The Claim

In overweight and obese individuals, a control group with no structured exercise intervention experienced a significant increase in body weight, body mass index, and total body fat over an 8-week period.

Source: Effect of high-intensity interval training vs. moderate-intensity continuous training on cardiometabolic risk factors in overweight and obese individuals

What the research says

Supports is higher

Support is ahead, but a single strong opposing study can change this.

Supports
38score
Challenges
0score

These are independent scores, not a percentage. Higher-grade studies count more, so a single strong opposing study can outweigh several weaker ones.

Description
1 study reviewed
In plain English

Overweight and obese people who did not follow any structured exercise program gained weight, increased their body mass index, and accumulated more body fat over eight weeks.

See the scientific wording

In overweight and obese individuals, a control group with no structured exercise intervention showed a significant increase in body weight, body mass index, and total body fat over 8 weeks.

Why this might work

When people do not exercise, their bodies burn fewer calories overall, so the energy from food is not used up and gets stored as fat. This causes weight gain, higher body mass index, and more body fat over time.

Verified mechanismbased on 1 study

What the research says

1 study
  1. Study: Effect of high-intensity interval training vs. moderate-intensity continuous training on cardiometabolic risk factors in overweight and obese individuals

    People who were overweight or obese and didn’t exercise for 8 weeks gained weight, their BMI went up, and they got more body fat — exactly what the claim says. The study measured this and found it happened for sure.

Score breakdown, mechanism chain, raw evidence, ideal studies needed & 1 supporting studies

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Not medical advice. For informational purposes only. Always consult a qualified healthcare professional before making health decisions.

Do overweight and obese people gain weight and fat without exercise over 8 weeks? | Scientific Fact Check | Fit Body Science