Combined aerobic and resistance training, and incidence of diabetes: A retrospective cohort study in Japanese older women

Abstract

Abstract Aims/Introduction To investigate the relationship between combined aerobic and resistance training, and the incidence of type 2 diabetes mellitus. Materials and Methods The present study included 10,680 Japanese women. Participants enrolled between 2005 and 2010, and were followed up until 2014. The frequency of combined training was counted for the first 3 months, the 6th month and the 9th month. In 2014, women reported whether or not they had diabetes, as well as the year of developing diabetes. Hazard ratios and 95% confidence intervals (CI) for the incidence of type 2 diabetes were obtained using Cox proportional hazard models. Results The median duration of follow up was 5 years, with 166 women developing type 2 diabetes. Using the lowest frequency of training group (1st quartile) as the reference, the hazard ratios for the second through fourth quartiles was as follows: 0.95 (95% CI 0.64–1.41), 0.73 (95% CI 0.48–1.13) and 0.69 (95% CI 0.44–1.07), respectively (P for trend = 0.116). After adjustment for age, body mass index and thigh circumference, the hazard ratios were: 0.84 (95% CI 0.56–1.26), 0.69 (95% CI 0.45–1.06) and 0.61 (95% CI 0.39–0.95), respectively (P for trend = 0.040). Conclusions A higher frequency of combined aerobic and resistance training is associated with a lower risk of developing type 2 diabetes in Japanese women.

Keywords

• Body mass index
• Epidemiology
• Exercise