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Obesity

Obesity

The Body Mass Index (BMI) is a numerical value derived from a person's weight and height, used to categorize individuals into weight ranges. It is calculated using the formula: weight in kilograms divided by height in meters squared. Obesity is a health condition characterized by excessive accumulation of adipose tissue that poses health risks, often diagnosed with a BMI ≥ 30. This excess fat storage occurs when surplus dietary calories are converted into triglycerides and stored in...

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Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Visualization of Intensity Levels to Reduce the Gap Between Self-Reported and Directly Measured Physical Activity

Published on: March 7, 2019

The "fit but fat" paradigm addressed using accelerometer-determined physical activity data.

Paul Loprinzi¹, Ellen Smit², Hyo Lee³

¹Department of Exercise Science, Donna and Allan Lansing School of Nursing and Health Sciences, Bellarmine University, Louisville, Kentucky, Korea.

North American Journal of Medical Sciences

|August 1, 2014

Summary

Physical activity benefits health biomarkers across weight categories. Active overweight individuals show similar cardiovascular profiles to normal-weight inactive peers, challenging the "fit but fat" concept.

Keywords:

Accelerometry Biomarkers Fit but fat Obesity

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Area of Science:

Cardiovascular Health
Metabolic Health
Physical Activity Research

Background:

The
fit but fat
paradigm lacks investigation using objective accelerometry data.
Understanding the role of physical activity in overweight and obese individuals is crucial for public health.
Objective measurement of physical activity is essential for accurate health assessments.

Purpose of the Study:

To examine the association between accelerometer-determined physical activity and biomarkers in overweight or obese individuals.
To compare biomarker levels in active overweight/obese individuals versus inactive normal-weight individuals.
To investigate the
fit but fat
concept using objective physical activity data.

Main Methods:

Analysis of data from the 2003-2006 National Health and Nutrition Examination Survey (NHANES).
Inclusion of 5,146 participants aged 20-85 years.
Objective measurement of physical activity using accelerometry.

Main Results:

Active obese individuals exhibited more favorable waist circumference, C-reactive protein, white blood cells, and neutrophil levels than inactive obese individuals.
Similar positive associations were observed for active overweight individuals compared to inactive overweight individuals.
No significant biomarker differences were found between normal-weight inactive individuals and active overweight individuals, or between normal-weight inactive individuals and active obese individuals for several key markers.

Conclusions:

Physical activity confers protective effects on health biomarkers irrespective of body weight (normal, overweight, or obese).
Active individuals who are overweight (but not obese) demonstrate a cardiovascular profile comparable to that of inactive normal-weight individuals.
Objective physical activity assessment is vital for understanding health outcomes in diverse weight categories.