How Diet and Exercise Affect Weight Loss and Fitness
Fat Loss Depends on Energy Deficit Only, Independently of the Method for Weight Loss
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Adding exercise didn’t increase fat loss, even though total energy deficit was larger in the exercise group.
Many assume that burning more calories through exercise leads to more weight loss, but here, both groups lost similar amounts despite different deficit compositions—challenging intuitive beliefs.
Practical Takeaways
If your goal is fat loss, focus on creating a calorie deficit—either through diet, exercise, or both.
Not medical advice. For informational purposes only. Always consult a healthcare professional. Terms
Surprising Findings
Adding exercise didn’t increase fat loss, even though total energy deficit was larger in the exercise group.
Many assume that burning more calories through exercise leads to more weight loss, but here, both groups lost similar amounts despite different deficit compositions—challenging intuitive beliefs.
Practical Takeaways
If your goal is fat loss, focus on creating a calorie deficit—either through diet, exercise, or both.
Publication
Journal
Annals of Nutrition and Metabolism
Year
2007
Authors
B. Strasser, A. Spreitzer, P. Haber
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Claims (4)
The more calories you burn compared to what you eat, the more fat you'll lose — it's like a math equation for your body.
For women who aren't very overweight, adding aerobic exercise to a calorie-restricted diet doesn't help them lose more fat than just eating less — as long as both groups burn the same total calories over 8 weeks.
For women who aren't severely obese, losing fat depends only on eating fewer calories — it doesn’t matter if you cut those calories through diet alone or by combining diet with cardio, as long as the total calorie drop is the same.
If women who aren't very overweight add aerobic exercise to a calorie-reduced diet, they get noticeably better at exercising — like being able to bike or walk harder — but just dieting alone doesn't help much with fitness.