11:19pm Monday 21 October 2019

Exercise appetite stymies weight loss

The researcher, PhD candidate Katy Horner, won the “Three Minute Thesis” competition at QUT to present a study in a concise and compelling manner against other researchers at the university.

Ms Horner said there was a belief in the community that becoming more active automatically drove people to increase their appetite and energy intake, negating the effect of exercise for weight loss.

“Many factors influence appetite and how hungry or full we feel, including the rate at which food empties from our stomachs, known as gastric emptying,” Ms Horner said.

“When food fills the stomach it distends creating a sensation of fullness, and as food begins to empty into the intestine, hormones are released from the intestine to further reduce appetite.”

Ms Horner said her research would compare gastric emptying and appetite hormones in people of different activity levels and body compositions and follow changes in overweight people as they became more active and lost weight through supervised exercise.

“Findings from this thesis may have important implications both scientifically, to help better understand processes involved in appetite control, and practically, to inform better prescription of exercise for weight loss and maintenance in the treatment and prevention of obesity,” she said.

“Ultimately, no matter how much we exercise, we won’t lose weight if we take in more energy than we expend.”

In accordance with the Three Minute Thesis competition rules, Ms Horner captivated audiences with a presentation of her research using only a single static slide, within a three-minute deadline.

She won the right to represent QUT against researchers from more than 30 universities across Australia, New Zealand and the Pacific in a Brisbane competition this week, where she was successful in the semi-final round, but edged out in the grand final.

Media contact: Rachael Wilson, QUT media officer, 07 3138 1150 or rachael.wilson@qut.edu.au.
**High res image available for media use

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