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ASU fitness expert says new study underscores tricky nature of weight loss

ASU health professor explains why exercise may not make you lose weight.
September 6, 2017

The more you exercise, the more those pounds should just melt off, right?

Not always — this according to a recent exercise study out of the United Kingdom.

Conducted by scientists from Loughborough University in Britain, the study concludes that exercise as a weight-loss strategy is tricky, complex and not as relational as one might think.

To provide a deeper understanding of the nature of weight loss, ASU Now turned to Glenn A. Gaesser, an Arizona State University professor of exercise and health promotion in the College of Health Solutions.

Man in red tie
Glenn A. Gaesser

Question: A recently published by the Journal of Endocrinology shows that exercise isn’t always a foolproof weight-loss strategy in large part because exercise makes you hungrier and many people wind up consuming more calories than they normally would. What is your philosophy?

Answer: This was a short-term study, only looking at a few hours after exercise. The real issue is what happens long-term. Most studies show that weight loss from exercise training of any type is far less than what is expected on the basis of the cumulative calories burned during all exercise sessions combined.

This is because the human body tends to defend its “set-point” weight, much the same way a thermostat is designed to maintain a “set” temperature. This involves a number of physiological and hormonal responses that essentially prevent chronic exercise from reducing body weight to unhealthy levels. The same is true when people diet.

“Adaptive thermogenesis” prevents most people from losing weight and/or maintaining weight loss. Set-point is an individual thing, determined largely by genes but also environment. It also tends to increase with age.

Q: How do different types of exercise affect appetite?

A: This is a tough one. Higher-intensity exercise (think sprint-type interval exercise) typically suppresses appetite — at least initially. But the real issue is, as I mentioned earlier, what happens in the long term? Eventually, hunger comes back and we eat. That is why virtually every study that has been published on exercise training and weight loss shows minimal effects.  

Q: Are there any good non-exercise habits or methods that blunt appetite?

A: Good luck with that one. Trying to blunt appetite is essentially trying to battle biology, and biology inevitably wins. For individuals trying to lose some weight via exercise, I would suggest assessing progress fairly frequently with the scale and making adjustments accordingly.

We also published an article in the New York Times a couple of years ago showing that weight loss early on during an exercise program was also a significant predictor of weight (and fat) loss at the end of the exercise program. 

Q: I’ve heard that chocolate milk is the best thing to have after a workout. True or false?

A: Chocolate milk is fine — I love it. It’s got carbs and protein, but not necessarily the best. The overall 24-hour dietary intake is far more important than what you eat right after a workout.

 

Top photo courtesy of Pixabay 

 
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HEALab to offer entrepreneurial services to downtown, health-centric community

Health-centric entrepreneurs have a new resource in downtown Phoenix: HEALab.
September 6, 2017

Recently launched initiative to provide mentoring, workshops, physical space and more to ASU students and the public

Arizona State University has a reputation for innovation, so it’s no surprise that its schools are brimming with resources to support entrepreneurial and solutions-based endeavors.

There’s the Center for Entrepreneurship at the W. P. Carey School of Business for enterprising businesspeople, E+I at the Ira A. Fulton Schools of Engineering for aspiring rocket scientists and the New Media Innovation and Entrepreneurship Lab at the Walter Cronkite School of Journalism and Mass Communication for go-getting journalists.

But when it came to budding health-care professionals, there was a gap. Healthcare Innovation Program Director and Clinical Professor Rick Hall filled that gap Wednesday with the soft launch of HEALabHEALab stands for Health Entrepreneurship Accelerator Lab. on ASU’s Downtown Phoenix campusHEALab occupies the same space as Taylor Place Kitchen, on the south side of Taylor Place..

Hall pitched the idea of a health- and wellness-centric entrepreneurship lab six months ago to leaders at the College of Nursing and Health Innovation (CONHI) because, he said, “There was a little bit of a vacuum on the downtown campus for entrepreneurial activity. There are great colleges that have students with entrepreneurial aspirations, but we didn’t really have the resources that you see on some of the other campuses.”

There were times when Hall, who teaches entrepreneurial courses for CONHI, was approached by such students and had to refer them elsewhere.

“So now,” he said, “instead of sending students away to SkySong or somewhere else, we have our own lab on campus where we can encourage students to come in, work together to ideate solutions to problems related to health and take the next step, and help them work on things like business plans and marketing, things that they need to start up their solution.”

At Wednesday’s soft launch, Hall was working with dietetics undergraduate Erin Washbon on a business model for her diabetic meal-kit company, which she hopes will help recently diagnosed diabetics adjust to the lifestyle change by providing well-balanced meals along with educational information.

The way Hall and Washbon have approached the business plan — fluidly, by writing, erasing and rewriting lists under headers with labels like “resources,” “value proposition” and “costs” on a whiteboard instead of typing up a more traditional, fixed 10-page document — allows for flexible thinking and the ability to adapt as customers, markets and needs change.

It’s a brainstorming process Hall foresees all mentors and mentees at HEALab employing, followed by building a prototype and testing it out. Washbon, a junior, hopes to have a solid enough plan to pitch at one of the many ASU startup competitions before she graduates.

“There are so many invaluable resources at ASU, it would be silly not to take advantage of them,” she said.

And you don’t even have to be a student to do so.  

Drew Saenz, a former student of Hall’s who graduated in 2015 with a degree in exercise and wellness, started a successful company called Team Up that focuses on providing fitness training to special-needs kids. He’s looking to branch out into corporate wellness and visited HEALab on Wednesday to brainstorm with Hall on ways to do that.

Hall immediately introduced Saenz to Washbon and urged them to exchange contact information. It’s clear he relishes these kinds of moments, opportunities for like-minded individuals to connect, share and perhaps create something new.

“A year from now, they could have a business together,” Hall said.

There are a handful of other projects Hall has been working with that he hopes to bring into the fold at HEALab, including a fitness app that uses an avatar to show people how their body will change; a nonprofit that hopes to provide detox services to infants of opioid-addicted mothers; and a business that would provide insurance for preventative health rather than treatment.

As it evolves, HEALab plans to offer a monthly speaker series (beginning Oct. 11); weekly networking and idea-generation meetings; pitch competitions; mentoring and office hours; a space in which all that can happen; and more. And it’s all available to students, faculty, staff, alumni and the general public. 

“That’s really unique and smart because if we’re helping the community, it just helps us, and it helps with ASU’s mission of social embeddedness in the downtown area,” Hall said.

HEALab will also provide services to participants of Prepped, a free six-week program offered by ASU’s Office of Entrepreneurship and Innovation that began last year as a way to support entrepreneurs from underserved communities start food businesses.

The official grand opening of HEALab will be in October, but Hall encourages anyone interested in what it has to offer to stop by and check it out on the ground floor of Taylor Place, a residence hall on the Downtown Phoenix campus.

“Our goal,” said Hall, “is to connect the dots between these enormous opportunities for innovation and the resources to make them happen.”

For more information about HEALab, visit its webpage at nursingandhealth.asu.edu/healab.

 

Top photo: Erin Washbon meets with the director of the HEALab, Rick Hall, at Wednesday's soft launch of the entrepreneurial space. The startup incubator is geared toward health and wellness students on the Downtown Phoenix campus but is open to students of any major, as well as faculty, staff, alumni and the general public. Photo by Anya Magnuson/ASU Now