107: Does it Have to be Heavy? Rethinkin...

In this episode of the Movement Logic Podcast, we take a hard look at one of our own core messages and ask: does it have to be heavy to build bone? We unpack a landmark systematic review and meta-analysis that compared more than 100 exercise interventions in postmenopausal women, looking at low, moderate, and high intensities across resistance training, impact, and combined programs.

We explain the big picture: resistance training works across intensities, moderate intensity often performs just as well as heavy, and impact-only isn’t the standalone solution it’s often made out to be. We also highlight how few truly high-intensity trials exist, why that matters, and what it means for interpreting the data.

Along the way, we reflect on why it’s important to update your message when new evidence emerges, and how this research shifts—not our programming, but our language—around lifting heavy. You’ll come away with a clearer understanding of what actually builds bone, what the science says (and doesn’t yet say), and why there’s more than one effective way to get stronger bones.

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00:00 Introduction and Episode Overview

09:37 New Research on Exercise Intensity and Bone-Building Exercise for Postmenopausal Women

37:08 About the Systematic Review and Meta-Analysis

52:20 Meta-Analysis Results Overview

54:16 Lumbar Spine Analysis

59:00 Femoral Neck Analysis

01:01:43 Total Hip Analysis

01:02:40 Key Takeaways and Summary

01:04:17 Meta-Regression Insights

01:09:47 Clinical vs. Statistical Significance

01:14:14 Discussion on Bias

01:17:26 Engaging with the Community and Expert Opinions

01:39:46 Debunking Myths About Women and Heavy Lifting

01:40:39 Addressing Misconceptions around Lifting Heavy

01:47:25 Cultural Shifts and Women in Strength Training

02:05:58 Practical Benefits of Heavy Lifting

02:11:44 Final Thoughts

REFERENCES:

LIFTMOR Trial and YouTube video

Kistler-Fischbacher Systematic Review with Meta-Analysis

91: LIFTMOR, Not Less: An Interview with Professor Belinda Beck

Stu Phillips IG page and post

Korpelainen paper

100: The Hidden Cost of "Just Do Something" Fitness Advice