Swimming makes you hungrier and likely to eat more at the next meal – new research
People often believe that exercise can make you hungrier, so they may therefore eat more during subsequent meals. But for the typical person, single sessions of land-based moderate to high-intensity exercise (such as running, resistance exercise and intermittent sprint cycling) have been shown to temporarily decrease appetite and do not commonly lead to increased food intake on the same day.
But across the 15 years that our group has been researching exercise and its effects on appetite, one particular question that we are often asked is “why does swimming make you hungry?” To date, this anecdotal question has not been tested in a rigorously designed experimental study. We therefore decided to compare the effects of swimming versus cycling and rest (control). We found that appetite and food intake were increased after swimming in both males and females.
We recruited 32 healthy adults under the age of 40 years (17 men and 15 women) who were able to swim and cycle at a recreational – rather than elite – level. None of the participants were obese. And because the menstrual cycle can influence appetite, we made sure female participants exercised during the same part of their cycle each month and were not pregnant. The participants completed all three trials (swimming, cycling, or resting) in a random order, separated by at least four days – so the effects of the prior trial no longer remained.
Participants were provided with a set breakfast (strawberry jam sandwich, croissant and orange juice) which they ate at home between 8:45 am and 9:00 am. Once they arrived at the laboratory, we measured their appetite using a scale at multiple times throughout the day. The participants rested throughout all three trials, except when performing 60 minutes of cycling or swimming in the exercise trials. The exercise sessions began 90 minutes after breakfast.
To read the full article, Alice Thackray, James King, David Stensel, of Loughborough University and David Broom, of Coventry University, visit the Conversation…
Notes for editors
Press release reference number: 20/106
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