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Self-discrepancy theory explains how people compare their actual self to their ideal and ought selves and how mismatches between these self-guides can lead to emotional distress. Developed by E. Tory Higgins, the theory distinguishes among three components of self-concept: the actual self, the ideal self, and the ought self. These refer respectively to how individuals perceive themselves, how they aspire to be, and how they believe they are obligated to be. Emotional well-being, self-esteem,...
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Assessment of Child Anthropometry in a Large Epidemiologic Study
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Does Self-Perception Equal the Truth When Judging Own Body Weight and Height?

Lene A H Haakstad1, Trine Stensrud1, Christina Gjestvang1

  • 1Department of Sports Medicine, Norwegian School of Sports Sciences, 0806 Oslo, Norway.

International Journal of Environmental Research and Public Health
|August 27, 2021
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Summary

Novice exercisers accurately self-report body weight and height, with Body Mass Index (BMI) calculations being valid. However, many underestimate their weight status, failing to recognize overweight or obesity.

Keywords:
body mass indexbody weightnovice exercisersself-classified weight groupvalidation

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Area of Science:

  • Public Health
  • Exercise Science
  • Anthropometry

Background:

  • Fitness clubs offer opportunities to assess public health metrics.
  • Accurate self-perception of weight status is crucial for health behavior change.
  • Novice exercisers' perception of weight categories needs examination.

Purpose of the Study:

  • To evaluate the accuracy of self-reported body weight, height, and Body Mass Index (BMI) against measured data.
  • To investigate how accurately novice exercisers classify their weight status.
  • To compare self-perception accuracy with fitness club attendance.

Main Methods:

  • Online questionnaires collected self-reported weight, height, and weight status.
  • Anthropometric measurements were taken at fitness club registration.
  • Statistical analyses included paired t-tests, Bland-Altman plots, and chi-squared tests.

Main Results:

  • Self-reported and measured data for weight, height, and BMI showed reasonable accuracy.
  • A significant proportion of participants underreported or overreported their weight.
  • Over half of overweight men and a majority of obese individuals misclassified their weight status.

Conclusions:

  • Self-reported body weight, height, and BMI are valid measures in novice exercisers.
  • A substantial number of individuals fail to recognize their overweight or obesity, potentially hindering public health interventions.
  • Understanding weight perception is key to reaching at-risk populations.