Exercising with Friends May Reduce Menstrual Pain: New Study by Professor Junichi Watanabe

Research conducted by Professor Junichi Watanabe from the Department of Physical Therapy at Yamagata Prefectural University of Health Sciences has been published in the international peer-reviewed journal, Women's Health Reports.

Overview
While the health benefits of physical activity are well-documented, the specific relationship between exercise habits and dysmenorrhea (menstrual pain) among Japanese women—particularly the influence of social factors, such as the presence of exercise partners—has remained largely unexplored. This study investigated how not only the frequency and intensity of exercise but also the social context (who one exercises with) correlates with menstrual health.

Study Methods & Results
The study analyzed data from 4,892 Japanese female university students via a comprehensive questionnaire. Participants were surveyed regarding their menstrual status (regularity, pain severity, and use of analgesics) and exercise habits (frequency, intensity, and whether they exercised alone, with friends, or in a group).

Key findings include:
Social Connection Matters: Women who regularly exercised with friends had a 32% lower risk of experiencing significant menstrual pain compared to those who did not exercise (Adjusted Odds Ratio [AOR]: 0.68).Group vs. Solo: Participating in group-based exercise also showed a significant reduction in pain risk. However, exercising alone showed no significant association with reduced menstrual pain. Medication Use: Exercising with friends was further associated with a lower frequency of using analgesics (pain relievers).

Conclusion
The results suggest that for improving women’s health and Quality of Life (QOL), the social and psychological dimensions of physical activity—specifically "interacting with others"—may be as vital as the physical exertion itself. This study provides a new perspective on holistic approaches to managing menstrual symptoms through social-based exercise interventions.

Publication Details
Title: Association Between Exercise Habits, Including an Exercise Partner, and Menstrual Status in a Japanese Population

Authors: Junichi Watanabe, Shinya Furukawa, Teruki Miyake, Hironobu Nakaguchi, Masumi Miyazaki, Ayumi Kusumoto, Yoshimasa Murakami, Osamu Yoshida, Aki Kato, Katsunori Kumamoto, and Yoichi Hiasa

Journal: Women's Health Reports

DOI: 10.1177/26884844251411054