Archive for September 28th, 2012

Preventing Diabetes With Exercise

Friday, September 28, 2012 // Uncategorized

Exercise is more powerful than any drug out there for the prevention of Type 2 diabetes.  What hasn’t been looked at is what effect the type of exercise has on the risk.  According to this prospective study, lifting weights is an important componet to diabetes prevention.
Original Investigation | Sep 24, 2012

A Prospective Study of Weight Training and Risk of Type 2 Diabetes Mellitus in Men

Anders Grøntved, MPH, MSc; Eric B. Rimm, ScD; Walter C. Willett, MD, DrPH; Lars B. Andersen, PhD, DrMED; Frank B. Hu, MD, PhD
[+-] Author Affiliations

Author Affiliations: Departments of Nutrition (Mr Grøntved and Drs Rimm, Willett, and Hu) and Epidemiology (Drs Rimm, Willett, and Hu), Harvard School of Public Health, Boston, Massachusetts; Institute of Sport Science and Clinical Biomechanics, Exercise Epidemiology Research Unit and Centre of Research in Childhood Health, University of Southern Denmark, Odense (Mr Grøntved and Dr Andersen); Channing Division of Network Medicine, Harvard Medical School and Brigham and Women’s Hospital, Boston (Drs Rimm, Willett, and Hu); and Department of Sports Medicine, Norwegian School of Sport Sciences, Oslo, Norway (Dr Andersen).


Arch Intern Med. 2012;172(17):1-7. doi:10.1001/archinternmed.2012.3138.

Background  The role of weight training in the primary prevention of type 2 diabetes mellitus (T2DM) is largely unknown.

Methods  To examine the association of weight training with risk of T2DM in US men and to assess the influence of combining weight training and aerobic exercise, we performed a prospective cohort study of 32 002 men from the Health Professionals Follow-up Study observed from 1990 to 2008. Weekly time spent on weight training and aerobic exercise (including brisk walking, jogging, running, bicycling, swimming, tennis, squash, and calisthenics/rowing) was obtained from questionnaires at baseline and biennially during follow-up.

Results  During 508 332 person-years of follow-up (18 years), we documented 2278 new cases of T2DM. In multivariable-adjusted models, we observed a dose-response relationship between an increasing amount of time spent on weight training or aerobic exercise and lower risk of T2DM (< .001 for trend). Engaging in weight training or aerobic exercise for at least 150 minutes per week was independently associated with a lower risk of T2DM of 34% (95% CI, 7%-54%) and 52% (95% CI, 45%-58%), respectively. Men who engaged in aerobic exercise and weight training for at least 150 minutes per week had the greatest reduction in T2DM risk (59%; 95% CI, 39%-73%).

Conclusions  Weight training was associated with a significantly lower risk of T2DM, independent of aerobic exercise. Combined weight training and aerobic exercise conferred a greater benefit.

Figures in this Article

Regular physical activity (PA) is a cornerstone in the prevention and management of type 2 diabetes mellitus (T2DM). Achieving a daily amount of moderate or vigorous PA of at least 30 minutes per day is associated with a substantial reduction in the risk of T2DM.1 – 4 This is broadly consistent with the current recommendations regarding PA in adults.5 More recently, evidence from randomized controlled trials6 has shown that resistance training can improve glycemic control in patients with T2DM, even in the absence of aerobic training. This has led to the recommendation for resistance training 3 times per week in individuals with T2DM.7 – 8 However, whereas the evidence that regular aerobic exercise can prevent T2DM is compelling, to our knowledge, no studies have examined the role of weight training in the primary prevention of T2DM.

In this study, we examined the association of weight training with the risk of T2DM in men observed biennially for 18 years in the Health Professionals Follow-up Study (HPFS). In particular, we examined whether the influence of weight training is independent of aerobic exercise and assessed the combined influence of weight training and aerobic exercise on T2DM risk.

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