Peer-reviewed study
The energy gap still matters
Calorie restriction or exercise: effects on coronary heart disease risk factors. A randomized, controlled trial
Source details
PubMed-linked citation target.
- Authors
- Fontana et al.
- Journal
- American Journal of Physiology-Endocrinology and Metabolism. 2007.
- Identifiers
- PMID 17389710 · DOI 10.1152/ajpendo.00102.2007
Claim guardrail
What this page should prevent.
Use this for energy-balance context, not as a claim that exercise and diet are interchangeable for every person or goal.
Geebs coaching takeaway
The study only matters if it changes a behavior.
Cardio can create part of the energy gap, but it does not override the need for a stable nutrition setup.
Content angles
Safe ways to translate it.
Cardio is a lever, not the law
The deficit still has to exist
Do not out-cardio a broken diet
Exact answer pages
Questions that cite this source.
Cardio dose answer
How much cardio do you need for fat loss?
Cardio can help fat loss, but it is a lever inside the larger plan, not the whole plan. The useful dose is enough movement to support the calorie target and health without making lifting, hunger, joints, or recovery worse.
Fat loss and muscle answer
How do you lose fat without losing muscle?
The muscle-protecting version of fat loss is not a crash diet. It is a controlled deficit, hard resistance training, enough protein, and cardio placed so it supports the plan without stealing recovery from the lifts.
HIIT and steady cardio answer
Is HIIT better than steady cardio for fat loss?
HIIT is not automatically better than steady cardio for fat loss. If calorie burn is similar, body-composition changes can be similar too. The better choice is the one you recover from, repeat, and can place without hurting lifting performance.
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