Sedentary Lifestyle Linked to Increased Stress Levels in Midlife

A recent longitudinal study indicates that inadequate physical activity during adulthood significantly raises biological stress levels by midlife. Conducted by researchers from the University of Oulu and the Oulu Deaconess Institute Foundation, the study analyzed data from over 3,300 participants who were part of the Northern Finland Birth Cohort 1966. The findings emphasize the protective role of regular physical activity in mitigating long-term stress.

The research followed individuals from the age of 31 to 46, examining their leisure-time physical activity in relation to the World Health Organization‘s guidelines. Participants who did not meet the recommended levels of physical activity exhibited a higher allostatic load, which is a measure of the cumulative strain on the body from long-term stress, by midlife.

Physical Activity’s Role in Stress Management

According to the results, those maintaining an active lifestyle in accordance with health recommendations were less likely to experience excess biological stress. The study also revealed that a decline in physical activity correlates with an increased stress burden. Conversely, individuals who enhanced their physical activity levels throughout adulthood did not show a significant difference in stress levels compared to those who had remained consistently active.

Maija Korpisaari, a Doctoral Researcher at the University of Oulu, stated, “In terms of stress burden, both the amount of physical activity in youth and in adulthood are important. Regular physical activity in adulthood appears to help the body cope with stress even into midlife.” This underscores the necessity of integrating exercise into daily routines to manage stress effectively.

The study utilized various biological indicators to assess stress load, establishing the reliability of its findings through consistent results across different measures. The implications of this research highlight physical activity as a vital component of stress management strategies.

Future Research Directions

Researchers call for further longitudinal studies to explore the impact of different stress indicators and to deepen the understanding of how physical activity influences the body’s stress systems throughout various life stages.

The full findings of this study are published in the scientific journal Psychoneuroendocrinology, providing a significant contribution to the understanding of physical health and stress management. As the world continues to grapple with stress-related health issues, these insights could guide public health recommendations and personal lifestyle choices.

For more details, the study can be accessed through the journal’s website, with the reference: Korpisaari, M., et al. (2025) Association of longitudinal changes in physical activity with allostatic load in midlife. Psychoneuroendocrinology. DOI: 10.1016/j.psyneuen.2025.107725.