Osteoporosis Society For younger people whose low bone density traces back to under-fuelling and low energy availability, the priorities are different again — see RED-S syndrome and bone health.

When should you get professional guidance first?

If you have been diagnosed with osteoporosis, talk to your GP or a health specialist before starting a new exercise programme. That is the NHS's standing advice, and it exists so your plan can be matched to your fracture risk rather than to a generic template. NHS The Royal Osteoporosis Society goes further for higher-risk situations: people with spinal fractures or pain, multiple fractures, or repeated falls should seek physiotherapy support to get an individually tailored programme. Royal Osteoporosis Society

Knowing where your bones stand makes that conversation far more useful. A REMS bone-health assessment is a radiation-free way to establish a baseline and monitor your bone density and quality over time — it complements, rather than replaces, a personalised exercise plan from a physiotherapist or clinician, and it lets you and your professional see whether the work you are putting in is holding your bones steady.

The through-line of all the guidance is unglamorous but real: consistency and gradual progression matter more than intensity. A little impact on most days, strength work a couple of times a week, balance practice to stay steady, and technique you can trust — sustained over months — is what the evidence rewards.

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This article is part of our bone health series. Next, read how to improve bone density naturally.