What's Happening?
Functional strength training, involving progressive resistance and impact exercises, is being highlighted as the gold standard for building and preserving bone mineral density in individuals with osteopenia and osteoporosis. Unlike general activities
such as walking, swimming, or light resistance bands, which primarily support cardiovascular health and joint mobility, functional strength training applies sufficient mechanical load to stimulate bone remodeling. This approach focuses on compound, multi-joint movements like squats, deadlifts, step-ups, and overhead presses, with deliberate progressive overload. The LIFTMOR randomized controlled trial, published in the Journal of Bone and Mineral Research in 2018, demonstrated that eight months of twice-weekly, supervised high-intensity resistance and impact training increased lumbar spine bone density by 2.9% in postmenopausal women with low bone mass, compared to a 1.2% loss in the control group. The study also reported a significant increase in back extensor strength and a favorable safety record, with only one minor muscle strain across over 2,600 training sessions and no fractures.
Why It's Important?
Osteopenia and osteoporosis affect an estimated 54 million U.S. adults aged 50 and older, with 10.2 million having osteoporosis and 43.4 million having osteopenia. These conditions often remain asymptomatic until a fracture occurs, making proactive intervention crucial. The emphasis on functional strength training represents a significant shift from traditional advice that often prioritizes caution and low-impact activities, which may not provide adequate stimulus for bone density improvement. By promoting heavy, progressive resistance and impact training, this approach offers a pathway to not only preserve but potentially increase bone mineral density, thereby reducing the risk of fragility fractures. This is particularly important as deconditioning from inactivity can compound bone loss and muscle weakness, increasing fall risk. Implementing such programs can lead to better quality of life and reduced healthcare burdens associated with osteoporosis-related fractures.
What's Next?
Individuals diagnosed with osteopenia or osteoporosis are encouraged to seek individualized assessments with qualified clinicians to determine appropriate strength training programs. These assessments should consider bone density results, fracture history, current strength, and movement patterns. Programs like the Osteogenic Strength Program, which are clinician-led and focus on progressive resistance and impact training, are becoming more accessible. The goal is to move beyond generic exercise recommendations and adopt tailored, supervised regimens that provide the necessary mechanical load for bone adaptation. Continued research and clinical implementation of these evidence-based training protocols will likely lead to improved outcomes for a large segment of the U.S. population at risk of or living with low bone density.
Beyond the Headlines
The findings challenge the common misconception that heavy lifting is inherently risky for individuals with low bone density. Instead, the data suggests that under-dosed exercise, while feeling safe, may not provide sufficient stimulus to improve bone health, potentially leading to continued bone loss. This highlights the critical role of proper assessment, technique, and progression in exercise programs for bone health. Furthermore, while strength training builds bone density, it does not automatically prevent falls. A comprehensive strategy must also address fall risk through balance training, as most fragility fractures result from falls. This integrated approach, combining bone-loading exercises with balance improvement, underscores a holistic view of musculoskeletal health and fall prevention, moving beyond single-factor interventions.
