Tag Archives: Robert Huizenga

Exercise Does and Doesn’t Help With Weight Loss

With regards to TV’s “The Biggest Loser” show:

The show’s 24-week regimen consists of approximately 4 hours of daily exercise, including 1 hour of intense resistance, 1 hour of intense aerobic activity, and 2 hours of moderate aerobic activity (for example, walking), along with a caloric  intake of at least 70% of estimated resting daily energy expenditure, explained Dr. [Robert] Huizenga, who is a former team physician to the L.A. Raiders football team.

exercise for weight loss and management, dumbbells

If you’re not familiar with resistance training, a personal trainer is an great idea

This is an excerpt from “The Biggest Loser Pushes Envelope on Diabetes,” in Internal Medicine News, vol. 45, No.11, page 17.

In a previous post about The Biggest Loser, I’d written that I didn’t know how much they exercised.

For purposes of discussion, let’s assume the documented major weight losses of Biggest Loser contestants is not simply due to caloric restriction.

Dr. Huizenga shared some of his experience at the recent annual meeting of the American Association of Clinical Endocrinologists.  In a study of 35 Biggest Loser participants, about half had prediabetes or type 2 diabetes.  Hemoglobin A1c, a measure of blood sugar control, fell significantly in this subset.  Three of the six with diabetes were able to stop metformin early on.  By week 29 of the study, average body mass index for the entire group had fallen from 46 to 29.

Yes, exercise helps with weight loss.  But most folks aren’t willing or able to exercise vigorously for four hours a day.  Physical activity is more important for maintenance of weight loss, when it demands much less time.

Steve Parker, M.D.

Small Study Shows Improved Diabetes and Prediabetes With Biggest Loser Plan

“One more rep then I’m outa here!”

Do you wonder how much exercise it takes to lose a lot of weight quickly?  Read on.

TV’s “The Biggest Loser” weight-loss program works great for overweight diabetics and prediabetics, according to an article May 30, 2012, in MedPage Today.  Some quotes:

For example, one man with a hemoglobin A1c (HbA1c) of 9.1 [poor control of diabetes], a body mass index (BMI) of 51 [very fat], and who needed six insulin injections a day as well as other multiple prescriptions was off all medication by week 3, said Robert Huizenga, MD, the medical advisor for the TV show.

In addition, the mean percentage of weight loss of the 35 contestants in the study was 3.7% at week 1, 14.3% at week 5, and 31.9% at week 24…

The exercise regimen for those appearing on “The Biggest Loser” comprised about 4 hours of daily exercise: 1 hour of intense resistance training, 1 hour of intense aerobics, and 2 hours of moderate aerobics.

Caloric intake was at least 70% of the estimated resting daily energy expenditure, Huizenga said.

At the end of the program, participants are told to exercise for 90 minutes a day for the rest of their lives. Huizenga said he is often told by those listening to him that a daily 90-minute exercise regimen is impossible because everyone has such busy lives.

“I have a job and I work out from 90 to 100 minutes per day,” he said. “It’s about setting priorities. Time is not the issue; priorities are the issue.”

Of the 35 participants in this study, six had diabetes and 12 had prediabetes.  This is a small pilot study, then.  I bet the results would be reproducible on a larger scale IF all conditions of the TV program are in place.  Of course, that’s not very realistic.  A chance to win $250,000 (USD) is strong motivation for lifestyle change.  Can you see yourself exercising for four hours a day?

Steve Parker, M.D.

PS: Although not mentioned in the article, these must have been type 2 diabetics, not type 1.