Exercise advice for women in midlife is often vague: "stay active," "try yoga," "do some weights." The research has advanced beyond that. We now know which types of exercise achieve which outcomes, and why doing only one type leaves measurable benefits on the table.

Body Composition Changes During the Transition

The menopausal transition is associated with a redistribution and increase in body fat (particularly visceral fat, stored around internal organs) and a decrease in lean muscle mass. This is distinct from normal aging. Even women who maintain the same total weight often see their body composition shift significantly through the transition: less muscle, more fat, and a redistribution from subcutaneous to visceral depots.[1]

Visceral fat is metabolically active in a way subcutaneous fat is not. It produces pro-inflammatory cytokines and is independently associated with cardiovascular disease, insulin resistance, and metabolic syndrome. Its accumulation during menopause is driven partly by declining estrogen and partly by the muscle loss that reduces resting energy expenditure.

Exercise directly counters both processes: aerobic training reduces fat mass including visceral fat; resistance training preserves and rebuilds muscle. They target different aspects of the same underlying problem.

What Systematic Reviews Show

A 2023 systematic review and meta-analysis examining exercise training and body composition in postmenopausal women found a clear pattern:[2]

Aerobic exercise produced the largest effects on fat mass outcomes: total fat mass, body fat percentage, and waist circumference all improved with aerobic training alone.

Resistance training produced the largest effects on muscle mass outcomes: lean body mass and strength were better preserved and increased compared to aerobic exercise alone.

Combined training outperformed either type in isolation: the greatest fat mass reduction and best muscle mass outcomes appeared in combined training groups.

A separate 2023 network meta-analysis on bone mineral density found that resistance exercise produced a standardised mean difference of 0.40 for lumbar spine BMD, with meaningful effects at the femoral neck, making it the most effective single exercise type for bone preservation.[3]

Aerobic Exercise

For vasomotor and cardiovascular benefit, aerobic exercise means sustained moderate-intensity activity that elevates heart rate: brisk walking, cycling, swimming, dancing, jogging. The standard evidence-based target is 150 minutes per week of moderate-intensity aerobic activity, or 75 minutes of vigorous intensity.

Aerobic exercise may reduce hot flash frequency, and several trials have found benefits on sleep quality and mood in menopausal women.[4] These effects are indirect (reducing stress hormones and improving sleep architecture) rather than hormonal, and more modest than the body composition effects.

Resistance Training

Resistance training means any exercise that works muscles against load: free weights, machines, bands, or bodyweight. For perimenopausal women, the primary targets are:

Bone density, which responds to mechanical loading and reduces fracture risk. Higher-load, lower-repetition training appears to have advantages for bone outcomes over low-load, high-repetition protocols.

Muscle mass and strength, which decline during the transition. Regular resistance training directly slows this decline, supporting metabolic rate, functional capacity, and long-term independence.

Insulin sensitivity, which improves with resistance training independently of changes in fat mass.

Two to three sessions per week, covering major muscle groups (legs, back, chest, shoulders, core), with progressive load increases over time, is the basis of most evidence-supported protocols for this age group.

HIIT After Menopause

High-intensity interval training received substantial attention as a time-efficient approach to improving cardiovascular fitness and reducing body fat. The evidence in postmenopausal women is more mixed. A systematic review found that HIIT effects on body weight and abdominal fat were more pronounced in premenopausal than in postmenopausal women.[2]

HIIT is not contraindicated in postmenopausal women, but the research does not support prioritising it over sustained aerobic and resistance training for the outcomes most relevant to this population. It can supplement an established routine but is not a substitute for either aerobic or resistance work.

Maintaining Exercise Through Symptomatic Periods

Sleep disruption, fatigue, joint pain, and mood changes all reduce the capacity to exercise during perimenopause, precisely when the benefits are most needed.

The practical response is to lower the bar during symptomatic periods rather than stop entirely. Twenty minutes of walking is not a structured training session, but it preserves the habit and produces some cardiovascular and mood benefit. Returning to a full routine after a symptomatic period is easier than building one from nothing.

Resistance training has a practical advantage here: it can be done with minimal equipment (bands, a set of dumbbells) in 30–40 minutes, making it more accessible during fatigue and disrupted schedules than long aerobic sessions.

Starting Point

For women not currently doing structured exercise, or looking to improve what they are doing, the evidence supports this framework:

  • 3–5 sessions per week combining aerobic and resistance work
  • 2–3 of those sessions dedicated primarily to resistance training targeting major muscle groups
  • Remaining sessions as moderate-intensity aerobic activity for at least 30 minutes each
  • Progressive load in resistance work: muscle and bone adaptation requires that load increases over time as the body adapts

Any movement is better than none. But the research is clear that combining aerobic and resistance work produces outcomes that neither achieves alone.

References

[1] Marlatt, K. L., Pitynski-Miller, D. R., Polotsky, A. J., et al. (2022). Body composition and cardiometabolic health across the menopause transition. Obesity, 30(1), 14-27. https://pmc.ncbi.nlm.nih.gov/articles/PMC8972960/

[2] Rodrigues, F., Domingos, C., Monteiro, D., Morouço, P. (2023). Effects of exercise training on body composition in postmenopausal women: a systematic review and meta-analysis. Nutrients, 15(8). https://pmc.ncbi.nlm.nih.gov/articles/PMC10306117/

[3] Shojaa, M., et al. (2025). Effect of different types of exercise on bone mineral density in postmenopausal women: a systematic review and network meta-analysis. Scientific Reports. https://www.nature.com/articles/s41598-025-94510-3

[4] El-Lithy, A., El-Mazny, A., Sabbour, A., El-Deeb, A. (2015). Effect of aerobic exercise on premenopausal and postmenopausal quality of life, sexual function and vasomotor symptoms. Journal of Obstetrics and Gynaecology, 35(7), 689-695. Cited in: Effects of physical exercise on symptoms and quality of life in women in climacteric. https://pmc.ncbi.nlm.nih.gov/articles/PMC11942093/

[5] Berin, E., Hammar, M., Lindblom, H., Lindh-Astrand, L., Rubér, M., Spetz Holm, A. C. (2019). Resistance training for hot flushes in postmenopausal women: a randomised controlled trial. Maturitas, 126, 55-60. See also: HIIT in postmenopausal women analysis in https://pmc.ncbi.nlm.nih.gov/articles/PMC10306117/