Participants Needed for Exercise and Appetite Study

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Participants Needed for Exercise and Appetite Study

Energy Metabolism Research Laboratory Wilfrid Laurier University

Appetite is becoming more and more popular in scientific research, especially given the growing rates of obesity. There are many factors that influence appetite, such as the environment, state of mind, and physical make-up. In Greg's research at Wilfrid Laurier University’s Energy Metabolism Research Laboratory, he focusses on the biological control of appetite and how different hormones in the bloodstream signal to the brain that you are hungry or full.

There are two different classes of appetite hormones: (1) those that increase in the bloodstream during hunger to make you want to eat, and (2) those that increase following a meal to make you feel full. This relationship takes place in a tiny area of the brain known as the hypothalamus.

Participants Needed for Exercise and Appetite Study

Many researchers, including Greg, have shown that the release of these hormones can be changed by exercise, with more intense exercise making you feel less hungry (e.g., more hormones to suppress appetite are in the bloodstream). This idea suggests that appetite could be controlled with regular exercise at higher intensities. More importantly this could make it easier for weight management. Consuming extra calories results in weight gain over time. However, if we can suppress appetite through exercise and consume fewer calories throughout the day, then weight loss might be easier.

The problem; however, is that this appetite-exercise relationship is not well understood in individuals who are already obese. Greg am currently studying the effects of exercise on appetite regulation in obese males aged 18-35 and seeking participants for this investigation.

Participants Needed for Exercise and Appetite Study

Greg's study requires 3 visits to our laboratory (located at WLU) over the course of 3 weeks for a total time commitment of 12.5 hours. In appreciation for the time commitment in this study, all participants will receive $50.00.

During the orientation session (~2 hours) you will be asked to answer some general health questions and read/sign a consent form. Following this, you will do an exercise test to find your current level of physical fitness. During one of the experimental sessions, you will eat breakfast (provided during the session), you will cycle on a stationary bicycle for 60 minutes, and at 5 specific time points a registered nurse will draw blood from your forearm vein. The second experimental session will be identical to the first, however, there will be no exercise. In this second session you eat breakfast, and blood samples will be obtained but you simply rest in the laboratory for the duration of the session. Both experimental sessions start at 8:00am and end at 1:00pm.

If you are interested in participating or would like to know more, contact Greg McKie at mcki1060@mylaurier.ca

Participants Needed for Exercise and Appetite Study