Longitudinal impact of weight misperception and intent to change weight on body mass index of adolescents and young adults with overweight or obesity

Diana Rancourt, Idia Thurston, Kendrin R. Sonneville, Carly E. Milliren, Tracy K. Richmond

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Objective Accurate perception of one's weight status is believed to be necessary to motivate weight loss intention and subsequent weight loss among those with overweight/obesity. This proposed pathway, however, is understudied in longitudinal research. This study examined the indirect effect of weight change intention on the relationship between weight status perception and BMI change among adolescents with overweight/obesity. Methods Participants included 2664 adolescents with overweight/obesity (52% female) from the National Longitudinal Study of Adolescent Health. Longitudinal associations between Wave II weight status perception (accurate versus misperception) and intent to change weight (i.e., gain, lose, stay the same) on BMI change (Wave II–Wave IV) were examined using multiple linear regression. Indirect effects of weight change intention were investigated using the Monte Carlo method. Analyses were stratified by gender. Results Accurate perceivers (81.0% female; 60.1% male) were more likely than misperceivers (i.e., perception of “about the right weight”) to report weight loss intention (p < 0.001). Among females, weight status misperception and weight loss intention individually were associated with smaller (β = − 1.37, 95% CI [− 2.64, − 0.10]) and greater (β = 1.18, 95% CI [0.11, 2.25]) BMI gains, respectively. Among males, fully adjusted models suggested that weight status misperception was associated with significantly smaller gains in BMI over time (β = − 1.51, 95% CI [− 2.38, − 0.63]). Weight change intention did not emerge as an indirect effect for either gender. Conclusions Although weight status misperception was protective against weight gain, weight change intention did not provide an explanation for this relationship.

Original languageEnglish (US)
Pages (from-to)7-13
Number of pages7
JournalEating Behaviors
Volume27
DOIs
StatePublished - Dec 1 2017
Externally publishedYes

Fingerprint

Young Adult
Body Mass Index
Obesity
Weights and Measures
Weight Perception
Weight Loss
Weight Gain
National Longitudinal Study of Adolescent Health
Monte Carlo Method
Linear Models
Research

All Science Journal Classification (ASJC) codes

  • Clinical Psychology
  • Psychiatry and Mental health

Cite this

Longitudinal impact of weight misperception and intent to change weight on body mass index of adolescents and young adults with overweight or obesity. / Rancourt, Diana; Thurston, Idia; Sonneville, Kendrin R.; Milliren, Carly E.; Richmond, Tracy K.

In: Eating Behaviors, Vol. 27, 01.12.2017, p. 7-13.

Research output: Contribution to journalArticle

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abstract = "Objective Accurate perception of one's weight status is believed to be necessary to motivate weight loss intention and subsequent weight loss among those with overweight/obesity. This proposed pathway, however, is understudied in longitudinal research. This study examined the indirect effect of weight change intention on the relationship between weight status perception and BMI change among adolescents with overweight/obesity. Methods Participants included 2664 adolescents with overweight/obesity (52{\%} female) from the National Longitudinal Study of Adolescent Health. Longitudinal associations between Wave II weight status perception (accurate versus misperception) and intent to change weight (i.e., gain, lose, stay the same) on BMI change (Wave II–Wave IV) were examined using multiple linear regression. Indirect effects of weight change intention were investigated using the Monte Carlo method. Analyses were stratified by gender. Results Accurate perceivers (81.0{\%} female; 60.1{\%} male) were more likely than misperceivers (i.e., perception of “about the right weight”) to report weight loss intention (p < 0.001). Among females, weight status misperception and weight loss intention individually were associated with smaller (β = − 1.37, 95{\%} CI [− 2.64, − 0.10]) and greater (β = 1.18, 95{\%} CI [0.11, 2.25]) BMI gains, respectively. Among males, fully adjusted models suggested that weight status misperception was associated with significantly smaller gains in BMI over time (β = − 1.51, 95{\%} CI [− 2.38, − 0.63]). Weight change intention did not emerge as an indirect effect for either gender. Conclusions Although weight status misperception was protective against weight gain, weight change intention did not provide an explanation for this relationship.",
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