A study on macronutrient self-selection after acute aerobic exercise in college females.
Tae-Young Kim, Min-Jeong Kim, Ik-Rae Cho and 20 others
PMID 27799693WHAT IT FOUND
Fifteen healthy female college students reported lower calorie intake during a later 3-day period that included 1 hour of group climbing.
Total intake fell from 2,012.6 to 1,694.1 kcal; protein and carbohydrate fell, lipid did not.
Key findings
01Fifteen healthy female university students had lower total calorie intake after the exercise period: 1,694.1 kcal compared with 2,012.6 kcal before.
02Protein and carbohydrate intake decreased significantly after exercise, from 753.3 to 286.1 kcal and from 1,005.4 to 826.8 kcal, while lipid intake did not differ significantly.
03Total calorie consumption increased significantly after exercise, from 1,126.6 to 1,221.4 kcal.
STILL TO COME
How it was doneWhat they foundWhat it means for PTs
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What it does not show
Only 15 healthy female university students took part, so it does not show what happens in patients or other groups. There was no control group or randomisation, and the same participants were compared before and after the exercise period. Diet was recorded for only 3 days using questionnaires and photographs, which can miss what people actually ate. The study measured short-term calorie intake and consumption, not weight, body fat, or clinical outcomes. The conclusion says lipid intake decreased, but the results say lipid intake did not differ significantly.
The easy way to misread this
Do not conclude that aerobic exercise causes long-term weight loss or that all macronutrients decrease. Lipid intake did not differ significantly, and the study had 15 healthy college females, no control group, and only short-term food records.