Brief High Intensity Training As A Preventative Factor Against Pre-Diabetes

For the last two decades the diabetes rate here in the United States has increased significantly and it continues to rise with no signs whatsoever of those numbers going down anytime soon. According to a recent survey conducted by the Center For Diseases & Control nearly 26 million Americans have diabetes, with 95% of those cases being type 2 diabetes, in which the body gradually loses its ability to use and produce insulin. A number that by no means small, but what is more disturbing is that estimates are that 79 million Americans are prediabetic.  That’s over one third of the entire US population. A number that reaches out and touches all of us- our friends, our families and us individually as well. Being prediabetic means having blood sugar levels that are higher than what ideal levels should be, but not high enough to be clinically diagnosed as being diabetic.[1,2]

Unfortunately, prediabetes increases your risk of developing type 2 diabetes in addition to the risk of cardiovascular disease and stroke.  What experts term as the  ‘Western Style Diet’ has been implicated as the central cause of our increased rates of diabetes[3] in addition to sedentary lifestyles and obesity. Eating better is an important part of the fight against diabetes but equally important is the need to integrate a regular routine of exercise and physical activity.  However given the demands of modern living most cite lack of time as being the primary reason they don’t engage in regular exercise. [4]That being said, infrequent bouts of brief high intensity training routines of 10-15 minutes have been shown to have a positive effect in improving insulin action and thus could be the answer to those without adequate time to train with a predisposition towards diabetes and obesity.[5]

What Is Prediabetes?

As mentioned above, prediabetes usually precedes a full diabetic diagnosis and is characterized by impaired fasting glucose where fasting blood sugar levels are higher than normal but not elevated to the point of a diabetes mellitus classification. Long term, large scale studies have shown that being prediabetic can cause long term damage to the heart and circulatory system and increase your risk of dying from cardiovascular disease even though there isn’t a full diagnosis of diabetes.[6, 7] Unfortunately, for many there are no marked symptoms of prediabtes, unlike diabetes mellitus which while sometimes difficult to identify without clinical testing does at times have some signs such as fatigue, weight gain,  difficulty seeing, slow healing of cuts and wounds as well as tingling or loss of sensation in the extremities. That being said, given the widespread nature of prediabetes, fasting plasma glucose screening is important for everyone over the age of 30 and might be a good idea for younger individuals who are at risk due to lifestyle and or a high incidence of family history with diabetes.

High Intensity Training As A Preventative Factor Against Pre-Diabetes

The key however, aside from maintaining a healthy body weight through proper diet is to also be sure to incorporate exercise into your routine as a way of both preventing and reducing the risks associated with higher blood fasting levels. One of the easiest and most efficient ways to do this is though the implementation of a high intensity training program- which does not require much in the way of time (as little as three workouts of ten to fifteen minutes duration per week) and is a practical solution for todays’ personal time deprived lifestyles. According to a recent study extremely short duration high intensity training significantly improves insulin action in young healthy males. Type 2 diabetes is a very health problem here in the United States and in developed countries- a veritable pandemic affecting millions of children and adults alike. While it has been conclusively established that the risk of developing Type 2 diabetes can be reduced by regular exercise [8]. It is also true that most people find it difficult to consistently follow a routine due to lack of time as conventional exercise guidelines call for at least an hour of aerobic type activity five times a week. The commitment required for such training protocols are beyond the means of most living within the constraints of the very hectic realities of modern life. As many experts in the field have noted, in order for an exercise protocol to as well as a health benefit for the individual, not only should the regime reliably modify key disease risk factors, it must also be plausible to implement.

The Role Of Short High Intensity Training In Improving Insulin Action & Blood Sugar

You don't need to train for hours to improve your blood sugar response if you train at high intensity.

Brief high intensity training workouts have been demonstrated to produce improvements in aerobic function, but it was previously unknown whether high intensity training had the capacity to improve insulin action and hence glycemic control. An important study published in the journal BMC Endocrine Disorders however shows that such brief high intensity training may indeed have a pivotal role as a time saving exercise protocol for the prevention of diabetes. For the study 16 young men in their early twenties underwent a regime of 15 minute high intensity training for two weeks using stationary bicycles. Aerobic performance assessment as well as an oral glucose tolerance test to determine insulin response were administered both before and after the training periods. At the end of the two weeks of high intensity training researchers observed a significant increase in insulin action in addition to an increase in aerobic performance. Researchers concluded that “the efficacy of a high intensity exercise protocol, involving only ~250 kcal of work each week, to substantially improve insulin action in young sedentary subjects is remarkable…This novel time-efficient training paradigm can be used as a strategy to reduce metabolic risk factors in young and middle aged sedentary populations who otherwise would not adhere to time consuming traditional aerobic exercise regimes.”[9]

It’s Not How Long You Train- It’s How Hard You Train

Studies conducted at Arizona State University and Texas University not only confirm the increase in insulin action as a result of high intensity resistance training, but highlight two very important conclusions-

1. Higher intensity multiple set training protocols yielded the greatest treatment effect in improving both fasting glucose and insulin sensitivity.[10]
2. High volume resistance training is not a requirement for improved insulin sensitivity as a result of exercise as individuals performing high intensity low volume exercise have similar improvements in insulin sensitivity as those engaged in higher volume training programs. [11]

Taking this into consideration, a high intensity training protocol is one that many pressed for time should seriously consider. Not only have short intense workouts been demonstrated to improve insulin action but it has also been shown to increase muscle mass, increase endurance and aerobic capacity and decrease body fat better than aerobic exercise and conventional high volume training programs.[12,13,14,15,16,17,18] All the while increasing bone density, improving cardiovascular health and significantly reducing both the incidence and severity of depression.[19,20,21,22]

References: 

 1. Power of Prevention, American College of Endocrinology. Vol. 1, issue 1, January 2009. http://www.powerofprevention.com/POP_magazine_Jan2009_final.pdf/
2.  Jellinger, Paul S. “What You Need to Know about Prediabetes.” Power of Prevention, American College of Endocrinology. Vol. 1, issue 2, May 2009
 3. Wild S, Roglic G, Green A, Sicree R, King H (May 2004). “Global prevalence of diabetes: estimates for 2000 and projections for 2030″. Diabetes Care
 4. Gilba MJ. High-intensity Interval Training: A Time-efficient Strategy for Health Promotion. Current Sports Medicine Reports 2007
5. Babraj JA, Vollaard BJ, Keast C, Guppy FM, Cottrell G, Timmons JA. Extremely short duration high intensity interval training substantially improves insulin action in young healthy males- BMC Endocr Disord. 2009
6. Fontbonne A, Charles MA, Thibult N, Richard JL, Claude JR, Warnet JM, Rosselin GE, Eschwège E. Hyperinsulinaemia as a predictor of coronary heart disease mortality in a healthy population: the Paris Prospective Study, 15-year follow-up. Diabetologia. 1991
7. Barr EL, Zimmet PZ, Welborn TA, et al. (2007). “Risk of cardiovascular and all-cause mortality in individuals with diabetes mellitus, impaired fasting glucose, and impaired glucose tolerance: the Australian Diabetes, Obesity, and Lifestyle Study
8. C. A. Witczak1 and M. Sturek. Exercise prevents diabetes-induced impairment in superficial buffer barrier in porcine coronary smooth muscle. Journal of applied Physiology
 9. Pedersen BK, Saltin B: Evidence for prescribing exercise as therapy in chronic disease. Scand J Med Sci Sports 2006
 10. Black LE, Swan PD, Alvar BA. Effects of intensity and volume on insulin sensitivity during acute bouts of resistance training. J Strength Cond Res. 2010 Apr;24(4):1109-16.
 11. Reed ME, Ben-Ezra V, Biggerstaff KD, Nichols DL. The Effects of Two Bouts of High- and Low-Volume Resistance Exercise on Glucose Tolerance in Normoglycemic Women. J Strength Cond Res. 2011 Dec 8.
12. Hawley JA,  Specificity of training adaptation: time for a rethink? Physiol. 2008
13. Tremblay, A. et al. Impact of exercise intensity on body fatness and skeletal muscle metabolism. Physical Activities Sciences Laboratory, Laval University, Quebec, Canada Metabolism.1994; 43(7): 814-818.
14.  Tabata I, Nishimura K, Kouzaki M, Hirai Y, Ogita F, Miyachi M, Yamamoto K.-Med Sci Sports Exerc. 1996 Oct;28(10):1327-30.Effects of moderate-intensity endurance and high-intensity intermittent training on anaerobic capacity and VO2max.
15. Burgomaster KA, Howarth KR, Phillips SM, Rakobowchuk M, MacDonald MJ, McGee SL, Gibala M. Similar metabolic adaptations during exercise after low volume sprint interval and traditional endurance training in humans.  J Physiol 586: 151-160, 2008
16. Bahr R (1992). “Excess postexercise oxygen consumption–magnitude, mechanisms and practical implications”. Acta Physiologica Scandinavica. Supplementum 605
 17. Bahr R, Høstmark AT, Newsholme EA, Grønnerød O, Sejersted OM (September 1991). “Effect of exercise on recovery changes in plasma levels of FFA, glycerol, glucose and catecholamines”. Acta Physiologica Scandinavica 143
 18. Bielinski R, Schutz Y, Jéquier E (July 1985). “Energy metabolism during the postexercise recovery in man”. The American Journal of Clinical Nutrition 42
 19. High-intensity resistance training and postmenopausal bone loss: a meta-analysis.Martyn-St James M, Carroll S. Osteoporos Int. 2006
 20. Doyne EJ, Ossip-Klein DJ, Bowman ED, Osborn KM, McDougall-Wilson IB, Neimeyer IB. Running Versus Weight Lifting in the Treatment of Depression. Journal of Consulting and Clinical Psychology.
 21. Martinsen EW, Hoffart A, Solberg O. Comparing aerobic and non aerobic forms of exercise in the treatment of clinical depression: a randomized trial. Comprehensive Psychiatry
 22. Singh NA, Stavrinos TM, Scarbeck Y, Galambos G, Liber C, Singh MA. A randomized controlled trial of high versus low intensity weight training versus general practitioner care for clinical depression in older adults. Journal of Gerontology: Medical Sciences

Kevin Richardson is an award winning health and fitness writer, one of the most sought after personal trainers in New York City and creator of Naturally Intense High Intensity Training™. Get a copy of his free weight loss ebook here. If you live in the New York metropolitan area and need help losing weight or taking your body to the next level give Kevin and his team a call at 1-800-798-8420 or click here to get started with 50% off your trial personal training session.

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