Is Rebounding Good for Bone Density? What Jumping Does for Ageing Bones

What the bone research shows

Bone is living tissue and it responds to load. The trials that measured it are mostly in the two groups where bone loss matters most.

After menopause. A 2025 systematic review compared hormone replacement therapy with weight-bearing exercise in postmenopausal women across six studies. Exercise improved bone mineral density, with resistance-based and mixed-loading programmes doing best, and results varying with the type and intensity of the exercise. HRT produced larger gains and lowered fracture risk at the hip and spine, and stopping HRT reversed them. (Trevino 2025.) Two things to take from that: exercise works, and HRT is a separate conversation to have with your GP, not something a blog post decides for you.

In osteoporosis. A 2026 network meta-analysis pooled 27 randomised trials, 2,183 people with osteoporosis, and asked which aerobic exercise prescriptions moved bone density. Nearly all of them did, compared with doing nothing. Higher intensity beat moderate and low. Four to five sessions a week beat both fewer and more. The programmes ran 24 weeks, with sessions of 30 to 59 minutes. (Zhou 2026.)

So the shape of a bone-building routine is known: load your bones, do it several times a week, keep it up for months.

Where rebounding sits

Every landing on a trampoline loads your legs, hips and spine through your own body weight, which is what "weight-bearing" means. On that basis rebounding is the right kind of exercise. The honest gap is that the trampoline-specific trials haven't measured bone for long enough to say more.

The best one I know of ran 12 weeks of mini-trampoline training in older women with low bone density, the stage before osteoporosis. Balance, functional mobility, gait and strength all improved, and fear of falling dropped. Bone density moved in the right direction at the spine and hip but the change didn't reach statistical significance in those 12 weeks. (Posch 2019.) Bone is slow tissue. The osteoporosis trials that did show density gains ran twice as long. Whether a longer rebounding programme gets there is a fair question, and an unanswered one.

I'm not going to tell you a trampoline builds bone when the trial that looked didn't find it in three months. What I can tell you is what it did find, and it happens to be the half of the problem most bone advice skips.

The other half of a fracture

A fracture needs two things: a bone that's lost density, and a fall. Bone density gets all the attention. Falls are the part you can train fastest.

That's where the rebounding evidence is strongest. Better balance, better mobility, a steadier gait, more strength in the legs, and less fear of falling, all in the same 12-week trial, in exactly the group at risk. (Posch 2019.) If you're in your 50s or 60s and wondering whether bouncing is worth it, that's the research I'd start with, because a body that doesn't fall doesn't test its bone density.

A bone-smart week

Built from what the trials used, not from a wish list:

• Two resistance sessions. Squats, step-ups, deadlifts with whatever weight you have, or a gym program. This is the exercise type the postmenopausal review rated highest for bone.
• Aerobic work you'll keep doing, most days. The osteoporosis trials landed on four to five sessions a week of 30 to 59 minutes, for six months. That's a lot of sessions, which is why the one you enjoy matters more than the one that's theoretically best.
• Something that trains balance under a bit of surprise. Bouncing does this by design: every jump is a small landing your body has to organise.

A coached session with us covers the last two at once. It's weight-bearing, it's genuinely aerobic, and the balance work is the whole point of the wall. Pair it with two days of lifting and you've got the shape the research describes.

FAQ

Should I get a bone density scan?

Ask your GP. A DEXA scan is quick, and whether and when you need one depends on your age, your history and your family's. Knowing your number turns "am I doing enough?" into a plan you can check in a year.

Is trampolining safe if I have osteoporosis?

Ask your GP or physio before your first session, and tell the coach when you book. The trial above was in women with osteopenia, the milder stage, and it was supervised. We start everyone on the floor and on the wall, and low, before anything else. With a diagnosis of osteoporosis the right first move might be a physio-led program, and we'd rather say that than sell you a session.

Does HRT do more than exercise for bone?

In the review, yes: larger density gains and lower fracture risk, and stopping it reversed the gains. HRT is a medical decision with its own trade-offs, so that's a GP conversation. Exercise is the part you control either way, and it helps whether or not you're on HRT.

How long before bone density changes?

Months, not weeks. The trials that found gains ran about six months at four to five sessions a week. Balance changes much faster, which is another reason to start with what you can feel.

Ready to train the fast half? Guided sessions at Run The Wall in Brookvale are adults-only, groups of four, and coached on every jump. Book a session, or read what else bouncing does for your body in 7 health benefits of trampolining for adults.

References

• Treviño, M., et al. (2025). Comparative Effects of Hormone Replacement Therapy and Exercise on Bone Health in Postmenopausal Women: A Systematic Review. Cureus. doi:10.7759/cureus.99210 (PMID 41536367)
• Zhou, X., et al. (2026). A network meta-analysis of the effects of different aerobic exercise prescriptions on bone density in osteoporosis patients. Frontiers in Endocrinology. doi:10.3389/fendo.2026.1828031 (PMID 42318219)
• Posch, M., et al. (2019). Effectiveness of a mini-trampoline training program on balance and functional mobility, gait performance, strength, fear of falling and bone mineral density in older women with osteopenia. Clinical Interventions in Aging, 14, 2281-2293.