PCOS and exercise: how training helps and what works best
Polycystic ovary syndrome affects around one in ten women, and exercise is one of the best-supported tools for managing it. Our editorial team explains how training works on insulin and hormones and which approaches the evidence favours.
PCOS in brief
Polycystic ovary syndrome (PCOS) is the most common endocrine disorder in women of reproductive age, affecting an estimated one in ten. It is diagnosed when at least two of three features are present: irregular or absent ovulation, clinical or biochemical signs of excess androgens, and polycystic ovarian morphology on ultrasound, after other causes have been excluded.
At its core lie insulin resistance and hormonal imbalance. High insulin levels stimulate the ovaries to produce more androgens and disrupt normal ovulation. This contributes to irregular periods, acne, excess hair growth, difficulty managing weight and a higher long-term risk of type 2 diabetes and cardiovascular disease, as reviewed by Azziz and colleagues.
Insulin resistance in PCOS is present in many women regardless of body weight. That is important because it means exercise is relevant to everyone with the condition, not only to those trying to lose weight.
The 2023 international evidence-based guideline, led by Teede and colleagues and endorsed by many professional bodies, places lifestyle interventions – including physical activity – at the centre of PCOS management.
What exercise does in PCOS
Physical activity increases glucose uptake by muscle through insulin-independent pathways and improves insulin sensitivity over time. Lower insulin levels can, in turn, reduce ovarian androgen production and help restore more regular cycles in some women.
A meta-analysis by Patten and colleagues in 2020 found that exercise improved insulin resistance, cardiorespiratory fitness and some body composition measures in women with PCOS, with vigorous-intensity training showing the most consistent benefits. Kite and co-workers in 2019 reached similar conclusions, noting that exercise with or without diet improved several metabolic markers.
- Improved insulin sensitivity and glucose control
- Better cardiorespiratory fitness
- Reduced waist circumference and visceral fat
- Possible improvements in menstrual regularity
- Better mood, self-esteem and sleep quality
Hutchison and colleagues showed in 2011 that twelve weeks of intensified aerobic exercise improved insulin resistance in overweight women with PCOS, even with modest changes in weight. The message is that benefits do not depend solely on the scales.
Which type of training?
There is no single "PCOS workout". The guideline recommends the same physical activity targets as for the general adult population, with an emphasis on consistency and enjoyment. In the UK, the Chief Medical Officers advise at least 150 minutes of moderate or 75 minutes of vigorous activity per week, plus muscle-strengthening activities on two or more days.
| Training type | Main benefits in PCOS | Practical tips |
|---|---|---|
| Aerobic (running, cycling, swimming) | Insulin sensitivity, heart health | Build up gradually; include some higher-intensity work |
| Interval training | Time-efficient fitness gains | 1–2 sessions a week once a base is established |
| Resistance training | Muscle mass, glucose disposal, body composition | Major muscle groups, progressive loading |
| Yoga, Pilates, walking | Stress reduction, mobility, adherence | Useful additions, especially early on |
Resistance training deserves particular emphasis. Muscle is the main site of glucose disposal, so increasing muscle mass helps with insulin sensitivity. Some women worry that strength training will make them "bulky" because of higher androgen levels; in practice, muscle gain is slow and controlled by training choices.
Barriers and how to overcome them
Women with PCOS often face specific barriers: fatigue, low mood, body image concerns, joint discomfort associated with higher weight and frustration when results are slow. The guideline explicitly mentions weight stigma and recommends that clinicians use respectful, non-judgemental language.
Setting goals that are not purely weight-based – such as walking further, lifting heavier or sleeping better – can maintain motivation. Training with a partner, group or coach also improves adherence, which is the single biggest predictor of long-term benefit.
Very intense training combined with large calorie deficits can disrupt menstrual function further and lower energy availability. A balanced approach, with adequate carbohydrate around training and enough protein, supports both performance and hormonal health.
Exercise alongside medical treatment
Exercise complements but does not replace medical care. Depending on symptoms and goals, doctors may prescribe the combined oral contraceptive pill, metformin, anti-androgen treatment or ovulation induction. Lifestyle measures improve the response to many of these treatments.
A Cochrane review by Lim and colleagues in 2019 found that lifestyle interventions improved several metabolic and hormonal outcomes in PCOS, although evidence on fertility outcomes was limited. Women planning pregnancy should discuss their exercise programme with their doctor.
Supplements such as inositol are often discussed in relation to PCOS, but evidence is mixed. Any supplement should be discussed with a GP, especially when combined with prescribed medicines.
Editorial team's conclusions
Exercise is one of the most effective tools for managing PCOS, improving insulin sensitivity, fitness and wellbeing even when weight changes little.
A combination of aerobic training, including some vigorous work, and progressive resistance training appears most beneficial. Consistency matters more than any particular programme.
Exercise works best alongside appropriate nutrition, sleep and medical care, with goals that go beyond the scales.
Readers may also be interested in our articles on inositol and PCOS, on strength training for women and on energy availability in female athletes.
References
- Teede HJ, Tay CT, Laven JJE, et al. Recommendations from the 2023 international evidence-based guideline for the assessment and management of polycystic ovary syndrome. J Clin Endocrinol Metab. 2023;108(10):2447–2469.
- Azziz R, Carmina E, Chen Z, et al. Polycystic ovary syndrome. Nat Rev Dis Primers. 2016;2:16057.
- Patten RK, Boyle RA, Moholdt T, et al. Exercise interventions in polycystic ovary syndrome: a systematic review and meta-analysis. Front Physiol. 2020;11:606.
- Kite C, Lahart IM, Afzal I, et al. Exercise, or exercise and diet for the management of polycystic ovary syndrome: a systematic review and meta-analysis. Syst Rev. 2019;8(1):51.
- Hutchison SK, Stepto NK, Harrison CL, et al. Effects of exercise on insulin resistance and body composition in overweight and obese women with and without polycystic ovary syndrome. J Clin Endocrinol Metab. 2011;96(1):E48–E56.
- Lim SS, Hutchison SK, Van Ryswyk E, et al. Lifestyle changes in women with polycystic ovary syndrome. Cochrane Database Syst Rev. 2019;3(3):CD007506.
