
Do You Really Need to Lift Heavy for Osteoporosis?
Lifting heavy is safe if you have osteoporosis, but it isn't the only way to build bone. Newer research shows moderate-intensity strength training can be just as effective, which means you can start where you are and still make real gains.
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Where does the Lifting Heavy mantra come from?
The idea traces back to the LIFTMOR trial, run by Griffith University in Queensland. It followed 101 postmenopausal women, average age around 65, all with low bone density (osteopenia or osteoporosis).
The goal was to test whether high-intensity training was safe for this group. High intensity meant working at about 85% of your maximum.
The results were impressive:
Bone mineral density improved
Physical function improved
There were no vertebral fractures
That finding challenged the old advice to avoid loading the spine or lifting anything heavy. Over time, though, the message shifted from "high intensity is safe" to "high intensity is what you need".
Who was left out
The trial received 568 expressions of interest but enrolled only 101 women. Many were excluded because they had other health conditions.
That's sound research design, since it removes variables. But it doesn't reflect who exercise physiologists actually see. Most of our clients with osteoporosis have at least one other condition, so the trial tells us high intensity is safe for healthy women over 65. It doesn't tell us it's the best option for everyone.
What the newer research shows
A recent meta-analysis compared resistance training intensities in postmenopausal women and found there's no single magic number for bone health. It grouped studies by intensity, as a percentage of the most you can lift once:
High: 85% and above (only 4 studies)
Moderate: 65–80% (40 studies)
Low: under 65% (19 studies)
High intensity is actually the least studied of the three. Here's how each performed at the key sites for osteoporosis:
- Lumbar spine: high intensity gave the best result; low and moderate also helped.
- Femoral neck (hip): low and moderate worked equally well; not enough data on high.
- Total hip: only moderate intensity made a difference; not enough data on high.
High intensity came out on top for the spine. Moderate intensity matched or beat low intensity everywhere else, and was the only one to improve total hip density.
This has changed our own practice. We used to recommend high intensity by default, as does Exercise Sports Science Australia's position statement for exercise physiologists. The newer evidence says moderate can be just as effective.
Why this matters in the clinic
Telling everyone they must lift at 85% can stop people exercising before they've started. Picture a 70-year-old with osteoporosis who hasn't exercised in years and is nervous about moving. Being told to lift near their maximum is a big ask.
Instead, we can start where the person is and build capacity from there. Even reaching 65% of their maximum is still doing real work for their bones.
This matters most for people who are:
- New to exercise or deconditioned
- Living with pain or a past injury
- Fearful of heavy lifting
The LIFTMOR protocol also underpins the popular Onero program, which uses five sets of five reps at high intensity. It's a good, research-based program. But a fixed protocol can't easily adapt when the evidence changes or when a client needs a different starting point. Having more options lets us tailor the program to the person, which generally gets better results.
So is heavy lifting still worth it?
Yes. Heavy training is good for you; it just isn't the entry requirement. If someone gets stronger and can handle heavier loads, there's no reason to stop progressing them because they have osteoporosis.
We still build periods of heavier training into many clients' programs, for two main reasons.
Real-life confidence. Life asks us to move a bookshelf or lift a heavy pot plant. Practising heavier lifts in a supervised setting builds both the physical capacity and the confidence to handle those moments.
Most people underestimate their effort. In theory, 85% means you can complete five or six reps and couldn't manage a seventh. In practice, clients rarely know where their true limit is, because they've never pushed that far. We often watch a sixth rep move smoothly when several more were clearly in the tank.
So even when a program says 85%, many people are really working at 70–80%. Aiming high still has value: if you don't hit the exact mark, you're still getting the benefits. And over time, clients get much better at judging their own effort.
Is it safe to bend and lift with your back?
The LIFTMOR trial found no fractures, even with exercises like deadlifts that load and bend the spine. That's one of its most valuable findings.
The old advice was: you have osteoporosis, so don't bend, don't lift heavy, keep your back straight. But bones need load to adapt. Avoiding it altogether works against the very thing you're trying to improve.
Rather than labelling bending or lifting as dangerous, we look at the individual: their bone health, history, confidence and capacity.
For clients who feel nervous, we use graded exposure. We start with something that feels easy, show them it's safe and that their body responds well, then progress gradually. Their confidence grows alongside their strength, and over time they reach the intensity we're aiming for.
What to expect at Activate
An osteoporosis program at Activate starts with understanding you, then builds gradually from there.
Your initial consultation
- Your diagnosis and scan results. Your bone density scan shows where you sit on the range, which can guide the intensity we start at.
- Your current week. We look at how much strength and impact exercise you're already doing, and how much more would give you the best chance of maintaining or improving bone density.
- Health screening. We check for other conditions, injuries or concerns that shape your program.
- Moving together. We do some exercise and strength testing to understand your capacity and show you that you're safe to move.
- Your goals and preferences. What you enjoy matters, because a program you like is one you'll stick with.
Your program
Most programs run two to three times a week, with 6 to 10 resistance exercises aimed at a moderate intensity, then progressed slowly over time. Typical exercises include:
- Deadlifts for the spine, often built up to from similar, easier movements
- Leg press or squats for the femoral neck, which is hard to load because few muscles attach there
- Chest press or push-ups for the forearm and wrist, a site of low bone density that doesn't get talked about much
- Impact work, starting with firm marching and heel drops, then progressing towards jumping
Everything is adapted to your other health conditions and injuries, and progressed at a pace that works for you.
The bottom line
Heavy lifting and impact exercise are safe with osteoporosis. Credit to the LIFTMOR trial for showing that around a decade ago.
Training at 85% or more isn't essential. Moderate intensity can be just as effective for building bone density.
The starting point is lower than you've been told. You can begin where you are and progress from there.
Look for a practitioner who will treat you as an individual and involve you in decisions, rather than handing you a one-size-fits-all plan. Any exercise is beneficial, and putting barriers in front of it doesn't help anyone.
Ready to build stronger bones at your own pace? Book an initial consultation with one of our exercise physiologists at Activate Allied Health in Balwyn North.
This post is based on an episode of the Activate Edge podcast featuring Rory Scott, Director and Accredited Exercise Physiologist and Nathaniel Christoforou, Director and Accredited Exercise Physiologist.











