Exercise and Perimenopause: Why Resistance Training Matters Most

Many people in their forties and fifties have trained consistently for years. Only to find themselves being told along the way that this is the stage where low-impact cardio, yoga or Pilates should become the main focus. While these modalities are valuable and absolutely have their place, they don’t tell the full story of what the body needs during this phase.

During the perimenopausal transition, bone density begins to decline at a faster rate. Muscle mass slowly reduces, and metabolic stability becomes harder to maintain. These changes are subtle at first, but they accumulate over time.

And they don’t respond to reduced stimulus. They respond to the right kind.

Resistance training, when it includes enough load to create a meaningful physiological signal, moves from being an optional addition to something far more central. Not just for strength, but for maintaining bone, supporting metabolism, and preserving long-term function through this stage. The key shift is how to manage exercise and perimenopause with appropriate load, frequency, and intent. That’s what turns training from something that simply maintains, into something that actively supports adaptation through change.

What’s Actually Changing During Perimenopause

Perimenopause is a physiological transition, not just a hormonal one.

As oestrogen begins to fluctuate and decline, several systems are affected at once:

• Bone density starts to reduce at a faster rate

• Muscle mass gradually declines

• Fat distribution shifts, often towards the midsection

• Insulin sensitivity becomes less stable
  

These changes can feel sudden, but they’re not random. They follow a clear biological pattern and what matters is how you respond to them.

Why Resistance Training Sits at the Centre

Recent research has made this clearer than ever: the type of exercise you do during this phase matters.

A 2024 review (Hsu et al.) looking at over 1,200 postmenopausal women found that progressive resistance training significantly improved bone mineral density, particularly in the spine, alongside strength and functional capacity.

Another large-scale analysis in Scientific Reports (2025) compared different exercise approaches. The most effective protocols for bone health consistently included resistance training, often combined with aerobic work.

The takeaway is simple. Movement matters. But load matters more. Without sufficient resistance, the body doesn’t receive the signal it needs to maintain bone and muscle.

Where Other Forms of Exercise Fit

Yoga, Pilates and low-impact cardio still have value. They support mobility, coordination, cardiovascular health and recovery. They often improve consistency because they’re enjoyable and accessible. But they don’t provide enough stimulus on their own to protect against the specific changes happening during perimenopause.

When they become the main focus, something important is missing. A more effective structure places resistance training at the centre, with these modalities supporting it-not replacing it.

What “Effective” Resistance Training Actually Means

This isn’t about extremes. Research consistently shows that moderate to heavy loading, roughly 70–85% of your maximum effort, is where the most meaningful adaptations happen, particularly for bone density.

That doesn’t mean starting there. It means progressing towards it. Two to three sessions per week is enough for most people, when structured well. And the focus should stay on:

• Compound movements (squats, hinges, pushes, pulls)

• Gradual increases in load

• Sufficient recovery between sessions
  

It’s not about doing more. It’s about doing the right things, consistently.

One of the more interesting shifts in recent research is the move towards impact and high-strain loading. Bone responds not just to weight, but to how force is applied. Small amounts of controlled impact, like step-ups with intent, or low-level jumping, can add a valuable stimulus when introduced appropriately.

A More Useful Way to Understand Progress

In this phase, one of the most common frustrations is the sense that effort and outcome are no longer lining up in the same predictable way. You can be training consistently, doing what previously worked, and still feel as though the feedback from your body has become less clear.

Rather than a sign that something is going wrong, this often reflects a shift in what your body now responds to. The inputs haven’t stopped working, they simply need to be interpreted differently.

Because of this, the scale becomes a less dependable marker of progress on its own. It captures fluctuations that are influenced by far more than fat loss or muscle gain, particularly during periods of hormonal change.

A more meaningful picture tends to come from what is happening beneath that:

• strength gradually improving, even in small increments

• movement feeling more stable and controlled

• energy holding more consistently across the week

• and recovery between sessions becoming smoother over time

These are the signals that the system is adapting in the right direction. Changes in shape and composition usually follow, but they rarely lead the process.

The Longer View of Exercise and Perimenopause

The value of resistance training at this stage isn’t limited to short-term change. It is fundamentally protective.

Maintaining and building strength supports bone density at a time when it is naturally declining. Preserving muscle mass helps regulate metabolism, mobility and long-term independence. Improvements in insulin sensitivity contribute to broader metabolic health. None of these outcomes are abstract or distant. They influence how the body feels and functions not just now, but over the years ahead.

Perimenopause doesn’t change the goal of training. It refines the approach.

Resistance training becomes less of an optional component and more of a foundation. When it is applied consistently, with appropriate load and intent, it remains one of the most effective tools for supporting the body through this transition, and beyond.