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Related Concept Videos

Obesity01:24

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 adipocytes...

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A Method for Quantifying Upper Limb Performance in Daily Life Using Accelerometers
07:24

A Method for Quantifying Upper Limb Performance in Daily Life Using Accelerometers

Published on: April 21, 2017

Physical activity patterns using accelerometry in the National Weight Control Registry.

Victoria A Catenacci1, Gary K Grunwald, Jan P Ingebrigtsen

  • 1Center for Human Nutrition, University of Colorado Denver, Denver, Colorado, USA. vicki.catenacci@ucdenver.edu

Obesity (Silver Spring, Md.)
|October 30, 2010
PubMed
Summary
This summary is machine-generated.

Successful weight loss maintainers engage in more sustained physical activity. Objective assessments confirm that individuals in the National Weight Control Registry (NWCR) spend more time in moderate-to-vigorous physical activity (MVPA) bouts than control groups.

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Area of Science:

  • Obesity Research
  • Exercise Physiology
  • Behavioral Medicine

Background:

  • The National Weight Control Registry (NWCR) comprises individuals who have maintained significant weight loss.
  • NWCR participants consistently report high levels of physical activity.
  • Objective data on physical activity in weight-loss maintainers is needed for validation.

Purpose of the Study:

  • To objectively assess physical activity levels in NWCR subjects.
  • To compare physical activity in NWCR subjects with normal-weight and overweight control groups.
  • To investigate the role of sustained physical activity in weight management.

Main Methods:

  • NWCR participants (n=26) were compared to normal-weight (n=30) and overweight (n=34) controls.
  • Objective physical activity was measured over one week using triaxial accelerometers.
  • Sustained moderate-to-vigorous physical activity (MVPA) bouts (≥10 min) and non-bout MVPA (1-9 min) were analyzed.

Main Results:

  • NWCR subjects spent significantly more time in sustained MVPA bouts daily compared to overweight controls (41.5 vs. 19.2 min/day, P=0.004).
  • NWCR subjects showed a trend towards more sustained MVPA than normal-weight controls (25.8 min/day, P=0.080).
  • No significant differences were found in non-bout MVPA across the groups.

Conclusions:

  • Objective data supports the importance of physical activity for long-term weight loss maintenance.
  • Sustained volitional physical activity (≥10 min bouts) appears crucial for maintaining weight loss.
  • Interventions promoting structured exercise may enhance long-term weight management success.