Osteoporosis and heavy barbells
For decades, women with low bone density were advised to walk and avoid load. An eight-month study showed the opposite — and this is perhaps the most unexpected result of everything we have reviewed.
6 min read
What people believe
A diagnosis of osteoporosis almost always means a ban: do not lift heavy, do not jump, protect yourself. The logic seems obvious — the bone is fragile, so a load will break it. Almost all recommendations a person hears at a clinic are built on this.
What the study showed
In the LIFTMOR trial, postmenopausal women with lower-than-normal bone density spent eight months doing what they are usually forbidden to do: squats, deadlifts, and overhead presses following a five sets of five reps scheme with weights above 85 percent of maximum, plus chin-ups with impact landings. Twice a week, for thirty minutes.
Bone mineral density of the lumbar spine increased by 2.9 percent, femoral neck by 0.3 percent, and height increased by 0.2 centimeters. In the comparison group following a low-intensity program, the metrics declined.
Watson SL et al., Journal of Bone and Mineral Research, 2018
There was only one adverse event among forty-nine participants over eight months — mild back pain that resolved on its own. Not a single fracture.
Why this happens
Bone remodels in response to deformation. Walking provides a load to which the skeleton has long been accustomed, so no signal for remodeling occurs. High loads and impact provide such a signal. What matters is not caution, but the magnitude of the stimulus: in the intensity analysis, it was high load that distinguished working programs from non-working ones.
How we applied this
- In our system, osteoporosis does not block strength exercises and impact load — it moves them to 'under supervision' status.
- A complete block remains where the data is unambiguous: a vertebral fracture in the past year, in which case axial load, impact, and weighted spinal flexion are all prohibited.
- A program for osteoporosis is built around squats, deadlifts, and presses, rather than around their absence.
Caveat
This is a single study on a specific sample, and participants trained under expert supervision. We do not advise starting on your own with near-maximal weights. But the very idea that 'heavy weights are forbidden with osteoporosis' is not supported by evidence — rather the opposite.
This is not medical advice. If you have pain or a medical condition, a doctor decides your workout load, not an app — and we'll tell you directly when that's the case.