Research report: Editorial: Impacts of physical activity and exercise on metabolic disorders

A special issue in Frontiers in Endocrinology brings together evidence on physical activity, structured exercise, psychological processes and digital tools in relation to metabolic disorders. The editorial synthesizes contributions covering cardiometabolic disease, type 2 diabetes, obesity, polycystic ovary syndrome and ageing, rather than reporting results from one new trial. Across the issue, studies connect habitual activity with lower mortality, compare exercise schedules and intensities, and examine behavioural and digital approaches that may support sustained activity.

The authors present the collection as a translational discussion of how exercise physiology, behavioural science and technology intersect with endocrine and cardiometabolic health. The editorial places metabolic disorders within a broad public-health context. Citing the World Health Organization, the authors report that noncommunicable diseases account for 75% of deaths worldwide, corresponding to 43 million annual deaths, including 18 million considered premature because they occur before age 70.

Conditions including type 2 diabetes, obesity, arterial hypertension and polycystic ovary syndrome are linked in the editorial to societal lifestyle factors such as diet, social habits and regular physical activity. Physical inactivity is reported to affect more than 36% of adults worldwide. Although physical activity and structured exercise are established as non-pharmacological interventions, the issue highlights unresolved questions about dose-response relationships, the comparative effects of different modalities, fractionated versus continuous schedules, psychosocial influences on adherence and the role of digital health platforms.

Using the Mexico City Prospective Study, Pastor-Cisneros and colleagues followed 155,156 adults for more than 18 years. Physical exercise was consistently associated with lower all-cause mortality, with reported reductions of 12% to 16%. Mortality before age 75 was 16% to 20% lower, and cardiovascular mortality was 10% to 15% lower.

The association remained in the presence of established risk factors, including hypertension, diabetes, obesity and smoking. Because this was an observational analysis, the results support an association between exercise and mortality rather than establishing that exercise alone caused the differences. The editorial also describes systemic mechanisms through which exercise may influence metabolic and cardiovascular health.

These include modulation of the gut microbiota, reinforcement of the enteric barrier and synchronisation of circadian metabolic networks, alongside effects on myocardial energy metabolism and oxidative stress. The authors present these mechanisms as a way to connect movement with processes that extend beyond body weight alone. The evidence summarized in the issue, however, comes from different populations, designs and endpoints, so the mechanistic discussion should not be read as a single estimate of exercise’s total effect.

A meta-analysis of mind-body exercise modalities in people with type 2 diabetes found that the apparent advantages of each approach depended on the outcome. Pilates stood out for balance and walking capacity, walking meditation for aerobic fitness, yoga for muscle strength, and mindfulness interventions for reducing anxiety. Rather than identifying one universally superior activity, the analysis suggests that exercise type may matter in relation to the function or outcome being assessed.

Its relevance is especially clear in ageing populations with type 2 diabetes, for whom determining an appropriate volume and form of activity is part of exercise planning. The study evaluates distinct modalities and endpoints in a defined clinical population, and its results do not establish that every programme benefits every person in the same way. Exercise scheduling is another focus of the issue.

Zhang and colleagues compared accumulated exercise, divided into short bouts through the day in the form of “exercise snacks,” with traditional continuous exercise of a corresponding volume. Their equivalence testing indicated that the two approaches were equivalent for chronic outcomes including body-fat percentage, lean mass, waist circumference and plasma lipids. This finding makes fractionation a viable alternative for people facing severe time constraints, but it is narrower than a general claim that any short-bout routine is equivalent to any continuous session.

The comparison concerned schedules matched for total exercise volume, and the measured outcomes were long-term changes in body composition and blood lipids. Within those limits, the study suggests that distributing the same workload across the day may not require abandoning continuous exercise. Intensity produced a different pattern among young university adults.

In the comparison by Sun and colleagues, high-intensity interval training produced significantly greater reductions in body weight, fat percentage, waist circumference and fat mass than moderate-intensity continuous training. The result indicates greater time efficiency for managing adiposity in that population and setting, because the interval and continuous programmes produced different outcomes under the study conditions. It does not show that high-intensity training is superior across populations, metabolic disorders or health outcomes.

The participants were young university adults, so the findings cannot automatically be transferred to older people, adults with diabetes or individuals with substantial mobility limitations, and the editorial does not establish the safety of high-intensity exercise for such groups. Sustaining an active routine involves cognitive and behavioural processes as well as physical capacity. Su and colleagues studied adults and older adults with type 2 diabetes using structural equation modelling.

The model indicated that physical activity was indirectly related to quality of life through exercise self-efficacy, with psychological resilience and self-efficacy forming a sequential pathway. In other words, confidence in one’s ability to exercise and psychological resilience were identified as factors linking participation with quality of life in the analysis. It nevertheless provides evidence about behavioural processes that may be relevant to maintaining physical activity, supporting the editorial’s emphasis on self-efficacy and psychological empowerment alongside physiological outcomes.

Digital interventions form a separate strand of the special issue, particularly in polycystic ovary syndrome. A 2026 systematic review and meta-analysis by Zeng and colleagues examined mobile applications, online platforms and remote monitoring. The synthesis found improvements in body mass index, waist circumference and health behaviours among women with polycystic ovary syndrome, along with reductions in anxiety and depression.

A separate synthesis by Gautam and colleagues examined yoga and mindfulness for PCOS, reporting benefits in regulating the hypothalamic-pituitary-ovarian axis, improving insulin sensitivity, reducing circulating androgens and attenuating psychological stress. Together, these studies connect endocrine, metabolic and psychological outcomes while leaving the precise contribution of individual programme components undetermined. Across the special issue, no single exercise protocol emerges as universally applicable.

Total volume, intensity, temporal distribution, exercise type, psychological support and delivery method are each associated with different outcomes and rest on different bodies of evidence. The mortality analysis concerned habitual physical exercise in a large adult cohort, whereas the remaining work focused on particular populations, schedules, modalities or interventions. The editorial concludes that integrating physical activity, adapted exercise and digital interventions into routine healthcare may help address premature mortality and the economic burden of cardiometabolic and endocrine disease.

Subject of Research: Exercise and physical activity in the prevention and management of metabolic disorders.

Article Title: Editorial: Impacts of physical activity and exercise on metabolic disorders

Article References: Henriques-Neto, D., Peralta, M., & Marques, A. (2026). Editorial: Impacts of physical activity and exercise on metabolic disorders. Frontiers in Endocrinology, 17, Article 2024969. https://doi.org/10.3389/fendo.2026.2024969

Image Credits: AI Generated

DOI: 10.3389/fendo.2026.2024969

Keywords: physical activity, exercise, metabolic disorders, type 2 diabetes, polycystic ovary syndrome, cardiovascular mortality, digital health, exercise intensity, behavioural adherence, gut microbiota, Editorial, Impacts